10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2011

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 1-10239

PLUM CREEK TIMBER COMPANY, INC.

(Exact name of registrant as specified in its charter)

Organized in the State of Delaware I.R.S. Employer Identification No. 91-1912863

999 Third Avenue, Suite 4300

Seattle, Washington 98104-4096

Telephone: (206) 467-3600

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of exchange on which registered
Common Stock, par value $0.01 per share	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:    None

Indicate by a check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x No  o

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  o    No  x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes  x     No  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes  x     No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S–K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10–K or any amendment to this Form 10–K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  x         Accelerated filer    o        Non-accelerated filer  o        Smaller reporting company  o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes  o    No   x

The aggregate market value of the voting common stock held by non-affiliates based on the closing sales price on June 30, 2011, was $6,543,356,610. For this calculation, all executive officers, directors and stockholders owning more than 5% of the outstanding common stock have been deemed affiliates. Such determination should not be deemed an admission that such executive officers, directors and stockholders are, in fact, affiliates of the registrant.

The number of outstanding shares of the registrant’s common stock, as of February 15, 2012 was 161,406,910.

DOCUMENTS INCORPORATED BY REFERENCE

List hereunder the following documents if incorporated by reference and the Part of the Form 10–K (e.g., Part I, Part II, etc.) into which the document is incorporated:

Portions of the Proxy Statement for registrant’s 2012 Annual Meeting of Shareholders to be held on May 8, 2012, are incorporated by reference into Part III of this Annual Report on Form 10-K.

PLUM CREEK TIMBER COMPANY, INC.

ANNUAL REPORT ON FORM 10-K

For the Fiscal Year Ended December 31, 2011

TABLE OF CONTENTS

Part I.
Item 1.	Business	1
Item 1A.	Risk Factors	12
Item 1B.	Unresolved Staff Comments	17
Item 2.	Properties	18
Item 3.	Legal Proceedings	18
Item 4.	Mine Safety Disclosures	18
Part II.
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	21
Item 6.	Selected Financial Data	24
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	54
Item 8.	Financial Statements and Supplementary Data	56
	Plum Creek Timber Company, Inc.	56
	Plum Creek Timberlands, L.P.	101
Item 9.	Changes in and Disagreements With Accountants on Accounting and Financial Disclosure	142
Item 9A.	Controls and Procedures	142
Item 9B.	Other Information	142
Part III.
Item 10.	Directors, Executive Officers and Corporate Governance	143
Item 11.	Executive Compensation	143
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	143
Item 13.	Certain Relationships and Related Transactions, and Director Independence	143
Item 14.	Principal Accounting Fees and Services	143
Part IV.
Item 15.	Exhibits, Financial Statement Schedules	144
Index to Exhibits		145

Table of Contents PART I / ITEM 1

Part I

When we refer to “Plum Creek,” “the company,” “we,” “us,” or “our,” we mean Plum Creek Timber Company, Inc. and its consolidated subsidiaries. References in Items 1 through 7 to Notes to Consolidated Financial Statements refer to the Notes to the Consolidated Financial Statements of Plum Creek Timber Company, Inc. included in Item 8 of this form.

ITEM 1. BUSINESS

Industry Overview

General

The timber industry possesses several unique characteristics that distinguish it from the broader paper and forest products industry. The timber industry, which consists primarily of timberland owners, provides raw material and conducts resource management activities for the paper and forest products industry, including the planting, fertilizing, thinning, and harvesting of trees and the marketing of logs. Logs are marketed and sold either as sawlogs to lumber and other wood products manufacturers or as pulplogs to pulp and paper manufacturers or producers of oriented strand board (“OSB”). Also, over time, timberlands may become more valuable for purposes other than growing timber. In these circumstances, timberlands may be sold to realize these values.

We believe timber is an attractive asset class for many reasons, including the following:

Renewable Resource. Timber is a growing and renewable resource that, when properly managed, increases in volume and value as it grows over time. Larger diameter trees command a higher price than smaller trees because they may be converted to higher value end-use products such as lumber and plywood.

Predictable and Improving Growth Rates. Predictable biological growth is an attractive feature of timberland assets because it contributes to predictable, long-term harvest planning. The development and application of intensive forest management practices continue to improve biological growth rates.

Harvest Flexibility. Timberland owners have some flexibility to increase their harvests when prices are high and decrease their harvests when prices are low, allowing timberland owners to maximize the long-term value of their growing resource base.

Supply and Demand Dynamics

There are six primary end-markets for most of the timber harvested in the United States: products used in new housing construction; products used in the repair and remodeling of existing housing; products for industrial uses; raw material for the manufacture of pulp and paper and OSB; wood fiber for energy production; and logs for export.

Supply. Timber supply can fluctuate based upon a variety of factors. The supply of timber is limited, to some extent, by the availability of timberlands. The availability of timberlands, in turn, is limited by several factors, including government restrictions relating to environmental regulation and land use and alternate uses such as agriculture. The large amounts of capital and length of time required to create new timberlands also limits timber supply.

Over the long-term, timber supply increases when modern forestry techniques increase productivity of timberlands and when some marginal agriculture lands revert to timberlands or are planted as forests for conservation purposes. In certain regional markets, log supply can expand when log imports increase relative to log exports.

Demand. The demand for timber is directly related to the underlying demand for pulp and paper products, lumber, panel and other wood related products. The demand for pulp and paper is largely driven by general macroeconomic conditions, including population growth, per-capita income levels, and industry capacity. The demand for lumber and manufactured wood products is affected primarily by the level of new residential construction activity, repair and remodeling activity and industrial demand, which, in turn, is impacted by changes in general economic and demographic factors, including population, interest rates for home mortgages and construction loans. The demand for United States

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timber is also impacted by the amounts of pulp and paper products, lumber, panel and other wood products that are imported into the United States. Significant factors determining the volume of products shipped into the United States by foreign producers are currency valuation shifts as well as tariffs and quotas. Demand for lumber and logs and the volume of products that are shipped from the United States (exports) are also impacted by macroeconomic conditions in foreign markets, primarily China, Canada, Japan and Mexico. In addition to these historically significant factors, the demand for timber may also be affected by emerging markets for wood-based biofuel and bioenergy.

Our Business

We are the largest private timberland owner in the United States. As of December 31, 2011, we owned 6.6 million acres of timberlands located in 19 states. Our objective is to maximize the long-term value of these assets. We analyze each timberland acre comprehensively to understand its highest-valued use. We realize these values in many different ways, including harvesting the trees, selling the timberland or converting our trees to lumber, plywood and other wood products.

Our timberlands are well diversified, not only geographically, but also by species mix and age distribution. Growth rates vary depending on species, location, age and forestry practices. We manage our timberlands in two business segments: the Northern Resources Segment, consisting of timberlands in Maine, Michigan, Montana, New Hampshire, Oregon, Vermont, Washington, West Virginia and Wisconsin; and the Southern Resources Segment, consisting of timberlands in Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina and Texas. In addition, our Other Segment includes our natural resource businesses that focus on opportunities for oil and natural gas production, mineral extraction, wind power and communication and transportation rights of way. The Real Estate Segment comprises our sales of higher and better use timberlands (some of which are sold through our wholly-owned taxable REIT subsidiaries), and sales of non-strategic timberlands, including sales of large blocks of timberlands. Our Real Estate Segment includes development of certain properties, internally and through a third party joint venture.

Our Manufactured Products Segment, also conducted through our wholly-owned taxable REIT subsidiaries, includes two lumber mills (of which one mill is curtailed until markets improve), two plywood mills, two medium density fiberboard (“MDF”) production lines, one lumber remanufacturing facility in Idaho and one lumber remanufacturing facility in Montana (which is curtailed until markets improve). The Montana facilities, strategically located near our timberlands, convert logs to lumber, plywood and other wood products, and convert chips, sawdust and wood shavings to MDF.

Our Strategies for Growing Asset Value

Our strategies for growing asset value are guided by our disciplined focus to maximize the long-term value of our assets across our geographically diverse ownership. We seek to maximize the long-term value by managing our 6.6 million acres with the ultimate best use in mind. We strive to optimize our resource base through intensive resource management, disciplined acquisitions and dispositions and practicing environmentally responsible resource management.

Intensive Resource Management. We grow the value of our core timber business through intensive management of our timberlands.We view our core timber resource base as a renewable asset with substantial inherent value. We seek to manage our timberlands in a manner that optimizes the balance among current cash flows, the biological growth of our timber and prudent environmental management. Our management approach employs advanced forest management practices, including the use of a computerized timber inventory system, thinning and fertilization, and selective breeding to produce superior seedlings. Tree growth rates vary by region because of differences in weather, climate and soil conditions. Newly-planted seedlings take 20 to 30 years to reach harvest maturity in the Southern United States, 35 to 60 years in the Northwestern United States, 45 to 70 years in the Northeastern United States and 70 to 90 years in inland regions of the Western United States, depending on the desired product. Our goal is to harvest trees at their optimal economic value. We merchandise the tree to get the most value from each log segment, while meeting customer specifications.

Furthermore, as part of our resources business, we focus on realizing the maximum value for non-timber resources on our properties, including opportunities relating to mineral extraction. Our strategy involves forming alliances with industry leaders to identify and pursue such opportunities.

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Disciplined Acquisitions and Dispositions. We estimate that included in the company’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands that we expect to sell, exchange, and/or develop over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. In addition, the company identified approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller acreage transactions over the near and medium term. In the meantime, all of our timberlands will continue to be managed productively in our business of growing and selling timber. Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries.

We may sell or exchange timberlands that have high environmental or other public values and reinvest in timberlands that are more suitable for commercial timber management. In addition, we may sell conservation easements that limit development rights, but ensure that the timberlands will be maintained as a working forest in perpetuity. We may also sell or exchange timberlands that are less strategic to the company to other forest products companies or non-industrial investors.

Our disciplined acquisition and disposition strategy has allowed us to expand and diversify our timberland holdings. In 1989, our timber holdings were 1.4 million acres compared to 6.6 million acres at December 31, 2011. This growth through acquisitions has enhanced our operating flexibility and reduced our exposure to regional timber market fluctuations. We expect that any future acquisitions of timberland would be in or near one or more of the timber producing areas of the United States, including, but not limited to, in or near states in which we currently own timberlands.

The table below summarizes acquisitions and dispositions by Plum Creek:

(dollars in millions)	2011  (A)		2010 (B)		2009 (C)
Acquisitions
Purchase Price	$	101	$	—	$	—
Acres	59,000		—		—
Dispositions
Acres	185,000		258,000		297,000

^(A)  Acquired timberlands consist primarily of 50,000 acres located in Alabama and Georgia. Dispositions included 45,000 acres located in the Northern Resources Segment and 140,000 acres in the Southern Resources Segment.

^(B)  There were no significant timberland acquisitions in 2010. Dispositions included 142,000 acres located in the Northern Resources Segment and 116,000 acres in the Southern Resources Segment.

^(C)  There were no significant timberland acquisitions in 2009. Dispositions included 248,000 acres located in the Northern Resources Segment and 49,000 acres in the Southern Resources Segment.

Environmentally Responsible Resource Management. We believe that environmentally sound management practices contribute to our growth in value by providing greater predictability in the management of our assets. We follow the principles of the Sustainable Forestry Initiative^® program (“SFI^SM”) which are aimed at the sound management of all natural resources, including soils, air, watersheds, fisheries and wildlife habitats. These principles are reflected in our habitat planning efforts. We currently have three major conservation agreements under which we manage approximately 1.2 million acres of our timberlands. Our forestry practices on all of our timberlands have been independently audited and certified under the SFI^SM program. Our manufacturing business follows a set of internally developed environmental principles. See “Federal and State Regulations” below.

Segment Information

Certain financial information for each business segment is included in Note 19 of the Notes to Consolidated Financial Statements and is incorporated herein by reference.

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Northern Resources Segment

As of December 31, 2011, the Northern Resources Segment encompassed approximately 3.3 million acres of timberlands in Maine, Michigan, Montana, New Hampshire, Oregon, Vermont, Washington, West Virginia and Wisconsin, and contained an estimated 108 million tons of standing timber. Consistent with industry practices in the North, Plum Creek’s estimated inventory of standing timber includes deductions for visible and hidden defect. Furthermore, Plum Creek’s estimated inventory includes volumes in environmentally sensitive areas, where we defer harvest until conditions permit the removal of trees without adversely affecting the environment.

Timber harvested in the Northern Resources Segment is sold predominately as delivered logs to domestic mills and, in Montana, is also used in our manufacturing facilities. Competitors in the domestic log market include the United States Forest Service, the Bureau of Land Management, the Bureau of Indian Affairs, the British Columbia Ministry of

Forests, and numerous private individuals, domestic and foreign industrial timberland owners, and state agencies located in the regions in which we operate. In the Northern Resources Segment, domestic wood and fiber consuming facilities tend to purchase raw materials within a 200-mile radius due to transportation costs. Competitive factors within a market area generally will include price, species, grade, quality, proximity to wood consuming facilities and the ability to consistently meet customer requirements. We compete based on price, on our reputation as a stable and consistent supplier of well-merchandised, high-quality logs, on our status as a Sustainable Forestry Initiative^® certified supplier, and on our ability to maintain qualified independent logging and hauling contractors.

The Northern Resources Segment has several log supply agreements. In general, the agreements require us to supply a specified volume of timber to certain manufacturing facilities in the U.S. We had the following supply agreements in the Northern Resources Segment as of December 31, 2011:

Company	Location	Product Type	Price	Expiration Date
Verso Paper Corp. (A)	Maine	Pulpwood	Market Prices	December 31, 2013
Moose River Company, Inc. (B)	Maine	Sawlogs	Market Prices	June 30, 2013
Escanaba Paper Company (B)	Michigan	Pulpwood	Market Prices	December 31, 2016
Swanson Group, Inc. (C)	Oregon	Sawlogs	Market Prices	November 15, 2021
Sappi, Ltd.(D)	Maine	Pulpwood	Market Prices	November 30, 2023

(A)May be mutually extended for two years.

(B)May be mutually extended for three years.

(C)May be mutually extended for five years.

(D)May be extended for fifteen years at the option of Sappi, Ltd.

During 2011, approximately 37% of the timber harvested in our Northern Resources Segment was sold pursuant to a supply agreement. We expect this percentage to be approximately 33% during 2012. The volume commitments under these supply agreements may restrict our ability to sell timberlands in certain areas within our Northern Resources Segment, but also provide us stable demand.

Southern Resources Segment

As of December 31, 2011, the Southern Resources Segment consisted of approximately 3.3 million acres of timberlands (including approximately 221,000 acres of leased land) located in the states of Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina and Texas, and contained an estimated 145 million tons of standing timber. Consistent with industry practices in the South, Plum Creek’s estimated inventory of standing timber includes deductions for visible defect. Furthermore, Plum Creek’s estimated inventory includes volume in environmentally sensitive areas, where we defer harvest until conditions permit the removal of trees without adversely affecting the environment.

Logs in the Southern Resources Segment are sold to third party mills producing a wide array of forest products,

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including manufacturers of lumber, plywood, OSB, and pulp and paper products. We compete with numerous private and industrial timberland owners as well as federal and state agencies across the Southern United States. Due to transportation costs, domestic wood and fiber consuming facilities in the Southern Resources Segment tend to purchase raw material within a 100-mile radius. Competitive factors within our Southern Resources Segment include price, species, grade, quality, proximity to wood consuming facilities and the ability to consistently meet customer requirements. We compete based on our reputation as a stable and consistent supplier of well-merchandised, high-quality logs, on price, on our status as a Sustainable Forestry Initiative^® certified supplier, and on our ability to maintain qualified independent logging and hauling contractors. The Southern Resources Segment has a single customer, with multiple facilities, that represents 21% of its revenues. While not expected, the loss of this customer (all facilities) could have a significant impact on its operating income. The customer purchases sawlogs and pulpwood for facilities located across the Southern Resources Segment. These facilities produce lumber, plywood, OSB and pulp and paper products. The loss of an individual facility would not likely have a significant impact on operating income.

The Southern Resources Segment has several log supply agreements. In general, the agreements require us to supply a specific volume of timber to certain manufacturing facilities in the U.S. We had the following supply agreements in the Southern Resources Segment as of December 31, 2011:

Company	Location	Product Type	Price	Expiration Date
Evergreen Packaging	Arkansas	Pulpwood	Market Prices	December 31, 2012
Rock-Tenn Corp.	Louisiana	Pulpwood	Market Prices	September 30, 2014
Newport Timber LLC	Georgia	Pulpwood	Market Prices	December 31, 2014
West Fraser South, Inc. (A)	Arkansas and Louisiana	Sawlogs	Market Prices	December 31, 2015
Graphic Packaging Corp. (B)	Louisiana	Pulpwood	Market Prices	August 6, 2016

^(A)  May be renewed for five-year periods upon mutual consent of both parties.

^(B)  May be extended up to an additional ten years by either party.

During 2011, approximately 21% of the timber harvested in our Southern Resources Segment was sold pursuant to a supply agreement. We expect this percentage to be approximately 20% during 2012. The volume commitments under these supply agreements may restrict our ability to sell timberlands in certain areas within our Southern Resources Segment, but also provide us stable demand.

Real Estate Segment

In our Real Estate Segment, we compete with numerous sellers of entitled and unentitled land in hundreds of local markets. Buyers of our timberlands range from individuals purchasing small parcels to large investors looking to own and/or manage large blocks of commercial timberlands. Until a parcel of land is sold, all of our timberlands are managed productively in our business of growing and selling timber. Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries.

The timing of real estate sales is a function of many factors, including the general state of the economy, demand in local real estate markets, the ability of buyers to obtain financing, the ability to obtain entitlements, the number of competing properties listed for sale, the seasonal nature of sales (particularly in the northern states), the plans of adjacent landowners, our expectation of future price appreciation, the timing of harvesting activities, and the availability of government and not-for-profit funding (especially for conservation sales). Also, in any period the price per acre will vary based on the location and physical characteristics of the parcels sold.

Higher Value Timberlands. We review our timberlands to identify properties that may have higher values other than as commercial timberlands. Included in our 6.6 million acres are approximately 900,000 acres of higher value timberlands that we expect to sell, exchange, and/or develop over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential.

The 100,000 acres identified as having development potential are expected to be developed internally or through third-

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party arrangements over the next fifteen to twenty years. Projects developed internally by the company will generally be low-intensity development limited to activities associated with obtaining entitlements. For larger and more complicated projects, it is our intent to sell to, or enter into third-party joint venture arrangements, with leading land developers. As a result of the current weak housing environment, we expect that the development of many of these properties will be delayed.

Non-Strategic Timberlands. We will, from time to time, make other opportunistic sales of our timberlands. These transactions may involve selling timberlands located in areas where we would like to reduce our market presence, timberlands with lower than average productivity characteristics, or timberlands that can be sold at a price exceeding our value of holding and operating as commercial timberland. We consider these timberlands non-strategic and may sell them in either large or small acreage transactions.

We have approximately 300,000 acres of non-strategic timberlands, which we expect to sell in smaller acreage transactions over the near and medium term (“small non-strategic”). In addition to these 300,000 acres, we may make sales of non-strategic timberlands in larger acreage transactions to commercial timberland buyers as opportunities arise (“large non-strategic”). Examples of such large acreage sales in the recent past include the 30,000 acres we sold in Mississippi for $43 million and the 18,000 acres we sold in Oregon for $60 million in 2011 and the 24,000 acres we sold in Louisiana for $32 million in 2010.

Manufactured Products Segment

Lumber. We produce a diverse line of softwood lumber products, including common, select and edge-glued boards, studs and finger-jointed studs. Lumber products manufactured in our Montana pine board sawmill and remanufacturing facility in Idaho are targeted to domestic lumber retailers, such as retail home centers for use in repair and remodeling projects. Lumber products from our Montana studmill and finger-joint stud remanufacturing plant are targeted to contractor distribution yards for use in home construction. Both pine board and stud lumber products are also sold to stocking distributors who serve a wide variety of end uses. In June 2009, we curtailed both the studmill and the finger-joint stud remanufacturing plant, but maintain both of these facilities in a state of readiness to resume production when lumber market conditions improve.

Competition in our lumber markets is based on price and quality and, to a lesser extent, the ability to meet delivery requirements on a consistent long-term basis and to provide specialized customer service. We compete in domestic lumber markets with many United States, Canadian and European producers. Canadian lumber producers have a significant position in the United States market due to their lower wood fiber costs. Competition from European lumber producers varies from year to year and is significantly impacted by alternative international wood markets and changes in both currency exchange rates and ocean freight rates. The lumber market is also subject to competition from substitute products, such as products made from engineered wood composites, fiber/cement composites, plastics and steel.

Our lumber and plywood mills produce residual wood chips, sawdust and planer shavings as by-products of the conversion of logs into finished products. The wood chips are sold to regional paper and pulp mills or used in our MDF facilities, which also consume wood chips, sawdust and shavings.

Plywood. Our two plywood plants in western Montana produce high-grade softwood plywood that we sell primarily into domestic specialized industrial markets (boat, recreational vehicle and transportation end-uses) and commercial markets (concrete forming overlay products). Our plywood products are generally of higher quality than commodity construction grade products and generally command higher prices in these specialty markets. While some plywood products are sold directly to large industrial customers, the majority is sold via stocking wholesale distributors. During 2011, we sold approximately 7% of our plywood in Canada. See “Lumber” above for a discussion of residual by-products.

Competition within the plywood market is based primarily on price and quality and, to a lesser extent, the ability to offer a full line of products and meet delivery requirements on a consistent, long-term basis. The domestic plywood market is characterized by numerous large and small producers and is also subject to competition from oriented strand board (OSB), a less expensive structural wood panel used primarily in new residential construction markets. Due to its low cost, OSB accounts for approximately 59% of North American structural panel production. To improve operating

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performance, some commodity plywood manufacturers have refocused their products toward the specialty plywood market, resulting in increased competition in the markets we serve. We expect to remain competitive due to our strong customer base, supply of superior quality timber and reputation for high-quality products.

Medium Density Fiberboard. Our MDF facilities in western Montana supply high-quality MDF to a wide range of customers throughout North America. Some of the more common uses for our MDF include furniture and cabinet components, architectural moldings, doors, store fixtures, core material for hardwood plywood, face material for softwood plywood, commercial wall paneling and substrate for laminate flooring. During 2011, we sold approximately 11% and 5% of our MDF in Canada and Mexico, respectively.

Outside North America, the MDF industry has undergone dramatic growth in terms of productive capacity and demand for its products over the past several years. Manufacturers compete on a global scale on the basis of price, quality, service and the availability of specialty products. Additionally, MDF is a ready substitute for solid wood, hardboard and hardwood plywood in specific applications. Competition in the North American MDF industry will continue to be influenced by imports from New Zealand, Asia and South America. In addition, the continuing shift of end product production to offshore manufacturing, as has been seen with certain types of furniture from China and moldings from South America, continues to negatively impact the North American MDF industry. Recently, a weak U.S. dollar along with stronger markets in select Asian and European countries has moderated the impact of imports on U.S. MDF producers.

Raw Materials. Our lumber and plywood facilities obtain approximately half of their logs from our Montana timberlands. Our timberlands currently supply high-quality logs and preferred timber species to our lumber and plywood facilities, although future harvest levels on our Montana timberlands are expected to decline modestly. Also, over time the average log size will decline due to past harvest and growth patterns.

Our lumber and plywood facilities have purchased and will continue to source stumpage and logs from external suppliers, primarily the United States Forest Service, Bureau of Indian Affairs, and state and private timberland owners. We expect to increase purchases of logs from external sources as harvest levels on our Montana timberlands decline. However, timberland harvest levels in and around Montana over the last several years have been declining, and we may experience a reduction in total future log supply which could impact manufacturing facility production or operating rates. The geographic area from which our lumber and plywood facilities obtain logs may expand or contract from year to year as the cost of logs and value of manufactured products fluctuates. (For further discussion of other timber supply issues, see “Federal and State Regulations” below). Our MDF facilities have a consistent supply of chips, sawdust and wood shavings from internal and external sources. However, as a result of declining residual by-products due to lower lumber and plywood production near our MDF facilities, we have had to expand the area in which we purchase chips, sawdust and wood shavings. This has resulted in longer hauling distances and higher raw material costs. Future MDF wood fiber sourcing is expected to also include a portion of pulpwood processed into wood chips. Both MDF and plywood use large quantities of resins, which are procured from a reliable supplier. Our lumber remanufacturing facility (the Idaho pine board plant) obtains about 10-20% of its lumber raw materials from our Plum Creek sawmill. The remainder has been procured from third-party suppliers.

Competition. Markets for manufactured forest products are highly competitive in terms of price and quality. Also, wood products are subject to increasing competition from a variety of substitutes, including non-wood and engineered wood products as well as import competition from other worldwide suppliers. We believe we can compete effectively because of our extensive private timber inventory, our reputation for environmentally responsible forestry, which has positioned us to meet regulatory challenges on a cost-effective basis, our reputation as a dependable, long-term supplier of quality products, our innovative approach to providing high-quality, value-added products to various retail and industrial niche markets and the integration of our timberlands with efficient manufacturing processes.

Other Segment - Natural Resources

We focus on realizing the maximum value potential of our extensive property ownership, including opportunities for oil and natural gas production, mineral extraction and wind power development, along with communication and transportation rights of way. This segment consists of natural resource products and markets subject to widely varying forms and levels of competition. Our strategy involves forming alliances with industry leaders to identify and develop natural resource opportunities. We currently receive royalty revenue from the extraction of oil, natural gas and other

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minerals, and wind leases from our ownership. Additionally, we receive payments in exchange for granting oil and gas exploration rights and communication and transportation rights of way.

We continue to evaluate a wide variety of non-timber natural resource opportunities, and we expect to continue to negotiate royalty arrangements and leases to capture the maximum value for our non-timber natural resource assets. Some of these activities are conducted through our wholly-owned taxable REIT subsidiaries.

Resource Management and Environmental Stewardship

Resource Management

We view our timberlands as assets with substantial inherent value and strive to manage them in an economically prudent and environmentally responsible manner to enhance their value. We seek to enhance value by improving the productivity of our forests, controlling harvesting costs, and sorting and merchandising logs to obtain their highest value.

We use different management techniques in each of our regions, employing a variety of the most cost effective silvicultural methods available. We expect timber growth rates on our timberlands to continue to improve over time as a result of genetic advances in seedlings and intensive forest management practices such as thinning, competition control, and fertilization.

Technology and forest management advances have increased growth rates and shortened harvest cycles. We believe our focus on intensive management practices will enhance forest productivity and increase the value of our timberlands over time.

Value can be enhanced on younger timber stands through thinning operations. Value increases as trees grow and add wood volume. Thinning a timber stand enables the healthier and potentially more valuable trees to grow more rapidly. As trees grow larger, they can be used in higher value applications such as high-grade lumber, plywood, and furniture.

Intensive silvicultural applications enhance the growth and value of our timberlands, including the use of trees that are bred specifically for growth, quality and disease resistant traits, early and mid-rotation applications of fertilizers, application of chemicals to control plant competition, and pre-commercial thinning to improve tree growth. These treatments improve not only the growth of the forests, but enhance the quality of the wood grown, reduce future harvesting costs, and shorten the length of harvest rotations.

To maximize the productivity of our timberlands, our approach is to ensure that every acre harvested is promptly reforested. Based on the geographic and climatic conditions of the harvest site, harvested areas may be planted or regenerated naturally by leaving mature trees to reseed the area. Natural regeneration methods are used on a substantial portion of our timberlands in the Northern Resources Segment. In the Southern Resources Segment, substantially all reforestation is done by planting.

Forests are subject to a number of natural hazards, including damage by fire, hurricanes, insects and disease. Changes in global climate conditions may intensify these natural hazards. Severe weather conditions and other natural disasters can also reduce the productivity of timberlands and disrupt the harvesting and delivery of forest products. While damage from natural causes is typically localized and would normally affect only a small portion of our timberlands at any one time, these hazards are unpredictable and losses might not be so limited. The size and diversity of our timberlands, together with our intensive forest management, should help to minimize these risks. Consistent with the practices of other large timber companies, we do not maintain insurance against loss of standing timber on our timberlands due to natural disasters, but we do maintain insurance for loss of already harvested logs due to fire and other significant occurrences.

Environmental Stewardship

We practice environmentally responsible resource management. We adhere to the philosophy that environmentally sound management practices contribute to the company’s growth in value by providing greater predictability in the

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management of its natural resource assets. We follow the principles and objectives of the Sustainable Forestry Initiative^® program (“SFI^SM”), which sets forth a comprehensive approach to responsible forest stewardship. Our forestry practices on all of our timberlands have been independently audited and certified under the SFI^SMprogram. The SFI^SM program principles, which can be found on the company’s website at www.plumcreek.com, are designed to ensure that forest management is integrated with the conservation of soil, air and water resources, wildlife and fish habitat, and aesthetics.

Consistent with these principles, we have actively engaged in habitat conservation planning. The habitats of hundreds of species are protected by several agreements, including numerous species listed as threatened or endangered under the Endangered Species Act. These Habitat Conservation Plans (“HCPs”) are as follows: 

Habitat Conservation Agreement	Protects	State(s)	Acres (millions)
Central Cascades HCP	315 species	Washington	0.1
Native Fish HCP	5 species of trout  and salmon	Montana	0.9
Karner Blue Butterfly HCP	Karner Blue  Butterfly	Wisconsin	0.2

Seasonal Effects

Log sales volumes from our Northern Resources Segment are typically at their lowest point in the second quarter of each year when warming weather thaws and softens roadbeds, thus restricting access to logging sites. Log sales volumes from our Southern Resources Segment are generally at their lowest point during the first quarter of each year, as winter rains limit operations.

Demand for manufactured products is generally lowest in the winter quarter when activity in construction markets is slower, and higher in the spring, summer and fall quarters when construction activity increases. Working capital varies with seasonal fluctuations.

Timberland sales activity in the northern states is typically at its lowest point in the late fall and winter months when access to the properties is limited due to winter weather.

Federal and State Regulations

General Environmental Regulation

Our operations are subject to federal, state and local environmental laws and regulations, including laws relating to water, air, solid waste and hazardous substances and the requirements of the Federal Occupational Safety and Health Act and comparable state statutes relating to the health and safety of our employees. Although we believe that we are in material compliance with these requirements, there can be no assurance that we will not incur significant costs, civil and criminal penalties, and liabilities, including those relating to claims for damages to property or natural resources, resulting from our operations. We maintain environmental and safety compliance programs and conduct regular internal and independent third-party audits of our facilities and timberlands to monitor compliance with these laws and regulations.

We also expect legislative and regulatory developments in the area of climate change to address carbon dioxide emissions and renewable energy and fuel standards. It is unclear as of this date how any such developments will affect our business. Enactment of new environmental laws or regulations, or changes in existing laws or regulations or the interpretation of these laws or regulations, might require significant expenditures.

Endangered Species

The Endangered Species Act protects species threatened with possible extinction. A number of species indigenous to our timberlands have been listed as threatened or endangered or have been proposed for one or the other status

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under the Endangered Species Act. As a result, our activities in or adjacent to the habitat of these species may be subject to restrictions on the harvesting of timber, reforestation activities and the construction and use of roads.

We have received incidental take permits pursuant to our Habitat Conservation Plans from the U.S. Fish and Wildlife Service that in total cover our forest management on 1.2 million acres in the Northern Resources Segment as of December 31, 2011. As required by the Endangered Species Act, we prepared Habitat Conservation Plans that will govern our management activities on the timberlands covered by the plans in these regions during their respective terms. The Habitat Conservation Plans require us to maintain certain levels of wildlife and fish habitat, and to take numerous other mitigation measures, including the protection of riparian areas. With the implementation of these mitigation measures, we are authorized to conduct forestry practices that are consistent with the conservation plans, even though they may have an adverse impact on the habitat of listed species covered by the plans.

Although the Habitat Conservation Plans have been implemented and are functioning as expected, there can be no assurance that they will remain in force or be sufficient to protect us against subsequent changes to the Endangered Species Act. Nor can there be any assurance that the Habitat Conservation Plans, individually or collectively, will be sufficient to protect us against the listing of additional species, or against changes to other applicable laws and regulations. Any of these changes could materially and adversely affect our operations.

Clean Water

The Clean Water Act and comparable state laws, regulations and best management practices programs protect water quality. As a result, our resource management activities adjacent to rivers and streams as well as the point source discharges from our manufacturing facilities are subject to strict regulation. Most silvicultural activities are defined by regulation to be “non-point sources” and thus do not require federal permits from the Environmental Protection Agency, but rather are subject to state regulation and best management practices programs. Recent litigation, however, has challenged this silvicultural exemption under the Clean Water Act. Accordingly, there can be no assurance that our forest management activities will not be subject to increased regulation under the Clean Water Act in the future. Refer to Part II, Item 7, Recent Events, Clean Water Act - Ninth Circuit Ruling for further discussion of this litigation.

At this time, we believe that federal and state laws and regulations related to the protection of endangered species and clean water will not have a material adverse effect on our financial position, results of operations or liquidity. We anticipate, however, that increasingly strict laws and regulations relating to the environment, natural resources and forestry operations, as well as increased social concern over environmental issues, may result in additional restrictions on us leading to increased costs, additional capital expenditures and reduced operating flexibility. We believe that our experience provides us a relative competitive advantage in managing environmental risks.

Timberlands

Our forest practices are and will in the future be subject to specialized statutes and regulations in the states where we operate. Many of these states have enacted laws that regulate forestry operations, such as growing, harvesting and processing activities on timberlands. Among other requirements, these laws impose some reforestation obligations on the owners of timberlands. Several states require prior notification before beginning harvesting activities. A number of states require a regulatory review taking from 15 to 30 days or more prior to harvesting, depending upon the environmental and other sensitivities of the proposed activity. Other state laws and regulations control the following activities: slash burning and harvesting during fire hazard periods; activities that affect water sources or are in proximity to inland shorelines; activities that affect water quality; and some grading and road construction activities.

Encumbrances

Under the terms of our debt agreements, we have agreed not to pledge, assign or transfer timberlands, except under limited circumstances.

We hold fee title to almost all of our timberlands, with approximately 3% held as leasehold interests. Furthermore, there are no material liens or mortgages of any kind on our timberlands. The title to our timberlands does not always include the related hard rock mineral interests or oil and gas rights. Title to the timberlands is subject to presently

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existing easements, rights of way, flowage and flooding rights, servitudes, hunting and other leases, licenses and permits, none of which materially adversely affect the value of the timberlands or materially restrict the harvesting of timber or other operations.

Employees

As of December 31, 2011, we had 645 salaried and 547 non-union hourly employees. We believe that our employee relations are good. Our wage scale and benefits are generally competitive with other forest products companies. The planting of tree seedlings and the harvesting and delivery of logs are conducted by independent contractors.

Certain Corporate Governance and Other Available Information

The company maintains a code of ethics entitled the Plum Creek Code of Conduct, which applies to each director and to all of the company’s employees including the principal executive officer, the principal financial officer and the principal accounting officer. In addition, each committee of the company’s board of directors is governed by a charter. The Plum Creek Code of Conduct and the governing charters of the Audit, Compensation, and Corporate Governance and Nominating committees, along with the company’s Corporate Governance Guidelines, can be found in the “Corporate Governance” section of the company’s website accessible to the public at www.plumcreek.com. To find this section, click on the “Investors” link and then the “Corporate Governance” link. The company will post any amendments to, or waivers from, a provision of the Plum CreekCode of Conduct (to the extent applicable to any director or any of the company’s executive officers, including the principal executive officer, principal financial officer or principal accounting officer) at this location on its website. The company will also post to its website the name of any director who simultaneously serves on the audit committee of more than three public companies, along with the Board’s determination that such service would not impair any such director’s ability to serve on the company’s audit committee. In addition to these documents, the company’s annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and reports concerning transactions in the company’s stock by directors and certain officers of the company, and any amendments to those reports, can also be found on our website by first clicking the “Investors” link, then the “Financial Publications” link and finally the “SEC Filings” link. Copies of any of these documents may be obtained free of charge through our website or by contacting the company’s Investor Relations Department at 999 Third Avenue, Suite 4300, Seattle, Washington 98104, or by calling (206) 467-3600.

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ITEM 1A. RISK FACTORS

Business and Operating Risks

The Cyclical Nature of Our Business Could Adversely Affect Our Results of Operations

Our results of operations are affected by the cyclical nature of the economy, the forest products industry and real estate markets. Historical prices for logs, land and manufactured wood products have been volatile, and we have limited direct influence over the time and extent of price changes. The demand for logs and wood products is affected primarily by the level of new residential construction activity and, to a lesser extent, repair and remodeling activity and other industrial uses. The demand for logs is also affected by the demand for wood chips in the pulp and paper and engineered wood products markets. These activities are, in turn, subject to fluctuations due to, among other factors:

• changes in domestic and international economic conditions;

• interest rates;

• population growth and changing demographics; and

• seasonal weather cycles (e.g., dry summers, wet winters).

Decreases in the level of residential construction activity generally reduce demand for logs and wood products. This results in lower revenues, profits and cash flows. In addition, industry-wide increases in the supply of logs and wood products during favorable price environments can also lead to downward pressure on prices. Timber owners generally increase production volumes for logs and wood products during favorable price environments. Such increased production, however, when coupled with even modest declines in demand for these products in general, could lead to oversupply and lower prices.

Our results of operations may also be subject to global economic changes as global supplies of wood fiber and wood products shift in response to changing economic conditions. Changes in global economic conditions that could affect our results of operations include, but are not limited to, new timber supply sources and changes in currency exchange rates, foreign and domestic interest rates and foreign and domestic trade policies. In particular, the recent turmoil in the financial markets and the limited availability of credit is having a negative financial impact on potential buyers of our logs, manufactured forest products and timberland.

In addition, changes in our ability to sell or exchange non-strategic timberlands and timberland properties that have higher and better uses at attractive prices, or changes that adversely affect our ability to execute on certain real estate development activities conducted through our wholly-owned taxable REIT subsidiaries, could have a significant effect on our results of operations. We do not expect significant, if any, improvement in real estate prices or demand during 2012, and recovery to pre-2009 levels may take several years. Many real estate developers are expected to continue to postpone their planned development activities, which may make it more difficult for us to sell development property.

The following factors, among others, may adversely affect the timing and amount of our income generated by our timberland sales or our real estate development activities:

• general economic conditions;

• availability of funding for governmental agencies, developers, conservation organizations, individuals and others to purchase our timberlands for recreational, conservation, residential or other purposes;

• local real estate market conditions, such as oversupply of, or reduced demand for, properties sharing the same or similar characteristics as our timberlands;

• competition from other sellers of land and real estate developers;

• weather conditions or natural disasters having an adverse effect on our properties;

• relative illiquidity of real estate investments;

• changes in interest rates;

• impact of federal, state and local land use and environmental protection laws;

• changes in laws, regulations or the regulatory environment affecting tax, real estate and zoning;

• our ability to obtain all land use entitlements and other permits necessary for our development activities; or

• real estate markets and their impact on our ability or the ability of our partners to timely pursue our joint venture development strategy.

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The Forest Products Industry is Highly Competitive

The forest products industry is highly competitive in terms of price and quality. Wood products are subject to increasing competition from a variety of substitute products, including non-wood and engineered wood products. For example, plywood markets are subject to competition from oriented strand board, and U.S. lumber and log markets are subject to competition from other worldwide suppliers.

Historically, Canada has been a significant source of lumber for the U.S. market, particularly in the new home construction market. After years of trade disputes over Canadian lumber imports, the U.S. and Canada executed a definitive agreement establishing a system of tiered taxes and/or volume restrictions relating to Canadian lumber imports to the U.S. The agreement expires in 2015. Notwithstanding the signing of this agreement, there can be no assurance that it will at all times, or at any time, effectively create a fair trade environment. Therefore, downward pressure on domestic timber and lumber prices caused by Canadian imports could continue or increase.

Our Joint Ventures May Pose Unique Risks

We may participate in joint venture transactions from time to time, including but not limited to joint ventures involving the ownership and management of timberlands, and we may enter into other joint venture projects with similar or different structures and terms. Any joint venture involves risks including, but not limited to, the risk that one or more of our joint venture partners takes actions that are contrary to our agreed upon terms, our instructions to them or to our policies or objectives, any one of which could cause adverse consequences for us.

Our Cash Dividends are Not Guaranteed and May Fluctuate

We have elected to be taxed as a REIT under sections 856-860 of the United States Internal Revenue Code of 1986, as amended. Generally, REITs are required to distribute 90% of their taxable income. However, REITs are required to distribute only their ordinary taxable income and not their net capital gains income. Accordingly, we do not believe that we are required to distribute material amounts of cash given that substantially all of our taxable income is treated as capital gains income. To the extent capital gains income is not distributed to shareholders, a REIT would be subject to a 35% federal corporate income tax and applicable state income taxes on the undistributed capital gains income. In addition, the shareholders would be required to report their share of the retained capital gains income on their respective income tax returns, but would receive a refundable tax credit for their share of the tax paid at the corporate level.

Our Board of Directors, in its sole discretion, determines the amount of the quarterly dividends (including the determination of whether to retain net capital gains income) to be provided to our stockholders based on consideration of a number of factors including, but not limited to, our results of operations, cash flow and capital requirements, economic conditions, tax considerations, borrowing capacity and other factors, including debt covenant restrictions that may impose limitations on cash payments, future acquisitions and divestitures, harvest levels, changes in the price and demand for our products and general market demand for timberlands, including those timberland properties that have higher and better uses. Consequently, our dividend levels may fluctuate.

We May Be Unsuccessful in Carrying Out Our Acquisition Strategy

We intend to pursue acquisitions of strategic timberland properties when market conditions warrant. As with any investment, our future acquisitions, if any, may not perform in accordance with our expectations. In addition, we anticipate financing such acquisitions through cash from operations, borrowings under our unsecured credit facilities, proceeds from equity or debt offerings (including offerings of limited partnership units by our operating partnership) or proceeds from asset dispositions, or any combination thereof. Our inability to finance future acquisitions on favorable terms or the failure of any acquisitions to conform to our expectations, could adversely affect our results of operations.

We Depend on External Sources of Capital for Future Growth

Our ability to finance growth is dependent to a significant degree on external sources of capital. Our ability to access such capital on favorable terms could be hampered by a number of factors, many of which are outside of our control,

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including, without limitation, a decline in general market conditions, decreased market liquidity, a downgrade to our public debt rating, increases in interest rates, an unfavorable market perception of our growth potential, a decrease in our current or estimated future earnings or a decrease in the market price of our common stock. In addition, our ability to access additional capital may also be limited by the terms of our existing indebtedness, which, among other things, restricts our incurrence of debt and the payment of dividends. Any of these factors, individually or in combination, could prevent us from being able to obtain the capital we require on terms that are acceptable to us, and the failure to obtain necessary capital could materially adversely affect our future growth.

Our Ability to Harvest and Deliver Timber May Be Subject to Limitations Which Could Adversely Affect Our Operations

Weather conditions, timber growth cycles, access limitations, availability of contract loggers and haulers, and regulatory requirements associated with the protection of wildlife and water resources may restrict harvesting of timberlands as may other factors, including damage by fire, insect infestation, disease, prolonged drought, flooding and other natural disasters. Changes in global climate conditions could intensify one or more of these factors. Although damage from such natural causes usually is localized and affects only a limited percentage of the timber, there can be no assurance that any damage affecting our timberlands will in fact be so limited. As is common in the forest products industry, we do not maintain insurance coverage with respect to damage to our timberlands.

Our revenues, net income and cash flow from operations are dependent to a significant extent on the pricing of our products and our continued ability to harvest timber at adequate levels. In addition, the terms of our long-term debt agreements limit our ability to fund dividends to stockholders by accelerating the harvest of significant amounts of timber.

Activities Conducted on Our Timberlands and in Our Manufacturing Facilities Are Subject to Federal and State Environmental Laws and Regulations

Laws, regulations and related judicial decisions and administrative interpretations affecting our business are subject to change, and new laws and regulations that may affect our business are frequently enacted. These changes may adversely affect our ability to harvest and sell timber, operate our manufacturing facilities, remediate contaminated properties and/or develop real estate. These laws and regulations relate to, among other things, the protection of timberlands, endangered species, timber harvesting practices, recreation and aesthetics and the protection and restoration of natural resources, air and water quality. Over time, the complexity and stringency of these laws and regulations have increased, and the enforcement of these laws and regulations has intensified.

We are subject to regulation under, among other laws, the Clean Air Act, the Clean Water Act ("CWA"), the Resource Conservation and Recovery Act, the Comprehensive Environmental Response Compensation and Liability Act of 1980 and the Endangered Species Act, as well as comparable state laws and regulations. Any violation of these and similar environmental laws and related rules and regulations that apply to our operations could result in significant civil penalties and remediation expenses, along with potential injunctions, cease and desist orders and criminal penalties.

We engage directly in the following activities that are subject to regulation:

• forestry activities, including harvesting, planting, herbicide and other silvicultural activities, and construction, use and maintenance of roads;

• the generation of air emissions;

• the discharge of industrial wastewater and storm water; and

• the generation and disposal of both hazardous and non-hazardous chemicals and materials.

Some environmental laws impose strict liability, rendering a person liable for environmental damage without regard to the person’s negligence or fault. These laws or future legislation or administrative or judicial action with respect to protection of the environment may adversely affect our business or require significant expenditures.

We are occasionally involved in environmental management matters and proceedings related to our manufacturing operations, our manufactured products and our timberland and natural resources holdings.  Our manufacturing processes use hazardous substances and generate pollutants.  Accordingly, we may be subject to claims for product

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liability or negligence, including claims for personal injury or property damage alleged to have arisen out of the use of our products or the release of hazardous substances. Moreover, on some of our vast land holdings we may discover environmental contamination. To date, we have not incurred significant costs for any material liabilities relating to such matters.

The Endangered Species Act and comparable state laws protect species threatened with possible extinction. A numberof species on our timberlands have been and in the future may be protected under these laws. Protection of threatened and endangered species may include restrictions on timber harvesting, road building and other forest practices on private, federal and state land containing the affected species.

The Clean Water Act ("CWA") regulates the direct and indirect discharge of pollutants into the waters of the United States. Under the CWA, it is unlawful to discharge any pollutant from a “point source” into U.S. navigable waters without a permit obtained under the Environmental Protection Agency's (“EPA”) National Pollutant Discharge Elimination System ("NPDES") permit program. Historically, storm water from forest roads conveyed through ditches, culverts and channels were exempted by EPA rule from this permit requirement, leaving these sources of water discharge to state regulation. However, a recent federal circuit court decision has overturned this exemption. The U.S. Supreme Court has been asked to review that decision, and legislation was recently passed that temporarily stays the court's decision until September 30, 2012. However, the EPA exemption and future regulation of forest road storm water runoff remains uncertain. Should water runoff from roads be subject to NPDES permitting, a significant increase in operational and compliance costs for the company is possible. For a more complete description of this matter, see our discussion under Management's Discussion and Analysis of Financial Condition and Results of Operations.

In addition to the foregoing activities, we have leased some of our properties to third-party operators for the purpose of exploring, developing and producing oil and gas and mineral extraction in exchange for fees and royalty payments. These activities involve drilling wells and are subject to federal, state and local laws and regulations. Some of these wells involve hydraulic fracturing, which is a process that creates a fracture extending from the well bore in a rock formation to enable gas or oil to move through the rock pores to a production well. Fractures are typically created through the injection of water, chemicals and sand into the rock formation. On some of our properties, these operations may create risk of environmental liabilities for any unlawful discharge of oil, gas or other chemicals into the air, soil or water. Generally, our lease arrangements provide that our third-party operators indemnify us against any such operating liability and that they maintain liability insurance. However, if for any reason our third-party operators do not indemnify us, or if liability insurance were not in effect, then it is possible that we could be responsible for costs associated with environmental liability caused by third-party operators. If that were to occur, such costs could have a material adverse effect on our financial condition and results of operations.

The Impacts of Climate-Related Initiatives Remain Uncertain at This Time

There are several international, federal and state-level proposals addressing domestic and global climate issues. Generally, such proposals in the U.S. could impose regulation or taxation on the production of carbon dioxide and other “greenhouse gases” in an attempt to reduce emissions to the atmosphere, and provide tax and other incentives to produce and use more “clean energy.” Any future legislative and regulatory activity in this area could, in some way, affect us, but it is unclear at this time whether any such impact would be positive, negative, or significant.

Changes in Transportation Availability or Costs

Our business depends on the availability of logging contractors and providers of transportation of wood products, and is materially affected by the cost of these service providers. Therefore, an increase in the cost of fuel could negatively impact our financial results by increasing the cost associated with logging activities and transportation services, and could also result in an overall reduction in the availability of these services.

Stock Ownership

Provisions in Our Certificate of Incorporation and Delaware Law May Prevent a Change in Control

Some provisions of our certificate of incorporation may discourage a third party from seeking to gain control of us. For example, the ownership limitations described in our certificate of incorporation could have the effect of delaying,

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deferring, or limiting a change of control in which holders of our common stock might receive a premium for their shares over the then prevailing market price. The following is a summary of provisions of our certificate of incorporation that may have this effect.

Ownership Limit. In order for us to maintain our qualification as a REIT, not more than 50% of the value of our outstanding shares of capital stock may be owned, directly or indirectly, by five or fewer individuals, as defined in the Internal Revenue Code. For the purpose of preserving our REIT qualification, our certificate of incorporation prohibits ownership, either directly or under the applicable attribution rules of the Internal Revenue Code, of more than 9.8% of the lesser of the total number of shares of our common stock outstanding or the value of the outstanding shares of our common stock by any stockholder (the “Ownership Limit”). The Ownership Limit may have the effect of discouraging an acquisition of control of us without the approval of our Board of Directors.

The Ownership Limit in our certificate of incorporation also restricts the transfer of our common stock. For example, any transfer of our equity is null and void if the transfer would:

• result in any person owning, directly or indirectly, equity in excess of the Ownership Limit;

• result in our equity being owned, directly or indirectly, by fewer than 100 persons;

• result in us being “closely held” (as defined in the Internal Revenue Code);

• result in us failing to qualify as a “domestically controlled REIT” (as defined in the Internal Revenue Code); or

• otherwise cause us to fail to qualify as a REIT.

Preferred Stock. Our certificate of incorporation authorizes our Board of Directors to issue up to 75 million shares of preferred stock. Upon issuance, our Board of Directors will establish the preferences and rights for this preferred stock. These preferences and rights may include the right to elect additional directors. The issuance of preferred stock could have the effect of delaying or preventing a change in control of us even if a change in control were in our stockholders’ best interests.

Section 203 of the Delaware General Corporation Law. Section 203 of the Delaware General Corporation Law generally prohibits us from engaging in business transactions with a person or entity that owns 15% or more of our voting stock for a period of three years following the time such person or entity became an “interested stockholder” unless, prior to such time, our Board of Directors approved either the business combination or the transaction which resulted in such person or entity becoming an interested stockholder. A business transaction may include mergers, asset sales and other transactions resulting in financial benefit to the person or entity that owns 15% or more of our voting stock.

Tax Risks

If We Fail to Qualify as a REIT, We Would Be Subject to Tax at Corporate Rates and Would Not Be Able to Deduct Dividends to Stockholders When Computing Our Taxable Income

If in any taxable year we fail to qualify as a REIT, unless we were entitled to relief under the Internal Revenue Code:

• we would be subject to federal and state income tax on our taxable income at regular corporate rates;

• we would not be allowed to deduct dividends to stockholders in computing our taxable income; and

• we would also be disqualified from treatment as a REIT for the four taxable years following the year during which we lost qualification.

If we fail to qualify as a REIT, we might need to borrow funds or liquidate some investments in order to pay the additional tax liability. Accordingly, funds available for investment or dividends to our stockholders would be reduced.

Qualification as a REIT involves the application of highly technical and complex provisions of the Internal Revenue Code to our operations and the determination of various factual matters and circumstances not entirely within our control. There are only limited judicial or administrative interpretations of these provisions. Although we operate in a manner consistent with the REIT qualification rules, we cannot assure you that we are or will remain so qualified.

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In addition, federal and state tax laws are constantly under review by persons involved in the legislative process, the Internal Revenue Service, the United States Department of the Treasury, and state taxing authorities. Changes to the tax law could adversely affect our stockholders. We cannot predict with certainty whether, when, in what forms, or with what effective dates, the tax laws applicable to us or our stockholders may be changed.

Certain of Our Business Activities are Potentially Subject to Prohibited Transactions Tax or Corporate-Level Income Tax

Under the Internal Revenue Code, REITs must generally engage in the ownership and management of income producing real estate. For Plum Creek, this generally includes owning and managing a timberland portfolio for the production and sale of standing timber. Accordingly, the manufacture and sale by us of wood products, the harvesting and sale of logs, and the development and/or sale of certain timberlands are conducted through one or more of our wholly-owned taxable REIT subsidiaries (“TRSs”) because such activities could either generate non-qualifying REIT income or could constitute “prohibited transactions.” Prohibited transactions are defined by the Internal Revenue Code generally to be sales or other dispositions of property to customers in the ordinary course of a trade or business. By conducting our business as described above we believe that we satisfy the REIT requirements of the Internal Revenue Code and could not be subject to the 100% tax that could be imposed if a REIT were to engage in a prohibited transaction. We may not always be successful, however, in limiting such activities to our TRSs. Therefore, we could be subject to the 100% prohibited transactions tax if such instances were to occur. The net income of our TRSs is subject to corporate-level income tax.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

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ITEM 2. PROPERTIES

We believe that our timberlands and manufacturing facilities are suitable and adequate for current operations (see Item 1. “Business” for discussion of the location and description of properties and encumbrances related to the properties). We own and operate modern manufacturing facilities, reported as part of our Manufactured Products Segment, strategically located near our Montana timberlands. The manufacturing facilities are maintained through on-going capital investments, regular maintenance and equipment upgrades. Additional information about our facilities by product line follows: 

	Annual Capacity (in millions)  (A)	2011 Actual Production (in millions) (B)
Lumber—board feet
Columbia Falls, MT	95	67
Evergreen, MT	100	—
Evergreen, MT (Remanufacturing)	65	—
Meridian, ID (Remanufacturing)	70	56
Total Lumber Capacity	330	123
Plywood—square feet (3/8”)
Columbia Falls, MT	120	85
Evergreen, MT	160	92
Total Plywood Capacity	280	177
MDF—square feet (3/4”)
Columbia Falls, MT (Thick Line MDF)	145	60
Columbia Falls, MT (Thin Line MDF)	120	103
Total MDF Capacity	265	163

^(A)  Capacity represents the proven annual production capabilities of the facility under normal operating conditions and producing a normal product mix. Production volumes may vary due to several factors, including end-use market conditions, wood fiber supply and labor availability.

^(B)  Actual production in 2011 was lower than our historic operating levels as a result of the significant decline in demand for wood products caused by low U.S. housing starts and the ongoing optimization of our facilities' production volumes to our longer term operating expectations. During 2009, we suspended production at our Evergreen, MT sawmill and remanufacturing facility.

ITEM 3. LEGAL PROCEEDINGS

There is no individual pending or threatened litigation involving the company that we believe would have a material adverse effect on the company’s financial position, results of operations or liquidity. However, see Note 15 of the Notes to Consolidated Financial Statements.

ITEM 4. MINE SAFETY DISCLOSURES

Not Applicable.

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Executive Officers of the Registrant

Executive officers are elected annually at the first quarterly meeting of the Board of Directors following the annual meeting of stockholders.

Name	Age	Office (M)	Officer Since
Rick R. Holley (A)	60	President and Chief Executive Officer	1989
Thomas M. Lindquist (B)	51	Executive Vice President and Chief Operating Officer	2001
David W. Lambert (C)	51	Senior Vice President and Chief Financial Officer	2002
James A. Kilberg (D)	55	Senior Vice President, Real Estate	2003
James A. Kraft (E)	56	Senior Vice President, General Counsel and Secretary	1989
Larry D. Neilson (F)	52	Senior Vice President, Resources and Operations Support	2002
Russell S. Hagen (G)	46	Senior Vice President, Business Development	2006
David A. Brown (H)	57	Vice President, Chief Accounting Officer	2002
Barbara L. Crowe (I)	60	Vice President, Human Resources	1997
Joan K. Fitzmaurice (J)	54	Vice President, Communications, Sustainability and Audit	2002
Thomas G. Ray (K)	53	Vice President, Northwest Resources and Manufacturing	2008
Thomas M. Reed (L)	63	Vice President, Southern Resources	2003

^(A)  Served since January 1994 as President and Chief Executive Officer. Mr. Holley was Vice President and Chief Financial Officer from April 1989 to December 1993.

^(B)  Served since April 2007 as Executive Vice President and Chief Operating Officer. From December 2001 to March 2007, Mr. Lindquist served as Executive Vice President.

^(C)  Served since August 2006 as Senior Vice President and Chief Financial Officer. From January 2006 to August 2006, Mr. Lambert served as Vice President, Business Development. Mr. Lambert was Vice President, Treasurer from January 2002 to January 2006, Director of Planning, Treasurer from June 1998 to January 2002 and Director of Finance and Treasurer from November 1994 to June 1998.

^(D)  Served since April 2006 as Senior Vice President, Real Estate. Mr. Kilberg previously served as Vice President, Land Management from January 2003 to March 2006.

^(E)  Served since January 2002 as Senior Vice President, General Counsel and Secretary. Mr. Kraft was Vice President, General Counsel and Secretary from April 1996 to January 2002, Vice President, Law from January 1994 to April 1996 and Vice President, Law and Corporate Affairs from April 1989 to December 1993.

^(F)  Served since September 2011 as Senior Vice President, Resources and Operations Support. From October 2005 to September 2011, Mr. Neilson served as Senior Vice President, Business Development. Mr. Neilson was Vice President, Real Estate from August 2002 to October 2005.

^(G)  Served since December 2011 as Senior Vice President, Business Development. From September 2011 to December 2011, Mr. Hagen served as Vice President, Business Development. From October 2006 to September 2011, Mr. Hagen served as Vice President, Real Estate Development. Mr. Hagen served as General Manager, Energy and Natural Resources from January 2002 to October 2006, Director, Financial Operations and Technology from December 1999 to January 2002 and Director, Financial Operations and Risk Management from April 1995 to December 1999.

^(H)  Served since February 2006 as Vice President, Chief Accounting Officer. Mr. Brown was Vice President, Controller (Chief Accounting Officer) from March 2004 to February 2006, Vice President, Controller from January 2002 to March 2004, Controller from November 1994 to January 2002 and Director of Planning from July 1994 to November 1994.

^(I)  Served since April 1997 as Vice President, Human Resources.

^(J)  Served since September 2011 as Vice President, Communications, Sustainability and Audit. From June 2002

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to September 2011, Ms. Fitzmaurice served as Vice President, Corporate Communications, Audit and Information Technology.

^(K)  Served since April 2010 as Vice President, Northwest Resources and Manufacturing. Mr. Ray was Vice President, Northwest Operations from December 2009 to March 2010, Vice President, Montana Operations from December 2008 to December 2009 and General Manager, Northwest Resources from 2001 to November 2008.

^(L)  Served since August 2006 as Vice President, Southern Resources. From September 2002 to August 2006, Mr. Reed served as Vice President, Southeast Region. Mr. Reed was Regional Manager, Coastal Operations from September 2001 to September 2002.

^(M)  There are no family relationships among the executive officers of the company.

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Part II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Plum Creek Timber Company, Inc.’s common stock is traded on the New York Stock Exchange. As of February 15, 2012, there were 14,879 stockholders of record and 161,406,910 outstanding shares.

Trading price data, as reported on the New York Stock Exchange Composite Tape, and declared cash dividend information for the years ended December 31, 2011 and 2010, are as follows:

	1st Quarter		2nd Quarter		3rd Quarter		4th Quarter
2011
High	$	43.72	$	44.28	$	41.60	$	38.60
Low	37.52		38.13		34.00		33.02
Cash Dividend per Share	$	0.42	$	0.42	$	0.42	$	0.42
2010
High	$	39.38	$	43.75	$	38.90	$	39.34
Low	34.91		33.17		33.11		35.18
Cash Dividend per Share	$	0.42	$	0.42	$	0.42	$	0.42

Future dividends will be determined by our Board of Directors, in its sole discretion, based on consideration of a number of factors including, but not limited to, our results of operations, cash flow and capital requirements, economic conditions, tax considerations, debt covenant restrictions that may impose limitations on our ability to make cash payments, borrowing capacity, changes in the prices of and demand for our products, and changes in our ability to sell or exchange timberlands at attractive prices. Other factors that our Board of Directors considers include the appropriate timing of timber harvests, acquisition and divestiture opportunities, stock repurchases, debt repayment and other means by which the company delivers value to our stockholders. See Notes 8 and 9 of the Notes to Consolidated Financial Statements for the restrictions under our debt agreements to pay dividends.

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Company Stock Price Performance

The following graph shows a five-year comparison of cumulative total stockholder returns for the company, the Standard & Poor’s 500 Composite Index and the Standard & Poor’s Paper and Forest Product Stock Index for the five years ended December 31, 2011. The total stockholder return assumes $100 invested at the beginning of the period in the company’s common stock, the Standard & Poor’s 500 Composite Index and the Standard & Poor’s Paper and Forest Product Stock Index. It also assumes reinvestment of all dividends.

The following table shows total stockholder return for the previous one year ended December 31:

	2007		2008		2009		2010		2011
Plum Creek	20.3	%	(21.4	)%	14.5	%	3.8	%	1.9	%
S&P Paper and Forest Product Stock Index	3.9	%	(59.6	)%	95.5	%	5.5	%	14.0	%
S&P 500 Index	5.5	%	(37.0	)%	26.5	%	15.1	%	2.1	%

The following table shows total indexed return of stock price plus reinvestment of dividends, assuming an initial investment of $100.00 at December 31, 2006 for the years ended December 31:

	12/31/2006		2007		2008		2009		2010		2011
Plum Creek	$	100	$	120	$	95	$	108	$	112	$	115
S&P Paper and Forest Product Stock Index	$	100	$	104	$	42	$	82	$	87	$	99
S&P 500 Index	$	100	$	105	$	66	$	84	$	97	$	99

Notwithstanding anything to the contrary set forth in any of the Company’s previous filings under the Securities Act of 1933, as amended, or the Exchange Act that might incorporate future filings, including this Form 10-K, in whole or in part, the preceding company stock price performance graph shall not be incorporated by reference into any such filings; nor shall such graph be incorporated by reference into any future filings.

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Purchase of Equity Securities

The following table contains information about the company’s purchases of equity securities during the fourth quarter of 2011:

Period	Total Number of Shares  Purchased (A)	Average Price  Paid per Share	Total Number of Shares  Purchased as Part of Publicly Announced Plans or Programs (B)	Maximum Number (or  Approximate Dollar Value) of Shares that May Yet Be Purchased Under the  Plans or Programs (B)
October 1, 2011 through October 31, 2011	299,212   shares of common stock	$34.88	298,400   shares of common stock	$ 175 million
November 1, 2011 through November 30, 2011	0   shares of common stock	—	0   shares of common stock	$ 175 million
December 1, 2011 through December 31, 2011	0   shares of common stock	—	0   shares of common stock	$ 175 million
Total	299,212   shares of common stock	$34.88	298,400   shares of common stock

^(A)  Includes shares of the company’s common stock purchased from employees in non-open market transactions. The shares of stock were sold by the employees to the company in exchange for cash that was used to pay withholding taxes associated with the vesting of restricted stock unit awards under the company’s stock incentive plan. The price per share surrendered is based on the closing price of the company’s stock on the vesting dates of the awards.

^(B)  The Board of Directors, from time to time, has authorized a share repurchase program. On August 3, 2010, the Board of Directors authorized a $200 million share repurchase program, which was publicly announced on August 4, 2010. At December 31, 2011, the remaining share repurchase authorization was $175 million.

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ITEM 6. SELECTED FINANCIAL DATA

Financial Highlights

The following table summarizes selected financial highlights for the five most recent fiscal years (dollars in millions, except per share amounts):

	2011			2010		2009			2008			2007
Income Statement Items
Revenues	$	1,167		$	1,190	$	1,294		$	1,614		$	1,675
Operating Income	275			297		299			328			424
Equity Earnings from Timberland Venture	56			57		55			15			—
Interest Expense (Note Payable to Timberland Venture)	58			58		58			14			—
Interest Expense, net (Debt Obligations to Unrelated Parties)	81			80		89			134			147
Income before Income Taxes (A)	192			203		205			206			277
Provision (Benefit) for Income Taxes	(1		)	1		(31		)	(27		)	(3		)
Income from Continuing Operations	193			202		236			233			280
Gain on Sale of Properties, net of tax	—			11		—			—			2
Net Income	193			213		236			233			282
Non-Cash Items
Depreciation, Depletion and Amortization (B)	96			96		109			135			134
Basis of Real Estate Sold	77			132		155			149			108
Balance Sheet Items
Total Assets	4,259			4,251		4,448			4,780			4,664
Total Debt Obligations (to Unrelated Parties) (C)	1,996			1,909		2,006			2,189			2,532
Note Payable to Timberland Venture (a Related Party)	783			783		783			783			—
Earnings per Share (Diluted)
Income from Continuing Operations	$	1.19		$	1.24	$	1.44		$	1.37		$	1.60
Net Income	$	1.19		$	1.31	$	1.44		$	1.37		$	1.61
Dividends Declared per Share	$	1.68		$	1.68	$	1.68		$	1.68		$	1.68
Timberland and Mineral Acquisitions
Purchase Price	$	101		$	—	$	—		$	119		$	174
Acres	59,000			—		—			147,000			69,000
Timberland Dispositions (Acres) (D)	185,000			258,000		297,000			314,000			252,000
Harvest Volume (in Million Tons)	15.8			15.4		15.8			19.6			20.4

^(A)  Includes a $13 million loss in 2010, a $2 million loss in 2009 and an $11 million gain in 2008 on extinguishment of debt.

^(B)  Includes a $10 million lumber manufacturing assets impairment loss in both 2009 and 2008 and a $4 million loss related to forest fires in 2007.

^(C)  Includes Timber Obligations accounted for as capital leases.

^(D)  Timberland dispositions during 2008 do not include approximately 454,000 acres located in the Southern Resources Segment that were contributed to a timberland venture in exchange for an equity interest.

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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-Looking Statement

This Report contains forward-looking statements within the meaning of the Private Litigation Reform Act of 1995. Some of the forward-looking statements can be identified by the use of forward-looking words such as “believes,” “expects,” “may,” “will,” “should,” “seeks,” “approximately,” “intends,” “plans,” “estimates,” “projects,” “strategy,” or “anticipates,” or the negative of those words or other comparable terminology. Forward-looking statements involve inherent risks and uncertainties. A number of important factors could cause actual results to differ materially from those described in the forward-looking statements, including those factors described in “Risk Factors” under Item 1A in this Form 10-K. Some factors include changes in governmental, legislative and environmental restrictions, catastrophic losses from fires, floods, windstorms, earthquakes, volcanic eruptions, insect infestations or diseases, as well as changes in economic conditions and competition in our domestic and export markets and other factors described from time to time in our filings with the Securities and Exchange Commission. In addition, factors that could cause our actual results to differ from those contemplated by our projected, forecasted, estimated or budgeted results as reflected in forward-looking statements relating to our operations and business include, but are not limited to:

• the failure to meet our expectations with respect to our likely future performance;

• an unanticipated reduction in the demand for timber products and/or an unanticipated increase in supply of timber products;

• an unanticipated reduction in demand for higher and better use or non-strategic timberlands;

• our failure to make strategic acquisitions or to integrate any such acquisitions effectively or, conversely, our failure to make strategic divestitures; and

• our failure to qualify as a real estate investment trust, or REIT.

It is likely that if one or more of the risks materializes, or if one or more assumptions prove to be incorrect, the current expectations of Plum Creek and its management will not be realized. Forward-looking statements speak only as of the date made, and neither Plum Creek nor its management undertakes any obligation to update or revise any forward-looking statements.

Organization of the Company

In management’s discussion and analysis of financial condition and results of operations (Item 7 of this form), when we refer to “Plum Creek,” “the company,” “we,” “us,” or “our,” we mean Plum Creek Timber Company, Inc. and its consolidated subsidiaries. References to Notes to Consolidated Financial Statements refer to the Notes to the Consolidated Financial Statements of Plum Creek Timber Company, Inc. included in Item 8 of this Form 10-K.

Plum Creek Timber Company, Inc., a Delaware Corporation and a real estate investment trust, or “REIT”, for federal income tax purposes, is the parent company of Plum Creek Timberlands, L.P., a Delaware Limited Partnership (the “Operating Partnership” or “Partnership”), and Plum Creek Ventures I, LLC, a Delaware Limited Liability Company (“PC Ventures”). Plum Creek conducts substantially all of its activities through the Operating Partnership and various wholly-owned subsidiaries of the Operating Partnership.

The Operating Partnership has borrowed and has currently outstanding $2.0 billion principal amount of debt, including $1.0 billion of publicly issued notes. PC Ventures has borrowed and has currently outstanding $783 million in principal amount of debt (“the Note Payable to Timberland Venture”) from an entity (“the Timberland Venture”) in which a subsidiary of the Operating Partnership has a common and preferred equity interest. See Note 16 of the Notes to Consolidated Financial Statements. PC Ventures used the proceeds from the borrowing to make a $783 million capital contribution to the Operating Partnership in exchange for a preferred equity interest in the Operating Partnership. PC Ventures has no other activities and the Operating Partnership has no ownership interest in PC Ventures.

The Note Payable to Timberland Venture is an obligation of PC Ventures and not an obligation of the Operating Partnership. Therefore, any discussion of the Note Payable to Timberland Venture below is not applicable to the Operating Partnership. Unless otherwise specified, all other discussion and analysis below are applicable to both Plum Creek and the Operating Partnership.

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Overview

2011 Operating Performance Compared to 2010

Our operating income for 2011 of $275 million was $22 million lower than our operating income for 2010. Our operations continue to be negatively impacted by near record low housing starts, which are a result of high unemployment, declining home values, an excess supply of homes for sale and the difficulties associated with obtaining financing for home and/or real estate purchases. We expect many of these adverse trends will continue to negatively impact our operating results in 2012.

Operating income in our Northern Resources Segment increased by $11 million from $13 million in 2010 to $24 million in 2011. This increase was due primarily to higher sawlog prices and harvest levels in Oregon as a result of an improved demand from China for export logs. Operating income in our Southern Resources Segment decreased by $33 million from $107 million in 2010 to $74 million in 2011. This decrease was due primarily to lower sawlog and pulpwood prices. Both sawlog and pulpwood prices declined because of the abundant supply of logs due primarily to favorable harvesting conditions. Sawlog prices were also negatively impacted by near record low housing starts.

Operating income in our Manufacturing Products Segment decreased by $9 million from $24 million in 2010 to $15 million in 2011. This decrease was primarily due to the rising of cost of raw materials used to manufacture our plywood and MDF products.

Operating income in our Real Estate Segment increased by $15 million from $180 million in 2010 to $195 million in 2011. Despite selling fewer acres and recognizing lower revenues in 2011, our operating income increased due primarily to selling more properties in 2011 that had a lower book basis.

Liquidity

We ended 2011 with a strong balance sheet and we do not foresee any liquidity issues in 2012. At December 31, 2011, we had a cash balance of $254 million and availability on our line of credit of $250 million. During 2011, we generated $374 million of cash from operating activities. Despite anticipated improved cash flow as a result of higher sawlog harvest volumes and prices, we expect cash provided by operating activities in 2012 to decline due to using $98 million of cash for the purchase of an eight-year timber deed. We expect our cash balance to improve approximately $50 million during 2012 due to anticipated higher sawlog volumes and prices, and also due to financing the purchase of the timber deed. As a result, we expect more than adequate cash to fund our current dividend (approximately $271 million) and planned capital expenditures (approximately $80 million). We have scheduled debt principal payments of $353 million in 2012 and $174 million in January 2013, which we expect to refinance at favorable interest rates.

Key Economic Factors Impacting Our Resources and Manufactured Products Business

Our operating performance for the Resources and Manufactured Products Segments is impacted primarily by the supply and demand for logs and wood products in the United States. The short-term supply of logs is impacted primarily by weather and the level of harvesting activities. The demand for logs and wood products in the United States is impacted by housing starts, repair and remodeling activities, industrial activity and the amount of imported lumber, primarily from Canada.

Selected U.S. housing economic data for the last five years was as follows at December 31:

	2011		2010		2009		2008		2007
U.S. Housing Starts (in millions)	0.61		0.59		0.55		0.90		1.35
Supply of Existing Homes for Sale (in months)	6		8		7		11		10
30-yr. Fixed Interest Mortgage Rates (average)	4.5	%	4.7	%	5.0	%	6.0	%	6.3	%

The housing market in 2011 remained depressed again for the fourth consecutive year. Despite record low interest rates and pent-up demand for housing, the U.S. housing market experienced no improvement during 2011. Housing

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starts continue to be negatively impacted by high unemployment, declining home values, an excess supply of homes for sale, and strict lending standards.

Housing starts in 2011 increased by 3% over the prior year due to a 54% increase in multi-family starts. However, single-family starts declined by 9% to approximately 430,000 starts in 2011, which was the lowest number of single-family starts in the past 50 years. With a single family unit using approximately twice as much wood as a multi-family unit, the demand for wood products continued to decline in 2011.

Housing starts are not expected to significantly improve until the employment outlook improves and home prices stabilize. Unlike prior recoveries from recession, the unemployment rate continues to remain high and at the end of January 2012, was 8.3%. Although the unemployment rate is slowly declining, at the current rate of job creation it is expected to take another several years before the U.S. returns to full employment. Home values (nationally) continued falling in 2011, declining an additional 3%. Currently, there exists an estimated six million homes that either have been foreclosed or are in the process of foreclosure, that are behind on their mortgage payments, or that owe more on their loan than the value of their home. As a result, home prices may continue to decline in 2012.

While we believe favorable demographics will bode well for the wood products business in the long-run and that annual housing starts will return to more normal levels (i.e. between 1.5 million and 1.6 million annual starts), for the last several years, low housing starts have significantly reduced lumber demand and, therefore, log demand. This has resulted in weak pricing for the logs and wood products we sell. We expect the prices for our logs and wood products to remain weak until there is a significant improvement in the number of U.S. housing starts, reduced levels of unemployment and a decline in the number of homes for sale.

We use independent third-party contract loggers and haulers to deliver our logs to our customers. As weak business conditions in the timber business have persisted for several years, there are fewer loggers and haulers available in certain markets to produce logs. While we continue to enhance strong working relationships with our loggers and haulers, when log markets improve there may be production and delivery constraints that could impact log prices and, potentially, our ability to benefit from these conditions by delivering logs.

Over the past several years, fuel prices have fluctuated significantly. Our timber and manufacturing operations are significantly impacted by changing fuel prices. The table below summarizes the average annual U.S. On-Highway diesel fuel prices and the impact of fluctuating fuel prices on our operating income compared to the prior annual period:

	2011			2010			2009		2008	2007
Increase/(Decrease) Operating Income (in millions)	$	(15	)	$	(4	)	$	36	$(23)	N/A
Annual Average U.S. On-Highway Diesel Price (per gallon)	$	3.85		$	2.99		$	2.46	$3.81	$	2.88

Higher Value and Non-Strategic Timberlands

From time to time, we review our timberlands to identify properties that may have higher values other than as commercial timberlands (see discussion in Item 1 - Real Estate Segment). We estimate that included in the company's 6.6 million acres of timberlands at December 31, 2011, are approximately 900,000 acres of higher value timberlands which are expected to be sold, exchanged, and/or developed over the next 15 years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. Furthermore, the company has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold over the near and medium term in smaller scale transactions (“small non-strategic”). Not included in the above 900,000 higher value acres and 300,000 small non-strategic acres are other acres that are expected to be sold in large acreage transactions to commercial timberland buyers as opportunities arise (“large non-strategic”). Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

During 2011, we sold approximately 47,000 acres of higher and better use / recreational properties for proceeds of $96 million, approximately 67,000 acres of conservation properties for proceeds of $70 million, approximately 22,000 acres of small non-strategic properties for proceeds of $27 million, along with approximately 48,000 acres of large

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non-strategic properties for proceeds of $103 million. We expect revenue from real estate sales during 2012 to range between $275 million and $325 million. We expect an increased proportion of our 2012 revenue for real estate sales to come from the sale of large non-strategic properties.

Our land development business slowed dramatically starting in 2008 and has since remained weak. We do not expect any significant proceeds from the sale of real estate development properties in 2012. We expect our real estate development business to remain weak until there is a significant improvement in consumer confidence, real estate values begin appreciating and financing becomes available for such properties.

Harvest Levels

The volume of trees we harvest each year and the percentage of sawlogs and pulpwood (product mix) included in our annual harvest also impact our operating performance. During 2011, we harvested a total of 15.8 million tons compared to a total of 15.4 million tons during 2010. We expect total 2012 harvest levels to increase approximately 7% as a result of the recent purchase of an eight-year timber deed and increasing our sawlog harvest. While we have the flexibility to modify our annual harvest volumes, based on market conditions, we expect harvest levels to increase approximately 10% over the near-term (next five years) and more than 30% over the long-term (ten years and beyond) compared to 2011 harvest levels. Future harvest levels may vary from historic or expected levels due to weaker or stronger than anticipated markets or other factors outside of our control, such as weather and fires. Future harvest levels may also be impacted by the acquisition of timberlands or the disposition of timberlands beyond the 1.2 million acres described above in the Higher Value and Non-Strategic Timberlands section.

Critical Accounting Policies

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. Under different assumptions or conditions, actual results may differ from these estimates.

We believe the following critical accounting policies affect our most significant judgments and estimates used in preparation of our consolidated financial statements:

Revenue Recognition for Timber Sales

Timber sales revenues are recognized when legal ownership and the risk of loss transfer to the purchaser and the quantity sold is determinable. We sell timber under delivered log agreements and through sales of standing timber (or “stumpage”) using pay-as-cut sales contracts or timber deed sale agreements.

Delivered Log Sales. Under a delivered log sale agreement, we harvest the timber and deliver it to the buyer. Revenue is recognized when the log is delivered as risk of loss and title transfer to the buyer. With delivered log sales, we incur the cost of logging and hauling.

Pay-as-Cut Sales Contracts. Pay-as-cut sales contracts are agreements in which the buyer agrees to purchase and harvest specified timber on a tract of land for an agreed upon price for each type of tree over the term of the contract (usually 12 to 18 months). In some cases, an advance is received in connection with pay-as-cut sales contracts. In other cases, the buyer agrees to harvest only certain trees on a tract of land. Under pay-as-cut sales contracts, the buyer is responsible for all logging and hauling costs. Revenue is recognized when the timber is harvested, as title and risk of loss has transferred to the buyer. Total revenue recognized under a pay-as-cut sales contract is the total volume of wood removed multiplied by the unit price for each type of tree.

Timber Deeds. Timber deed sales are agreements in which the buyer agrees to purchase and harvest specified timber (i.e. mature pulpwood and/or sawlogs) on a tract of land over the term of the contract (usually less than 18 months). Unlike a pay-as-cut sales contract, risk of loss and title to the trees transfer to the buyer when the contract is signed. The buyer pays the full purchase price when the contract is signed and we do not have any additional performance

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obligations. Under a timber deed, the buyer is responsible for all logging and hauling costs and the timing of such activity. Revenue from a timber deed sale is recognized when the contract is signed because the earnings process is complete. Timber deeds are generally marketed and sold to the highest bidder. Bids are typically based on a timber cruise which is an estimate of the total volume of timber on a tract of land broken down by the various types of trees (such as softwood sawlogs, hardwood pulpwood, etc.). Total revenue recognized under a timber deed is not dependent upon the volume or types of trees actually harvested.

The following table summarizes amounts recognized under each method from sales to external customers in the company’s consolidated financial statements for the years ended December 31 (in millions): 

	2011		2010
Revenues from:
Delivered log sales	$	497	$	486
Pay-as-cut sales	$	35	$	30
Timber deed sales	$	3	$	12

Substantially all of our timber sales in the Northern Resources Segment are under delivered log sale agreements. In our Southern Resources Segment, approximately 11% of our timber sales in 2011 and 12% of our timber sales 2010 consisted of pay-as-cut sales contracts or timber deed sales. Under sales of stumpage, the buyer is responsible for the logging and hauling costs; therefore, the operating profit as a percentage of revenue is typically higher in our Southern Resources Segment.

Real Estate Sales

The timing of real estate sales is a function of many factors, including the general state of the economy, demand in local real estate markets, the ability to obtain entitlements, the ability of buyers to obtain financing, the number of competing properties listed for sale, the seasonal nature of sales (particularly in the northern states), the plans of adjacent landowners, our expectation of future price appreciation, the timing of harvesting activities, and the availability of government and not-for-profit funding (especially for conservation sales). As a result, the timing of our real estate sales may materially impact our reported operating income and net income.

During 2011, the Real Estate Segment reported an operating profit percentage of approximately 65%. Over the last ten years, the Real Estate Segment’s annual operating profit percentage has ranged from 40% to 70% of revenues. The operating profit percentage depends on the nature of the interest sold and how much the market value of the property has risen over its book value. For example, sales of properties that have been held by the company for a long time (i.e. decades) will tend to have relatively higher operating profit percentages than properties that have been held by the company for shorter time periods. In contrast, the sale of conservation easements will generally have an operating profit percentage of close to 100% because historically no book basis was allocated to these types of sales.

In general, timberlands are acquired primarily for long-term use in our timber operations. In connection with timberland acquisitions, we are generally not able to identify, with any level of precision, our future real estate sales (i.e. specific properties with a higher value than for use in timber production). However, our purchase price allocation and related appraisals for these acquisitions may reflect greater values for real estate which may be sold in the future but are not yet specifically identified. Therefore, in connection with our purchase price allocation for timberland acquisitions, the greater values for real estate are allocated proportionately among all of the acres acquired. Specific properties cannot be identified in advance because their value is dependent upon numerous factors, most of which are not known at the acquisition date, including current and future zoning restrictions, current and future environmental restrictions, future changes in demographics, future changes in the economy, current and future plans of adjacent landowners, and current and future funding of government and not-for-profit conservation and recreation programs. We believe that current and future results of operations could be materially different under different purchase price allocation assumptions.

Impairment of Long-Lived Assets

We evaluate our ability to recover the net investment in long-lived assets when required by the accounting standards. We recognize an impairment loss in connection with long-lived assets used in our business when the carrying value

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(net book value) of the assets exceeds the estimated future undiscounted cash flows attributable to those assets over their expected useful life. Impairment losses are measured by the extent to which the carrying value of a group of assets exceeds the fair value of such assets at a given point in time. Generally, our fair value measurements used in calculating an impairment loss are categorized as Level 3 measurements (i.e. unobservable inputs that are supported by little or no market activity) under the fair value hierarchy in the Accounting Standards Codification. Typically, we will use a discounted cash flow model or an external appraisal to estimate the fair value of the affected assets. Furthermore, we recognize an impairment loss in connection with long-lived assets held for sale when the carrying value of the assets exceeds an amount equal to their fair value less selling costs.

The company has had a long history of acquiring timberlands. Management is required to estimate the fair values of acquired assets and liabilities as of the acquisition date. Subsequent to the original allocation, assets are tested for impairment whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable through future operations. Our long-lived assets are grouped and evaluated for impairment at the lowest level for which there are independent cash flows. We track cash flows for our 6.6 million acres of timberlands by grouping them into seven geographic areas in the Northern Resources Segment and five geographic areas in the Southern Resources Segment. Additionally, we track cash flows for each of our manufacturing facilities.

Timber and Timberlands Used in Our Business. For assets used in our business, an impairment loss is recorded only when the carrying value of those assets is not recoverable through future operations. The recoverability test is based on undiscounted future cash flows over the expected life of the assets. We use one harvest cycle (which ranges between 20 and 90 years) for evaluating the recoverability of our timber and timberlands. Because of the inherently long life of timber and timberlands, we do not expect to incur an impairment loss in the future for the timber and timberlands used in our timber business.

Timber and Timberlands Held for Sale. An impairment loss is recognized for long-lived assets held for sale when the carrying value of those assets exceeds an amount equal to its fair value less selling costs. An asset is generally considered to be held for sale when we have committed to a plan to sell the asset, the asset is available for immediate sale in its present condition, we have initiated an active program to locate a buyer (e.g., listed with a broker), and the sale is expected to close within one year. During the last several years, the above criteria have been met by some of our timberland properties, and we have recognized annual impairment losses of between $1 million and $3 million for certain of these properties (see Note 4 of the Notes to Consolidated Financial Statements).

An impairment loss is generally not recorded until management expects that timberlands will be sold within the next 12 months. For many properties that are currently listed for sale, it is difficult to conclude whether they will be sold within one year and to estimate the price. Nevertheless, management performs a probability assessment for all properties that are listed for sale and records an impairment loss (to the extent the property’s book basis exceeds its estimated fair value net of selling cost) in the quarter in which management expects the property will be sold within twelve months.

We expect to continue to sell or exchange timberlands to other forest products companies or non-industrial buyers, and it is probable that we will recognize additional impairment losses, some of which could be material, in the future in connection with sales of timberlands.

Property, Plant and Equipment. The carrying value of Property, Plant and Equipment represents primarily the net book value of our eight (two of which are curtailed until markets improve) manufacturing facilities. Each manufacturing facility is tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable through future operations. The estimated future cash flows over the remaining useful life of a manufacturing facility is highly subjective and is dependent upon estimates for future product pricing, raw material costs and availability, volumes of product sold, and residual value of the facility. No impairment losses were recorded during 2011 or 2010. During 2009, as a result of an analysis to rationalize and consolidate its lumber operations, the company recorded an impairment charge of $10 million related to certain lumber manufacturing assets.

We currently estimate that the carrying value for our eight facilities is recoverable through future operations and that our estimate of future cash flows is reasonable. However, if wood product prices were to remain weak at current levels for an extended period of time, or if log or raw material availability declines, we may record an impairment loss for one or more of our manufacturing facilities in a future period.

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Capitalized Real Estate Development Costs. Current and future costs associated with specific real estate development projects are capitalized once management has concluded it is probable that a project will be successful. Real estate development costs are expensed as incurred when management is not able to conclude that it is probable a project will be successful. Furthermore, previously capitalized costs for specific projects are written-off when management revises its prior assessment and concludes that it is probable a project will not be successful and costs will not be recovered. For many of our projects, there is less judgment in making this determination due to prior experience in the local market or advice from consultants. However, for some of our larger projects where we have limited experience in the local market or for projects in environmentally sensitive areas, there is significant judgment in assessing the expected outcome for the projects. At December 31, 2011, we have $30 million of capitalized costs associated with projects that management expects will be successful. Of these capitalized costs, approximately $18 million represent costs for a single project that has been approved by a state commission but is being appealed in court by groups opposed to the project. While not expected, if the approval is reversed, some or all of these capitalized costs could be written off in the next twelve months.

Depletion

Depletion, or costs attributed to timber harvested, is recorded as trees are harvested. Depletion rates for each geographic area are adjusted at least annually. Depletion rates are computed by dividing (A) the sum of (1) the original cost of the timber less previously recorded depletion plus (2) estimated future silviculture costs, including the impact of inflation, that are expected to be incurred over the next harvest cycle, by (B) the total timber volume that is estimated to be harvested over the harvest cycle. The harvest cycle can be as short as 20 years in the South to as long as 90 years in the North. The estimate of future silviculture costs is limited to the expenditures that are expected to impact growth rates over the harvest cycle. The depletion rate calculations do not include an estimate for either future reforestation costs associated with a stand’s final harvest or future volume in connection with the replanting of a stand subsequent to its final harvest.

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The following table summarizes depletion expense recognized in the company’s financial statements, key assumptions and sensitivities to changes in assumptions for the years ended December 31 (dollars in millions, except per ton amounts):

	2011		2010
Depletion Expense
Northern Resources Segment	$	17	$	18
Southern Resources Segment	48		48
Total Depletion Expense	$	65	$	66
Average Depletion Rates (per ton)
Northern Resources Segment	$	4.13	$	4.61
Southern Resources Segment	$	4.09	$	4.18
Assumptions Used to Determine the Average Depletion Rates
Estimated Future Silviculture Costs, including the Impact of Inflation
Northern Resources Segment	$	49	$	62
Southern Resources Segment (A)	$	531	$	485
Estimated Future Volume (in million tons)
Northern Resources Segment	269		271
Southern Resources Segment  (B)	413		392
Sensitivity of Results to Changes in Key Assumptions
Increase in Depletion Expense for a 10%:
Increase in Estimated Future Silviculture Costs (C)
Northern Resources Segment	$	0.1	$	0.1
Southern Resources Segment	$	1.5	$	1.4
Decrease in Estimated Future Volume (D)
Northern Resources Segment	$	1.9	$	2.3
Southern Resources Segment	$	5.2	$	5.3

^(A)  Reflects an increase in our estimates of future costs associated with fertilization treatments due to higher chemical and application costs and more acres treated.

^(B)  Increase from 2010 is due primarily to an increase in our estimate of rotation length for certain stands and improved growth rates.

^(C)  Assumes future timber volumes do not change.

^(D)  Assumes future silviculture costs do not change.

Significant estimates and judgments are required to determine both future silviculture costs and the volume of timber available for harvest over the harvest cycle. Some of the factors impacting the estimates are changes in inflation rates, the cost of fertilizers and chemicals, the cost of capital, the actual and estimated increase in growth rates from fertilizer applications, the relative price of sawlogs and pulpwood, the actual and expected real price appreciation of timber, the scientific advancement in seedling and growing technology, and changes in harvest cycles.

We have invested in technology that enables us to predict our current standing inventory of trees, future growth rates, and the benefits of scientific advancements in connection with seedlings, planting techniques and fertilizer applications. Therefore, while estimates with respect to depletion computations will be revised at least annually, we do not expect the depletion rates will change materially from year to year.

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Depletion Expense in 2012. In January 2012, we purchased standing timber under an eight-year timber deed for approximately $103 million with initial volume of approximately 4.7 million tons. The timber deed will have its own unique depletion rate. We expect depletion expense in our Southern Resources Segment to increase by approximately $11 million as a result of harvesting a portion of the timber deed's standing timber in 2012.

Accounting for Share-Based Compensation

Plum Creek has a stockholder approved Stock Incentive Plan that provides for the award of non-qualified stock options, restricted stock and restricted stock units, value management awards and dividend equivalents. See Note 13 of the Notes to Consolidated Financial Statements.

Grants of value management awards are classified and accounted for as liabilities. As a result, the expense recognized over the performance period will equal the fair value (i.e., cash value) of an award as of the last day of the performance period multiplied by the number of awards that are earned. Furthermore, the quarterly expense recognized during the performance period is based on the fair value as of the end of the most recent quarter. Prior to the end of the performance period, compensation cost for value management awards is based on the awards’ most recent quarterly fair values and the number of months of service rendered during the performance period.

Fair values for value management awards are computed based on our historical relative total shareholder return and simulated relative total shareholder return compared to the performance of peer groups consisting of forest products companies, the S&P 500 Index and the Morgan Stanley REIT Index over the same period (“Peer Group”). The simulated total shareholder return of the company and the Peer Group is computed using a Monte Carlo simulation. The key assumptions used in the simulation of the company’s and the Peer Group’s total shareholder return are volatility, beta (the measure of how Plum Creek’s stock moves relative to the market as a whole) and risk-free interest rate.

The fair value of the liability for outstanding value management awards at December 31, 2011 was $3 million, which is based on the current fair value of outstanding awards multiplied by the percentage of months that services were provided during the performance period. The liability at December 31, 2011 could range between $0 and $13 million based on the possible fair value of all outstanding liability based awards. We could have a material adjustment to our share-based compensation liability to the extent there is a material change in the fair value of our value management awards during the quarter.

Pensions

Pension Plans Overview. Plum Creek provides pension benefits under defined benefit pension plans that cover substantially all of our employees. See Note 12 of the Notes to Consolidated Financial Statements. We maintain a qualified defined benefit pension plan and two supplemental (non-qualified) defined benefit pension plans. Participants’ benefits vest after three years of service. The cash balance benefits for salaried employees is determined based primarily on certain percentages of compensation, age, years of service and interest accrued based on the 30-year Treasury bond rate. Participants who were employees of the company on September 1, 2000, earn benefits based on the greater of the cash balance benefits or a monthly pension benefit that is principally based on the highest monthly average earnings during any consecutive sixty-month out of the last 120-month period and the number of years of service credit. The benefits to hourly employees are generally based on a fixed amount per year of service.

Plum Creek’s contributions to its qualified pension plan vary from year to year, but the company has made at least the minimum contributions required by law in each year. It is generally the company’s policy to fund the qualified pension plan annually such that the fair value of plan assets equals or exceeds the actuarially computed accumulated benefit obligation (the approximate actuarially computed current pension obligation if the plan was discontinued) over a market cycle (generally 3 to 5 years). The company has the same funding policy for the non-qualified plan. However, assets related to the non-qualified plans are held in a grantor trust and are subject to the claims of creditors and, therefore, are not considered plan assets.

Under current U.S. generally accepted accounting principles (U.S. GAAP), the company makes estimates and assumptions that can have a significant impact on the amounts reflected in our financial statements. These assumptions and their sensitivities, along with the application of the accounting principles and impact to our financial statements, are discussed in the next several sections.

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Current Year Impact and Analysis. During 2011, our pension liability increased from $135 million to $164 million and our pension assets decreased from $106 million to $100 million. Our pension liability represents the present value of expected future benefit payments and is remeasured annually as of December 31. Each year, our pension liability increases due to employees working for one more year (service cost), and getting one year closer to receiving benefit payments (interest cost), and decreases as pension benefits are paid. Our pension liability is also adjusted due to changes in interest rates. During 2011, our pension liability increased by $21 million (an actuarial loss) due to falling interest rates. Actuarial losses are initially recognized in other comprehensive income (loss) and then subsequently amortized (charged) to pension expense over future periods.

Annually, our plan assets increase due to cash contributions from the company, decrease due to pension benefit payments, and will increase or decrease as a result of realized and unrealized gains and losses for the assets. Our pension expense is reduced by the expected returns on plan assets. We currently estimate that our long-term return on plan assets will average 7.5% per year. Based on the plan assets balance, our 2011 pension expense was reduced by $7 million (the expected return on plan assets in dollars). The actual return on plan assets was a loss of $3 million for 2011. We initially recognize this difference (shortfall) of $10 million in other comprehensive income (loss) and then subsequently will amortize (charge) to pension expense over future periods.

At December 31, 2011, our cumulative net actuarial pension loss recognized in accumulated other comprehensive income (loss) was $53 million (includes both unrecognized changes in our pension liability and plan assets), of which $4 million will be amortized (charged) to 2012 pension expense. Each year the future amortization of our actuarial pension loss recognized in pension expense will increase or decrease due to changes in interest rates and actual returns on plan assets compared to expected returns. Additionally, while not expected, future company contributions may need to be increased to the extent interest rates remain low or actual investment returns on plan assets do not meet our expectations.

Significant Assumptions. The computation of the company’s benefit obligation, pension cost and accrued pension liability under U.S. GAAP requires us to make certain assumptions involving primarily the following (weighted-average rates):

	2011		2010
Assumptions Used to Determine the Benefit Obligation at December 31
Discount Rates (A)
Annuity Distributions	4.95	%	5.90	%
Lump-Sum Distributions	3.02	%	4.19	%
Rate of Compensation Increase (B)	3.45	%	3.45	%
Assumptions Used to Determine Net Periodic Benefit Cost
Discount Rate
Annuity Distributions	5.90	%	5.90	%
Lump-Sum Distributions	4.19	%	4.31	%
Expected Long-Term Return on Plan Assets (C)	7.50	%	7.75	%
Rate of Compensation Increase (B)	3.45	%	3.45	%

^(A)  The December 31, 2011 discount rate for annuity distributions was determined by the resulting yield of a hypothetical bond portfolio at December 31, 2011, matched to the expected benefit payments under the plans. Bonds selected for this portfolio had a Moody’s or Standard & Poor’s credit rating of “AA” or better as of December 31, 2011. The December 31, 2011 discount rate for lump-sum distributions is based on yields on 30-year U.S. Treasury bonds.

^(B)  The assumed rate of increase of future compensation levels represents our long-term estimate of such increases on the basis of the composition of plan participants, past results and market expectations.

^(C)  The expected long-term rate of return on plan assets assumption is based on the current level of expected returns on risk free investments (primarily government bonds), the historical level of the risk premium associated with

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the other asset classes in which the portfolio is invested and the expectations for future returns on each asset class. The expected return for each asset class was then weighted based on the target asset allocation to develop the expected long-term rate of return on plan assets assumption for the portfolio.

Since pension benefits may be settled in either a single lump-sum or an annuity distribution, both the estimated percentage of participants electing a lump-sum payment and the assumed interest rate (discount rate) used in computing the lump-sum benefit are key assumptions. We currently estimate that approximately half of the qualified plan participants will elect a lump-sum distribution upon termination. Other key assumptions used in the estimate include primarily those underlying the mortality table, and expected long-term rates for inflation, retirement and withdrawals, all of which are based on plan experience and standard actuarial methods but which are nevertheless subject to uncertainty.

It is likely that the actual return on plan assets and the outcome of other uncertain variables will differ from those used in estimating our pension costs and pension obligation. Furthermore, the company may, from time to time, adjust the asset allocation, which may have an impact on the long-term rate of return on plan assets.

Financial Measures and Sensitivities. The following table summarizes key financial measures and sensitivities to changes in assumptions for the years ended December 31 (in millions):

	2011		2010
Key Financial Measures
Pension Expense	$	9	$	8
Cash Pension Plan Contributions—Qualified Plan	3		4
Cash Grantor Trust Funding—Supplemental Plans	—		1
Current Accrued Pension Liability	4		3
Non-Current Accrued Pension Liability	60		26
Sensitivity to Changes in Key Assumptions
Increase in Pension Expense for Every 0.25 Percentage Point:
Decrease in Long-Term Rate of Return on Plan Assets	$	0.3	$	0.3
Decrease in Weighted-Average Discount Rate	0.6		0.6
Increase in Rate of Increase in Compensation Levels	0.2		0.2
Increase in Qualified Pension Funding (actuarially     computed accumulated benefit obligation) for:
Every 0.25 Percentage Point Decrease in the Weighted-Average Discount Rate	$	4.1	$	3.3
Every 0.25 Percentage Point Decrease in the Weighted-Average Discount Rate Assumption for Lump-Sum Benefits	$	1.4	$	1.3

Assuming an average long-term rate of return on plan assets of 7.50%, and weighted-average discount rates of 4.95% for annuity distributions (and 3.02% for lump-sum distributions) for 2012 and beyond, and a 3.45% rate of increase in compensation levels, we project our annual pension expense for 2012 will be approximately $11 million and will range between $11 million and $12 million each year for 2013 through 2016. In 2012, we expect our cash funding for the qualified pension plan to range between $3 million and $7 million and our cash funding for the supplemental (non-qualified) pension plans to range between $0 and $2 million. Assuming no change to our disclosure assumptions, under our present funding policy and current funding rules for the qualified pension plan we would expect cash contributions to be approximately $10 million each year in 2013 through 2015 and approximately $9 million in 2016. We expect to fund between $0 and $2 million in 2012 to our supplemental (non-qualified) pension plans and approximately $1 million each year for 2013 through 2016.

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Off-Balance Sheet Arrangements, Contractual Obligations, Contingent Liabilities and Commitments

The company has no off-balance sheet debt. Our consolidated financial statements reflect all of the operations and assets and liabilities of the company. The company has an equity investment in an unconsolidated entity, discussed below. Otherwise, the company has no other relationships with unconsolidated entities or financial partnerships, such as entities referred to as structured finance or special purpose entities. The company is not a party to any derivative transactions.

On October 1, 2008, the company contributed 454,000 acres of timberlands located in its Southern Resources Segment to a timberland venture in exchange for an equity interest. The company accounts for its interests under the equity method of accounting. See Notes 16 and 17 of the Notes to Consolidated Financial Statements.

The following table summarizes our contractual obligations at December 31, 2011 (in millions):

			Payment Due by Period
Contractual Obligations	Total		Less Than 1 Year		1-3 Years		3-5 Years		More Than 5 Years
Long-Term Debt (A)	$	2,374	$	426	$	368	$	891	$	689
Note Payable to Timberland Venture (B)	1,187		58		116		116		897
Operating Lease Obligations	12		3		5		3		1
Timber Obligations	6		1		1		—		4
Long-Term Incentive Plans	3		—		3		—		—
Purchase Obligations (C)	370		55		68		45		202
Other Long-Term Liabilities (D)	—		—		—		—		—
Total Contractual Obligations	$	3,952	$	543	$	561	$	1,055	$	1,793

^(A)  In addition to principal, long-term debt includes related interest obligations based on the coupon or stated interest rate for our fixed rate debt and the variable interest rate as of December 31, 2011 of 0.65% for our $350 million term credit agreement. Interest obligations are $73 million (less than one year), $115 million (1-3 years), $78 million (3-5 years), and $114 million (more than 5 years). As we expect borrowings outstanding under our line of credit to vary, only repayment of the principal is included. In 2011, interest expense related to our line of credit was less than $1 million.

^(B)  On October 1, 2008, the company borrowed $783 million from the Timberland Venture (a related party). The annual interest rate on the note payable is fixed at 7.375%. Interest obligations are $58 million (less than one year), $116 million (1-3 years), $116 million (3-5 years), and $114 million (more than 5 years).

^(C)  Purchase obligations are comprised primarily of $230 million for a 15-year agreement for the purchase of urea to be used as fertilizer on our timberlands, $46 million for long-term timber leases, $44 million for timber harvest contracts, $32 million for fiber supply agreements to supply our manufacturing facilities, and approximately $12 million for raw materials (wood fiber) and electricity for our MDF facilities.

^(D)  We have not included any amounts for our other long-term liabilities, as we cannot estimate when we will be obligated to satisfy these liabilities. At December 31, 2011, other long-term liabilities include workers’ compensation of $10 million, deferred compensation obligations of $5 million and non-qualified pension obligations of $36 million (including $4 million classified as a current liability). We expect to fund approximately $2 million for workers’ compensation payments in 2012. We have two grantor trusts, which hold assets associated with our deferred compensation obligations and non-qualified pension obligations. At December 31, 2011, the fair value of assets in one of our grantor trusts is approximately equal to our deferred compensation obligation of $5 million. The December 31, 2011 fair value of assets in the other grantor trust was approximately $31 million and the actuarially computed accumulated benefit obligation for our non-qualified pension plans was $31 million. Assets in our grantor trusts have been reserved for the above obligations. However, grantor trust assets are subject to the claims of creditors in the event of bankruptcy. Additionally, based on current interest rates and

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expected returns, the company expects 2012 contributions to the qualified pension plan to range between $3 million and $7 million and between $0 and $2 million for the supplemental (non-qualified) pension plans. See Notes 10 and 12 of the Notes to Consolidated Financial Statements.

We have not included in the table above our purchase of a timber deed. In December 2011, we signed an agreement to acquire a timber deed in the Southern Resources Segment for $103 million. Concurrent with the execution of this agreement, we paid a $5 million deposit. In January 2012, we completed this acquisition and paid the remaining purchase price of $98 million. The timber deed encompasses approximately 4.7 million tons of standing timber and will be harvested over the eight-year term of the deed.

Events and Trends Affecting Operating Results

Harvest Plans

We determine our annual timber (sawlogs and pulpwood, including stumpage sales) harvesting plans based on a number of factors. At the stand level, ranging in size from 10 to 200 acres, we consider the age, size, density, health and economic maturity of the timber. A stand is a contiguous block of trees of a similar age, species mix or silvicultural regime. At the forest level, ranging in size from 100,000 to almost 1 million acres, we consider the long-term sustainability and environmental impact of certain levels of harvesting, certain external conditions such as supply agreements, and the level of demand for wood within the region. A forest is a broad administrative unit, made up of a large number of stands. Harvest scheduling is the technical approach using computer modeling that considers all of the above factors along with forest growth rates and financial assumptions to project future harvest plans for a number of years forward.

Our actual harvest levels may vary from planned levels due to log demand, sales prices, the availability of timber from other sources, the level of timberland sales and acquisitions, the availability of legal access, abnormal weather conditions, fires and other factors outside of our control. We believe that our harvest plans are sufficiently flexible to permit modification in response to short-term fluctuations in the markets for logs. Furthermore, future harvest levels will be impacted by sales and purchases of timberlands. The impact will depend on the level and extent we are able to reinvest proceeds in productive timberlands and the stocking levels and age class distribution of any newly acquired timberlands.

Harvest levels are also impacted by the purchase of a long-term timber deed. In January 2012, the company acquired approximately 4.7 million tons of standing timber in our Southern Resources segment for a total purchase price of $103 million. We expect to harvest the 4.7 million tons plus the related growth over the eight-year term of the timber deed.

Northern Resources Segment. Harvest levels were 4.0 million tons (58% sawlogs and 42% pulpwood) during 2011 and 4.0 million tons (54% sawlogs and 46% pulpwood) during 2010. In 2012, we expect sawlog harvest volumes to increase by approximately 8% due to favorable export markets, and we expect pulpwood harvest volumes in 2012 to be comparable to 2011 harvest volumes. While the company has flexibility to modify our annual harvest volumes, based on market conditions, we expect harvest levels beyond 2012 in both the near-term and long-term to increase by more than 10% and we expect the product mix (i.e., the percentage of sawlogs vs. pulpwood) to improve to greater than 60% sawlogs compared to 2011 harvest levels.

Southern Resources Segment. Harvest levels were 11.8 million tons (42% sawlogs and 58% pulpwood) during 2011 and 11.5 million tons (44% sawlogs and 56% pulpwood) during 2010. In 2012, we expect sawlog harvest volumes to increase by approximately 20% as a result of the recent purchase of an eight-year timber deed and harvesting volume that was previously deferred. We expect pulpwood harvest volumes in 2012 to be comparable to 2011 harvest volumes. While the company has flexibility to modify our annual harvest volumes, based on market conditions, we expect harvest levels beyond 2012 to be at moderately higher levels over the near-term (next five years) and increase more than 35% over the long-term (ten years and beyond) and we expect the product mix to improve to approximately 50% sawlogs compared to 2011 harvest levels.

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Manufactured Products Segment Production Levels

The results of our Manufactured Products Segment are driven largely by the strength of the U.S. housing market, which began declining in 2007 and has remained very weak. In 2011, housing starts increased 3% from 2010 levels to approximately 600,000 starts, but they remain significantly below historical averages achieved in the previous decade of approximately 1.7 million starts per year. During 2009, we permanently closed two lumber mills, suspended production at one additional lumber mill and one remanufacturing facility and reduced production at another lumber mill. We have also reduced production at our MDF and plywood facilities in response to the decline in demand. During 2011, we continued to operate all of our Manufactured Products facilities at reduced or suspended levels similar to 2010. Until markets for wood products improve, our expected production levels (and sales volumes) will be significantly lower than the combined capacity of our facilities.

Clean Water Act - Ninth Circuit Ruling

In August, 2010, a three judge panel of the U.S. Court of Appeals for the Ninth Circuit ruled in Northwest Environmental Defense Center (NEDC) v.Brown that ditches and culverts associated with “forest roads” were “point sources” under the Clean Water Act (“CWA”) and thus required National Pollution Discharge Elimination System (NPDES) permits should storm water runoff that is channeled and/or conveyed from such sources be discharged into waters of the United States. In May, 2011, the court denied a petition for rehearing, leaving its prior decision in place.  The plaintiff alleged that the defendants violated the CWA by not obtaining EPA permits for stormwater runoff from logging roads into systems of ditches, culverts and channels that is then discharged into forest streams and rivers.  The plaintiff further alleged that timber hauling on logging roads is a major source of sediment that flows through the stormwater collection system. 

This decision overturns a long standing EPA rule that had exempted such sources of runoff from CWA permitting. Since 1976, the EPA has promulgated and amended a regulation specifically exempting from NPDES permitting requirements “point source” silviculture activities such as nursery operations, site preparation, reforestation and subsequent silvicultural treatment, thinning, prescribed burning, pest and fire control, harvesting operations, surface drainage, or road construction and maintenance from which there is “natural runoff” (the Silviculture Rule).  Under the Silviculture Rule, the EPA did not require permitting for discharges from ditches, culverts and channels that collect stormwater runoff from logging roads. Instead, these forestry sources of stormwater runoff are regulated by the states, many of which do so by adopting best management practices.

The outcome of the court's decision is uncertain. A petition for review has been filed with the United States Supreme Court seeking to appeal the decision. After reviewing, the Supreme Court has requested the U.S. Solicitor General seek out and report to the Court the views of several relevant federal agencies, including the EPA, the U.S. Department of Agriculture, the Department of Interior and the Council on Environmental Quality. It is expected that the Supreme Court will decide whether to hear the appeal shortly after receiving this report.

In addition, legislation passed by Congress in late December 2011 prohibits the EPA from implementing the NPDES permitting regime mandated by the Ninth Circuit decision through September 30, 2012.

Should the Ninth Circuit's ruling stand, its impact on the company and the timber industry is unknown. It is unclear whether the EPA would require NPDES permits for forest roads outside of the area covered by the Ninth Circuit. It is also unclear what, if any, additional regulatory restrictions would be imposed by the NPDES permitting process. Further, if logging and other forest management roads and operations currently within the scope of the Silviculture Rule were placed within the NPDES permitting regime, it is possible that CWA "Total Maximum Daily Load" (TMDL) allocations in various stream drainages, "anti-degradation," and other NPDES requirements could be affected. A significant increase in operational and compliance costs for landowners and operators is possible depending upon the regulatory response to the court's decision.

Comparability of Financial Statement Periods

Acquisitions and Divestitures. We have pursued and expect to continue to pursue both the acquisition and divestiture of timberlands to increase the value of our assets. Accordingly, the comparability of periods covered by the company’s financial statements is, and in the future may be, affected by the impact of timberland acquisitions and divestitures.

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The following table summarizes timberland acquisitions and dispositions for each of the past three years, along with our total acres owned at each of the past three year ends (in acres):

	2011	2010	2009
Acquisitions:
Northern Resources	—	—	—
Southern Resources	59,000	—	—
Dispositions
Northern Resources	45,000	142,000	248,000
Southern Resources	140,000	116,000	49,000
Total Ownership at December, 31 (in millions)	6.6	6.8	7.0

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Results of Operations

The following table compares Operating Income (Loss) by Segment and other items impacting our income from continuing operations for the years ended December 31 (in millions):

	2011			2010			2009
Operating Income (Loss) by Segment
Northern Resources	$	24		$	13		$	(3	)
Southern Resources	74			107			81
Real Estate	195			180			278
Manufactured Products	15			24			(23		)
Other	21			23			17
Total Segment Operating Income	329			347			350
Other Costs and Eliminations	(55		)	(51		)	(51		)
Other Unallocated Operating Income (Expense), net	1			1			—
Operating Income	275			297			299
Equity Earnings from Timberland Venture	56			57			55
Interest Expense, net (Debt Obligations to Unrelated Parties)	81			80			89
Interest Expense (Note Payable to Timberland Venture)	58			58			58
Loss on Extinguishment of Debt	—			(13		)	(2		)
Provision (Benefit) for Income Taxes	(1		)	1			(31		)
Income from Continuing Operations	$	193		$	202		$	236

2011 Compared to 2010

Northern Resources Segment.

	Year Ended December 31, 2011			Year Ended December 31, 2010
	Harvest Tons (millions)	Average Sales Realization		Harvest Tons (millions)	Average Sales Realization
Sawlog ($/Ton Delivered)	2.319	$	69	2.134	$	63
Pulpwood ($/Ton Delivered)	1.680	$	41	1.823	$	39
Total	3.999			3.957

Revenues increased by $23 million, or 11%, to $233 million in 2011 compared to 2010. This increase was due primarily to higher sawlog prices ($15 million), higher sawlog harvest volumes ($11 million) and higher pulpwood prices ($4 million), partially offset by lower pulpwood harvest volumes ($5 million).

Sawlog prices were 10% higher in 2011 compared to 2010 due primarily to the increase in demand from China for the export of sawlogs from the Pacific Northwest. The strong export demand has favorably impacted domestic log prices by limiting the supply of domestic sawlogs. Export demand and sawlog prices declined moderately during the fourth quarter of 2011 due to high log inventories and a slowdown in China's economic growth. However, demand and prices remained strong compared to the prior year. Sawlog harvest volumes were 9% higher in 2011 compared to 2010 due primarily to the harvesting of volume that was previously deferred due to weak log prices. A portion of the previously deferred volume was harvested in 2011 to capture favorable export log prices.

Pulpwood prices were 6% higher in 2011 compared to 2010 due primarily to steady demand from paper mills and a reduced supply of wood chips as a result of lower regional lumber production. Pulpwood harvest volumes were 8% lower due primarily to accelerating pulpwood harvest volume in prior years to take advantage of favorable log prices.

Sawlog harvest volumes in 2012 are expected to increase by approximately 8% as we restore harvest volume to

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normal levels in anticipation of continued favorable export markets. Pulpwood harvest volumes in 2012 are expected to be comparable to 2011 harvest volume.

Northern Resources Segment operating income was 10% of its revenues for 2011 and 6% of its revenues for 2010. This increase was due primarily to higher sawlog prices. Segment costs and expenses increased by $12 million, or 6%, to $209 million for 2011 due primarily to an increase in the log and haul rate per ton. On a per ton basis, costs increased 11% ($13 million) in 2011 compared to 2010 due primarily to more expensive harvesting methods, longer hauling distances, and higher fuel costs. During 2010, we primarily harvested from stands with below average logging and hauling costs due to weak log prices.

Southern Resources Segment.

	Year Ended December 31, 2011			Year Ended December 31, 2010
	Harvest Tons (millions)	Average Sales Realization		Harvest Tons (millions)	Average Sales Realization
Sawlog ($/Ton Stumpage)	4.969	$	19	5.021	$	23
Pulpwood ($/Ton Stumpage)	6.822	$	9	6.446	$	12
Total	11.791			11.467

Revenues decreased by $18 million, or 5%, to $359 million in 2011 compared to 2010. This decrease was due primarily to lower pulpwood prices ($14 million), lower sawlog prices ($9 million) and lower sawlog harvest volumes ($3 million), partially offset by higher pulpwood harvest volumes ($10 million).

Pulpwood prices were 22% lower on a stumpage basis (8% lower on a delivered basis) in 2011 compared to 2010. This decrease was due primarily to unusually dry harvesting conditions for most of 2011 compared to unusually wet harvesting conditions in 2010. Also, in the prior year pulpwood markets were impacted by the temporary supply-chain disruption resulting from the February 2010 earthquake in Chile.

Sawlog prices were 14% lower on a stumpage basis (6% lower on a delivered basis) in 2011 compared to 2010. This decrease was due primarily to an ample supply of logs as a result of favorable harvesting conditions, weak demand and, to a lesser extent, selling a greater proportion of smaller diameter sawlogs. The demand for sawlogs remained weak throughout 2011 due primarily to near record low housing starts as a result of falling home prices, a sluggish U.S. economy and high unemployment.

Pulpwood harvest volumes were 6% higher in 2011 compared to 2010 and sawlog harvest volumes were 1% lower due primarily to relatively stronger pulpwood prices. While both pulpwood and sawlog prices were weak during 2011, pulpwood prices were relatively more favorable than sawlog prices.

Sawlog harvest volumes in 2012 are expected to increase by approximately 20% due to the recent purchase of a timber deed and harvesting of previously deferred volume. Approximately 0.7 million tons are expected to be harvested in 2012 as a result of the timber deed, of which 0.5 million tons will be sawlogs. In January 2012, we purchased a timber deed containing approximately 4.7 million tons of standing timber which we expect to harvest over the next eight years. Pulpwood harvest volumes in 2012 are expected to be comparable to 2011 harvest volume.

Southern Resources operating income was 21% of its revenues for 2011 and 28% of its revenues for 2010. This decrease was due primarily to lower sawlog and pulpwood prices and higher log and haul costs. Segment costs and expenses increased by $15 million, or 6%, to $285 million due primarily to an increase in the cost of fuel. Log and haul costs on a per ton basis increased 7% ($11 million) in 2011 compared to 2010.

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Real Estate Segment.

	Year Ended December 31, 2011					Year Ended December 31, 2010
Property	Acres Sold	Revenues (millions)		Revenue per Acre		Acres Sold	Revenues (millions)		Revenue per Acre
Small Non-Strategic	22,165	$	27	$	1,220	63,235	$	61	$	970
Large Non-Strategic	48,450	103		2,115		24,310	32		1,320
Conservation	67,425	70		1,050		116,105	122		1,050
Higher and Better Use / Recreational	47,295	96		2,015		53,265	114		2,140
Development Properties	20	—		6,405		845	3		3,415
Conservation Easements	n/a	5		460		n/a	4		455
Total	185,355	$	301			257,760	$	336

Revenues decreased by $35 million to $301 million in 2011. This decrease is due primarily to lower revenues from sales of conservation properties ($52 million), small non-strategic properties ($34 million) and higher and better use / recreational properties ($18 million), offset in part by an increase in revenue from the sale of large non-strategic properties ($71 million).

Revenues from the sale of conservation properties decreased as a result of selling fewer acres. Conservation properties sold during 2011 consisted primarily of two sales totaling approximately 57,000 acres in Florida, Arkansas, and Louisiana. In comparison, during 2010 we sold approximately 70,000 acres in the third and final phase of a 310,000 acre multi-year conservation sale in Montana and approximately 35,000 acres from two conservation properties in Wisconsin and Arkansas. Conservation sales vary significantly from period to period and are primarily impacted by government and not-for-profit funding, the limited number of conservation buyers, and the timing of our transactions. Additionally, the price per acre for conservation properties can vary significantly due to the geographic location and the rationale for the conservation designation.

The decrease in small non-strategic acres sold during 2011 compared to 2010 was due primarily to an unusually large sale during the first quarter of 2010 when a collection of approximately 23,000 acres were sold to a single buyer.

Revenues from our higher and better use / recreational land sales decreased due primarily to selling approximately 6,000 (or 11%) fewer acres and to a lesser extent from a 5% lower average price per acre compared to sales in 2010. Demand for higher and better use / recreational properties (especially our higher value properties) remains weak due to concerns over near-term real estate values, low consumer confidence, and the inability of buyers to secure debt financing.

Revenue from the sale of large non-strategic timberlands was $103 million in 2011 compared to $32 million in 2010. The company took advantage of favorable demand for large parcels of commercial timberlands and increased the sale of large non-strategic properties.

The timing of real estate sales is a function of many factors, including the general state of the economy, demand in local real estate markets, the ability to obtain entitlements, the ability of buyers to obtain financing, the number of competing properties listed for sale, the seasonal nature of sales (particularly in the northern states), the plans of adjacent landowners, our expectation of future price appreciation, the timing of harvesting activities, and the availability of government and not-for-profit funding (especially for conservation sales). Also, in any period the sales average will vary based on the location and physical characteristics of the parcels sold.

At December 31, 2011, the company owned approximately 6.6 million acres of timberlands. Included in the 6.6 million acres are approximately 900,000 acres of higher value timberlands which are expected to be sold over the next fifteen years and 300,000 acres of non-strategic timberlands which are expected to be sold in smaller acreage transactions over the near and medium term (“small non-strategic”). Not included in the above 900,000 higher value acres and 300,000 small non-strategic acres are other acres that are expected to be sold in large acreage transactions to commercial timberland buyers as opportunities arise (“large non-strategic”). We expect revenue from real estate sales during 2012 to range between $275 million and $325 million. We expect an increased proportion of our 2012 revenue

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for real estate sales to come from the sale of large non-strategic acres.

The Real Estate Segment operating income as a percent of revenue was 65% for the year ended December 31, 2011 compared to 54% for 2010. This increase is due primarily to selling large and small non-strategic acres at a higher price per acre in 2011 compared to 2010 and a low operating margin for the large conservation sale in Montana during the fourth quarter of 2010. Real Estate Segment costs and expenses decreased by $50 million to $106 million in 2011 due primarily to selling fewer acres. For 2012, we expect operating income as a percent of revenue to be lower, at approximately 45% of segment revenue, due to selling properties with a higher book value.

Manufactured Products Segment.

	Year Ended December 31, 2011			Year Ended December 31, 2010
	Sales Volume	Average Sales Realization (A)		Sales Volume	Average Sales Realization (A)
Lumber	115,925 MBF	$	518	116,090 MBF	$	507
Plywood	172,433 MSF	$	379	172,716 MSF	$	378
MDF	160,144 MSF	$	608	157,017 MSF	$	606

^(A)  Represents product prices at the mill level.

Revenues increased by $8 million, or 3%, to $273 million in 2011 compared to 2010. This increase was due primarily to higher freight charges ($3 million), higher MDF sales volume ($2 million), and higher lumber prices ($1 million). Freight charges are included in both Revenues and Costs of Goods Sold. The Manufactured Products Segment continues to be impacted by weakness in the U.S. housing market and very low levels of demand for wood products.

Manufactured Products Segment operating income was 5% of its revenues for 2011 compared to 9% of its revenues for 2010. This decrease in operating performance was due primarily to increased manufacturing costs and a gain from the sale of certain lumber manufacturing assets during 2010. The $2 million gain on sale is included in Other Operating Income (Expense), net in the Consolidated Statements of Income for 2010. Manufactured Products Segment costs and expenses increased by $17 million, or 7%, to $258 million for 2011 due primarily to higher raw materials costs ($7 million) and increased freight charges ($3 million). For 2011, higher raw materials costs consisted mostly of higher resin costs at MDF ($4 million), higher costs of operating supplies to produce specialty plywood products ($2 million) and higher log costs ($1 million). We continue to operate our manufacturing facilities at a reduced capacity.

Other Segment. Operating income decreased $2 million to $21 million in 2011 compared to 2010 due primarily to a $5 million operating gain in connection with the termination of a land lease (primarily for the release of mineral rights) in 2010. Partially offsetting the decrease in operating income was a payment of $2 million that we received during 2011 for the settlement of a dispute that related to certain mineral rights. The $2 million and $5 million gains are recorded in our Other Segment and reported as Other Operating Income (Expense), net in our Consolidated Statements of Income. See Note 19 of the Notes to Consolidated Financial Statements.

Other Costs and Eliminations. Other costs and eliminations (which consists of corporate overhead and intercompany profit elimination) decreased operating income by $54 million during 2011 compared to $50 million during 2010. The increase of $4 million was due primarily to higher share-based compensation costs ($3 million) and higher legal and regulatory compliance costs ($2 million).

The increase in share-based compensation expense is due primarily to fair value adjustments. We adjust the fair value of our liability associated with our value management plan quarterly based on our relative total shareholder return compared to the performance of several peer groups. See Note 13 of the Notes to Consolidated Financial Statements.

Selling, General and Administrative Expenses. Corporate overhead costs along with Segment specific selling, general, and administrative costs are reported in total on our Consolidated Statements of Income and decreased operating income by $106 million in 2011 compared to $95 million in 2010. This increase in expense of $11 million was due primarily to a large charitable contribution we made to a forest conservation fund ($5 million) in 2011, higher compensation expenses ($2 million) and higher legal and regulatory compliance costs ($2 million).

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Interest Expense, net. Interest expense, net of interest income, was $139 million in 2011. This was essentially flat compared to 2010.

Provision (Benefit) for Income Taxes. The benefit for income taxes was $1 million for 2011 compared to a provision for income taxes of $1 million in 2010. This decrease in tax expense of $2 million was due primarily to a $9 million decrease in operating income from our manufacturing business during 2011 compared to 2010 (resulting in lower tax expense of $4 million), offset in part by a $3 million valuation allowance recorded during 2011. The valuation allowance is related to certain state net operating loss carryforwards and other associated deferred tax assets for which we do not believe it is more likely than not they will be realized in future periods.

Our determination of the realization of deferred tax assets is based upon management's judgment of various future events and uncertainties, including the timing, nature and amount of future taxable income earned by certain wholly-owned subsidiaries. A valuation allowance is recognized if management believes it is more likely than not that some portion, or all, of the deferred tax asset will not be realized. At December 31, 2011, we have recorded deferred tax assets of $62 million (net of a $3 million valuation allowance) and deferred tax liabilities of $39 million. Management believes that due to the reversal of various taxable temporary differences and/or the planned execution of prudent and feasible tax planning strategies, sufficient taxable income can be generated to utilize the company's remaining deferred tax assets for which a valuation allowance was determined to be unnecessary.

2010 COMPARED TO 2009

Northern Resources Segment.

	Year Ended December 31, 2010			Year Ended December 31, 2009
	Harvest Tons (millions)	Average Sales Realization		Harvest Tons (millions)	Average Sales Realization
Sawlog ($/Ton Delivered)	2.134	$	63	2.137	$	55
Pulpwood ($/Ton Delivered)	1.823	$	39	2.268	$	40
Total	3.957			4.405

Revenues decreased by $2 million to $210 million in 2010. Revenues were slightly lower compared to 2009 as higher sawlog prices ($18 million) were offset by lower pulpwood volumes ($18 million) and lower pulpwood prices ($2 million). Sawlog prices were 15% higher in 2010 compared to 2009. The increase was due primarily to improvement in demand during the spring building season as a result of low mill log inventories and improving lumber and plywood prices. Additionally, sawlog prices in the Northwestern U.S. have also been favorably impacted by increased lumber production compared to 2009 and improved export demand for sawlogs (primarily from China). However, sawlog prices remained relatively weak during most of 2010 due to near record low housing starts as a result of an excess supply of homes for sale and high unemployment.

Pulpwood harvest volumes were 20% lower due primarily to temporary increases in harvest levels in prior years to capture favorable pulpwood prices. In 2010 and 2009, we deferred a portion of the sawlog harvest in Oregon due to weak demand and prices.

Northern Resources Segment operating income was $13 million for 2010 compared to an operating loss of $3 million in 2009. This increase of $16 million was due primarily to higher sawlog prices. Segment costs and expenses decreased by $18 million, or 8%, to $197 million due primarily to lower harvest volumes and lower forest management and administrative expenses. Various forest management and administrative expenses have decreased by 14% ($4 million) due primarily to cost reduction initiatives and timberland dispositions.

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Southern Resources Segment.

	Year Ended December 31, 2010			Year Ended December 31, 2009
	Harvest Tons (millions)	Average Sales Realization		Harvest Tons (millions)	Average Sales Realization
Sawlog ($/Ton Stumpage)	5.021	$	23	4.402	$	22
Pulpwood ($/Ton Stumpage)	6.446	$	12	6.999	$	10
Total	11.467			11.401

Revenues increased by $30 million, or 9%, to $377 million in 2010 compared to 2009. This increase was due primarily to higher sawlog harvest volumes ($22 million), higher pulpwood prices ($15 million), and higher sawlog prices ($3 million), partially offset by lower pulpwood harvest volumes ($13 million). Sawlog harvest volumes increased by approximately 600,000 tons, or 14%, and pulpwood harvest volumes decreased by approximately 600,000 tons, or 8%, compared to 2009 due primarily to a shift in standing inventory. During the past several years, we have concentrated on thinning young timber stands (i.e. first thinnings) to maintain vigorous growth rates and to capture favorable pulpwood prices. The timber harvested from these first thinnings was predominately pulpwood. During 2010, a greater proportion of harvest volume was from more mature timber stands that contained both pulpwood and small diameter sawlogs.

Pulpwood prices were 16% higher on a stumpage basis (11% higher on a delivered basis) during 2010 compared to the prior year due primarily to a temporary shortage of logs and improved demand. Throughout most of the U.S. South, pulpwood was in short supply during the first half of 2010 due to extremely wet weather conditions. However, as a result of our extensive ownership, we were able to deliver logs when other timberland owners had to curtail log production. During 2010, the demand for pulpwood remained favorable due primarily to the improvement in global economic conditions, a reduced supply of wood chips from solid wood products manufacturers, and the temporary supply-chain disruption of market pulp as a result of the February 2010 earthquake in Chile. Nevertheless, pulpwood prices during the fourth quarter of 2010 declined to $10 per ton; the same average sales price realized during the fourth quarter of 2009 due to favorable harvesting conditions (dry weather) and high mill log inventories. Sawlog prices were generally weak during most of 2010 due to near record low housing starts as a result of an excess supply of homes for sale and high unemployment.

Southern Resources Segment operating income was 28% of its revenues for 2010 and 23% for 2009. This increase was due primarily to higher pulpwood prices and higher sawlog volumes. Segment costs and expenses increased by $4 million, or 2%, to $270 million.

Real Estate Segment.

	Year Ended December 31, 2010					Year Ended December 31, 2009
Property	Acres Sold	Revenues (millions)		Revenue per Acre		Acres Sold	Revenues (millions)		Revenue per Acre
Small Non-Strategic	63,235	$	61	$	970	19,620	$	19	$	950
Large Non-Strategic	24,310	32		1,320		59,160	38		650
Conservation	116,105	122		1,050		165,855	280		1,690
Higher and Better Use / Recreational	53,265	114		2,140		50,275	112		2,235
Development Properties	845	3		3,415		2,060	12		5,520
Conservation Easements		4		455			—
Subtotal	257,760	336				296,970	461
Revenue from Non-Cash Exchange	—	—		—		20,600	25		1,205
Total	257,760	$	336			317,570	$	486

Revenues decreased by $150 million to $336 million in 2010. This decrease was due primarily to lower revenues from sales of conservation properties ($158 million) and revenue realized on a non-cash exchange valued at $25 million in

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2009, offset in part by an increase in the number of acres of small non-strategic land sales ($42 million).

Revenues from the sale of conservation properties decreased due primarily to selling fewer acres associated with a three phase transaction in Montana. The third phase of approximately 70,000 acres in Montana closed during 2010 for approximately $89 million. The second phase was during 2009 for approximately 112,000 acres in Montana for $250 million. The first phase was during 2008 and conveyed approximately 130,000 acres in Montana for $150 million. Conservation sales vary significantly from period to period and are primarily impacted by government and not-for-profit funding, the limited number of conservation buyers, and the timing of our transactions. Additionally, the price per acre for conservation properties can vary significantly due to the geographic location and the rationale for the conservation designation.

The increase in small non-strategic acres sold during 2010 compared to 2009 was due primarily to an unusually large sale during 2010 when a collection of approximately 23,000 acres were sold to a single buyer.

We may dispose of large blocks of timberlands to maximize value (“large non-strategic”) such as the 24,000 acres we sold during 2010 in Louisiana for $32 million and nearly 60,000 acres in Wisconsin we sold during 2009 for $38 million. Additionally, during 2009, we completed a non-cash exchange of land with the State of Washington. We recognized $25 million of revenue which represents the fair value of the lands we received. No operating income was recognized for the transaction as the book value of the timberlands we disposed of approximated the exchange value of $25 million.

Revenues from higher and better use / recreational land sales were generally comparable between 2010 and the prior year. However, average sales realization decreased by 4% due primarily to our continued focus on selling lower valued recreational properties. The demand for higher valued recreational properties remained weak due to concern over near-term real estate values, low consumer confidence, and the inability of buyers to secure debt financing.

The timing of real estate sales is a function of many factors, including the general state of the economy, demand in local real estate markets, the ability to obtain entitlements, the ability of buyers to obtain financing, the number of competing properties listed for sale, the seasonal nature of sales (particularly in the northern states), the plans of adjacent landowners, our expectation of future price appreciation, the timing of harvesting activities, and the availability of government and not-for-profit funding (especially for conservation sales). Also, in any period the sales average will vary based on the location and physical characteristics of the parcels sold.

The Real Estate Segment operating income as a percent of revenue was 54% for the period ended December 31, 2010 compared to 57% for the same period in 2009. Real Estate Segment costs and expenses decreased by $52 million to $156 million in 2010 due primarily to selling fewer acres.

Manufactured Products Segment.

	Year Ended December 31, 2010			Year Ended December 31, 2009
	Sales Volume	Average  Sales Realization (A)		Sales Volume	Average Sales Realization (A)
Lumber	116,090 MBF	$	507	164,512 MBF	$	397
Plywood	172,716 MSF	$	378	154,918 MSF	$	357
MDF	157,017 MSF	$	606	132,092 MSF	$	597

^(A)  Represents product prices at the mill level.

Revenues increased by $20 million, or 8%, to $265 million in 2010. This increase was due primarily to higher MDF sales volume ($16 million), higher lumber prices ($8 million), and higher plywood sales volume ($7 million), offset in part by lower lumber sales volume ($13 million).

MDF sales volume increased by 19% in 2010 compared to 2009 due primarily to increased demand. During 2010, when seasonal demand in the U.S. was increasing, the global supply of MDF was temporarily disrupted due to the February 2010 earthquake in Chile. In addition, the weaker U.S. dollar reduced MDF imports to the U.S.

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Lumber sales prices were 28% higher during 2010 due primarily to limited supply, a temporary increase in demand and the closure and curtailment of our mills in 2009, which generally sold a lower-value product. The supply of lumber was constrained due to extensive mill curtailments and weather-related log shortages, primarily during the first half of 2010. The temporary improvement in demand was primarily due to the restocking of lumber inventories in anticipation of the 2010 spring building season. Lumber prices peaked during the second quarter of 2010 but declined during the remainder of 2010 as demand for housing remained weak. U.S. housing starts were 588,000 for all of 2010, a 6% increase from the 554,000 starts in 2009 (a record low since 1945). Additionally, repair and remodel activity in the U.S. improved modestly during 2010 (3%), but still remained over 20% below peak levels in the prior decade. Lumber sales volume declined 29% during 2010 due primarily to curtailed production. During 2009, we permanently closed two lumber mills and suspended production at two other lumber mills as a result of historically low housing starts.

Plywood sales volume was 12% higher during 2010 due primarily to increased demand. The supply of plywood was temporarily constrained in 2010 due to a decline in imports as a result of the impact of the February 2010 earthquake in Chile.

Manufactured Products Segment operating income was $24 million for 2010 compared to an operating loss of $23 million for 2009. This increase in operating performance was due primarily to impairments, write-downs, severance and pension settlement charges recorded in 2009 ($20 million), improved product prices, primarily lumber, and various cost-saving initiatives ($4 million). During 2009, we recorded a lumber mill impairment ($10 million), a related write-down of spare parts ($2 million), a write-down of mill inventories ($2 million), severance charges ($2 million), and pension settlement charges ($4 million).

Manufactured Products Segment costs and expenses decreased by $27 million, or 10%, to $241 million for 2010 due primarily to no impairments, write-downs, severance charges, or pension settlement charges, lower lumber production in 2010, and various cost-saving initiatives, offset in part by higher MDF sales volume.

Other Segment. Operating income increased $6 million to $23 million in 2010 due primarily to a $5 million operating gain in connection with the termination of a land lease in 2010. The $5 million was recorded in our Other Segment since the consideration was primarily for the release of mineral rights and is reported as Other Operating Income (Expense), net in our Consolidated Statements of Income.

During the first quarter of 2010, we received cash proceeds of $21 million for the sale of an undivided 50% interest in mineral rights (natural gas reserves on properties located in West Virginia) and to amend an agreement covering existing exploration rights. We allocated $11 million to the sale of mineral rights and $10 million to the modification of exploration rights. The sale of mineral rights is reported as Gain on Sale of Properties, net of tax in our Consolidated Statements of Income and was not included in the Other Segment’s operating income. The remaining consideration of $10 million related to the modified exploration rights, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term.

Other Costs and Eliminations. Other costs and eliminations (consisting of corporate overhead and intercompany profit elimination) decreased operating income by $51 million in both 2010 and 2009.

Selling, General and Administrative Expenses. Corporate overhead costs along with Segment specific selling, general, and administrative costs are reported in total on our Consolidated Statements of Income and decreased operating income by $95 million in 2010 and by $106 million in 2009. This decrease in expense of $11 million was due primarily to lower share-based compensation expense ($7 million) and lower severance charges ($4 million). The decrease in share-based compensation expense was due to a decrease in the fair value of our value management plan awards in 2010. We adjust the fair value of our liability associated with our value management plan quarterly based on our relative total shareholder return compared to the performance of several peer groups.

Interest Expense, net. Interest expense, net of interest income, decreased $9 million, or 6%, to $138 million in 2010. This decrease was due primarily to debt retirements, including both maturing borrowings and prepayments, of Senior Notes (fixed rate debt) in 2009 and 2010. While these retirements reduced average outstanding debt levels in 2010 compared to 2009, a portion of the retirements were refinanced with our line of credit at significantly lower interest rates. Interest expense for both periods included $58 million related to our Note Payable to Timberland Venture.

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In November 2010, we issued $575 million aggregate principal amount of 4.70% Senior Notes. With the proceeds from this borrowing, we prepaid Senior Notes (with higher interest rates) that were scheduled to mature in 2011, retired our $250 million term credit agreement (scheduled to mature in 2012), and reduced outstanding borrowings on our line of credit.

Gain (Loss) on Extinguishment of Debt. In 2010, we made prepayments of approximately $226 million to retire $213 million of principal for debt due in 2011. These prepayments were at a premium and as a result, we recognized a loss in 2010 of $13 million. In 2009, we made debt principal prepayments at a slight premium resulting in a $2 million loss.

Provision (Benefit) for Income Taxes. The provision for income taxes was $1 million for 2010 compared to a benefit for income taxes of $31 million for 2009. The decrease in the tax benefit of $32 million is due primarily to improved results in our manufacturing business which increased operating income by $47 million during 2010 compared to 2009 (resulting in $19 million higher tax expense in 2010). Additionally, in 2009, we recorded a tax benefit related to the reversal of $5 million of previously accrued built-in gains tax and a reduction to our deferred tax liability of $3 million, compared to a reduction to our deferred tax liability of $1 million during 2010.

Gain on Sale of Properties, net of tax. During 2010, we sold an undivided 50% interest in mineral rights (natural gas reserves) on properties located in West Virginia for $11 million. See Other Segment above for detailed discussion of the transaction.

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Financial Condition and Liquidity

Our cash flows from operations are impacted by the cyclical nature of the forest products industry and by general economic conditions in the United States, including interest rate levels and availability of financing. We generate cash primarily from sales of delivered logs and standing timber, sales of our finished manufactured wood products, and sales of our timberlands. Our principal cash requirements are primarily for:

• expenditures for logging and hauling of logs,

• employee compensation and related benefits,

• purchases of logs, fiber and other raw materials used in our manufacturing facilities,

• reforestation, silviculture, road construction and road maintenance on our timberlands, and

• energy and operating expenditures to run our manufacturing facilities.

Our Resources and Manufactured Products Segments have significant uses of cash, and as a result our operating income (excluding depletion and depreciation) approximates the Segment’s operating cash flow. In contrast, our cash outflows in our Real Estate and Other Segments are very small, and as a result our revenues from those Segments approximate operating cash flows. In our Other Segment, cash may be received in upfront payments, such as lease bonuses, but revenues will be recognized over several reporting periods (quarters or years). We have summarized our sources and uses of cash in a table later in this section.

During 2011, our operating results and cash flow continued to be negatively impacted by the weak housing market. This trend is expected to continue in 2012 due to the near record low housing starts, the weak U.S. economy, high unemployment, low consumer confidence and tight lending standards. During 2011, we generated $374 million of cash from operating activities. Despite anticipated improved cash flow as a result of higher sawlog harvest volumes and prices, we expect cash provided by operating activities in 2012 to decline due to using $98 million of cash for the purchase of an eight-year timber deed.

We expect our cash balance to improve approximately $50 million during 2012 due to anticipated higher sawlog volumes and prices, and also due to financing the purchase of the timber deed. As a result, we expect more than adequate cash to fund our current dividend (approximately $271 million) and planned capital expenditures (approximately $80 million). We ended 2011 with a strong balance sheet; we had a cash balance of $254 million and availability on our line of credit of $250 million. We have scheduled debt principal payments of $353 million in 2012 and $174 million in January 2013. We plan on refinancing these debt obligations at favorable interest rates.

Cash Flow

The following table summarizes total cash flows for operating, investing and financing activities for the years ended December 31 (in millions):

	2011			2010			2009
Net Cash Provided By Operating Activities	$	374		$	449		$	540
Net Cash Used In Investing Activities	(171		)	(58		)	(64		)
Net Cash Used In Financing Activities	(201		)	(438		)	(546		)
Change in Cash and Cash Equivalents	$	2		$	(47	)	$	(70	)

Cash Flows from Operating Activities. Net cash provided by operating activities for the year ended December 31, 2011 totaled $374 million compared to $449 million in 2010. This decrease of $75 million is due primarily to a combined $32 million decrease in operating income from both of our Resources Segments and our Manufactured Products Segment, net lower proceeds from real estate sales of $29 million, and a $13 million Federal income tax refund received in 2010. See Results of Operations for a discussion of the factors impacting operating income for our Resources and Manufactured Products Segments and factors impacting real estate proceeds for our Real Estate Segment.

In 2010, we received a $13 million Federal income tax refund as a result of the Worker, Homeownership and Business Assistance Act of 2009, which allowed our taxable REIT subsidiaries to carry back net operating losses and amend previously filed tax returns. During 2011, we received less than $1 million in Federal income tax refunds.

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Net Cash provided by operating activities for the year ended December 31, 2010 totaled $449 million, compared to $540 million in 2009. This decrease of $91 million from 2009 is due primarily to net lower proceeds from real estate sales of $122 million and a $65 million change in working capital, offset in part by a combined $80 million increase in operating income from our Resources Segments and our Manufactured Products Segment (net of a 2009 $10 million non-cash impairment charge) and a lease bonus we received of $10 million from a modification of certain gas exploration rights.

The net lower proceeds from real estate sales of $122 million in 2010 was due primarily to the $250 million of proceeds received during 2009 from the closing of the second phase of the three phase transaction, partially offset by the $89 million of proceeds received during 2010 for the closing of the third phase of the three phase transaction. Further offsetting the lower proceeds were increased small non-strategic sales in 2010 of $44 million.

The change in working capital of $65 million, which decreased from 2009, is primarily due to proceeds we received from a like-kind exchange escrow account in 2009. Proceeds associated with a like-kind exchange are either reinvested in like-kind property within 180 days or distributed to the company at the end of either the 45-day identification period or the 180-day reinvestment period. There were no proceeds in a forward like-kind exchange account at either December 31, 2010 or December 31, 2009. However, during 2009, we received proceeds of $48 million from our like-kind exchange escrow account related to transactions entered into during 2008.

During the first quarter of 2010, we received proceeds of $10 million for a lease modification for gas exploration rights that were originally granted in 2008. The $10 million is being amortized into revenue over the three-year exploration term.

Timber Deed Acquisition. In January 2012, the company purchased a timber deed in the Southern Resources Segment for $103 million, $5 million of which was paid as a deposit in December 2011. The timber deed encompasses approximately 4.7 million tons of standing timber and will be harvested over the eight-year term of the deed. The timber deed purchase price has been and will be reflected in our Consolidated Statements of Cash Flows as an outflow under Cash Provided by Operating Activities.

Capital Expenditures. Capital expenditures were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Capital Expenditures (Excluding Timberland Acquisitions)	$	70	$	71	$	61
Expenditures for Real Estate Development	3		2		1
Total Capital Expenditures	$	73	$	73	$	62

Planned capital expenditures for 2012 (excluding timberland and mineral acquisitions) are expected to be approximately $80 million and include approximately $65 million for our timberlands, $4 million for our manufacturing facilities, $5 million for real estate development investments, and $6 million for investments in information technology. The timberland expenditures are primarily for reforestation and other expenditures associated with the planting and growing of trees. Approximately 55% of planned capital expenditures in 2012 are discretionary, primarily expenditures for silviculture. Capital expenditures at our manufacturing facilities consist primarily of expenditures to sustain operating activities.

Timberland Acquisitions. During 2011, the company acquired 59,000 acres of timberlands primarily located in Alabama and Georgia and mineral reserves in Oregon for a total of $101 million. These purchases were financed primarily from our line of credit and have been accounted for as asset acquisitions. There were no significant timberland acquisitions in 2010 or 2009.

Future Cash Requirements.  Cash required to meet our future financial needs will be significant.  In 2012, we have $353 million of scheduled debt principal payments. Additionally, in January 2013, we have a $174 million scheduled debt principal payment. We expect to refinance these debt obligations prior to maturity at favorable rates. Furthermore, we believe that our cash flows from continuing operations and current cash on hand will be sufficient to fund 2012 planned capital expenditures, interest payments on our indebtedness and our dividend.

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Sources and Uses of Cash.  The following table summarizes our sources and uses of cash for the years ended December 31 (in millions):

	2011			2010			2009
Sources of Cash:
Operations (A)	$	337		$	402		$	437
Changes in Working Capital	(8		)	(4		)	61
Cash Distributions from Timberland Venture	56			57			53
Cash from Stock Option Exercises	10			2			—
Cash from Sale of Properties and Other Assets	—			13			1
Increase Debt Obligations, net	87			—			—
Other Cash Changes, net (B)	—			2			—
Total Sources of Cash	482			472			552
Uses of Cash:
Returned to Stockholders:
Dividends	(272		)	(272		)	(275		)
Common Stock Repurchases	(26		)	(51		)	(87		)
Reinvest in the Business:
Timber Deed Acquired	(5		)	—			—
Capital Expenditures, including Real Estate Development (C)	(73		)	(73		)	(62		)
Timberlands and Minerals Acquired	(101		)	—			(1		)
Meet our Pension Obligations:
Pension Contributions	(3		)	(4		)	(10		)
Purchases of Marketable Securities	—			(2		)	(3		)
Reduce Debt Obligations, net	—			(117		)	(184		)
Total Uses of Cash	(480		)	(519		)	(622		)
Change in Cash and Cash Equivalents	$	2		$	(47	)	$	(70	)

^(A)  Calculated from the Consolidated Statements of Cash Flows by adding Depreciation, Depletion and Amortization, Basis of Real Estate Sold, Equity Earnings from Timberland Venture, Gain on Sales of Properties and Other Assets, (Gain) Loss on Extinguishment of Debt, Deferred Revenue from Long-Term Gas Leases (Net of Amortization), Deferred Income Taxes and Other Operating Activities (excluding Expenditures for Real Estate Development - see discussion in Footnote B below) to Net Income.

^(B)  From the Consolidated Statements of Cash Flows, Other Investing Activities.

^(C)  See Capital Expenditures section above for calculation. Expenditures for Real Estate Development are included in Other Operating Activities, net.

Borrowings

Debt Financing. We strive to maintain a balance sheet that provides the financial flexibility to pursue our strategic objectives. In order to maintain this financial flexibility, our objective is to maintain an investment grade credit rating. This is reflected in our moderate use of debt, established access to credit markets and no material covenant restrictions in our debt agreements that would prevent us from prudently using debt capital. All of our borrowings, except for the Note Payable to Timberland Venture, are made by Plum Creek Timberlands, L.P., the company's wholly-owned operating partnership (“the Partnership”). Furthermore, all of the outstanding indebtedness of the Partnership is unsecured.

Line of Credit. We have a $600 million revolving line of credit agreement that matures January 30, 2015. As of December 31, 2011, the weighted-average interest rate for the borrowings on the line of credit was 1.71%. The interest rate on the line of credit is based on LIBOR plus 1.50%. This rate can range from LIBOR plus 1.275% to LIBOR plus 2% depending on our debt ratings. In addition to interest expense on outstanding borrowings, we pay an annual facility

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fee equal to 0.25% that can vary depending on debt rating. Facility fees were $2 million in 2011 and $1 million in 2010. Subject to customary covenants, the line of credit allows for borrowings from time to time up to $600 million, including up to $100 million of standby letters of credit. Borrowings on the line of credit fluctuate daily based on cash needs. As of December 31, 2011, we had $348 million of borrowings and $2 million of standby letters of credit outstanding; $250 million remained available for borrowing under our line of credit. As of January 3, 2012, $251 million of the borrowings under our line of credit was repaid.

Term Credit Agreement. The company has a $350 million term credit agreement that matures July 10, 2012. As of December 31, 2011, the interest rate for the term credit agreement was 0.65%. The interest rate is based on LIBOR plus 0.375%. This rate can range from LIBOR plus 0.3% to LIBOR plus 1.15% depending on our debt ratings. The term credit agreement is subject to covenants that are substantially the same as those of the line of credit. The agreement allows for prepayment of the borrowings at any time prior to the maturity date without premium or penalty.

Senior Notes. The company has outstanding Senior Notes with various maturities and fixed interest rates. As of December 31, 2011, the company had $263 million aggregate principal amount of Senior Notes outstanding that are privately placed borrowings with various lenders (“Private Debt”). The Private Debt matures serially through 2016.

As of December 31, 2011, the company had publicly issued and outstanding $1.0 billion aggregate principal amount of Senior Notes (“Public Debt”). The Public Debt consists of $575 million aggregate principal amount of 4.70% Public Debt which matures in 2021 and 5.875% Public Debt with an aggregate principal amount of $458 million which matures in 2015. The Public Debt is issued by the Partnership and is fully and unconditionally guaranteed by Plum Creek Timber Company, Inc.

The Senior Notes are redeemable prior to maturity; however, they are subject to a premium on redemption, which is based upon interest rates of U.S. Treasury securities having similar average maturities. The premium that would have been due upon early retirement approximated $237 million at December 31, 2011 and $164 million at December 31, 2010.

The Public Debt is structurally subordinated to all debt and liabilities of the Partnership’s subsidiaries to the extent of the value of the assets at the subsidiaries. At December 31, 2011, the total amount of debt and liabilities of the Partnership’s subsidiaries was $263 million, all of which was unsecured. In the event of insolvency, bankruptcy, liquidation, reorganization, dissolution, winding up of the Partnership’s business or other similar process, the assets of the Partnership’s subsidiaries will be available to pay the amounts due on the Public Debt only after the indebtedness of the Partnership’s subsidiaries has been repaid in full.

Senior Notes outstanding, including unamortized discount, consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Senior Notes
Public Debt	$	1,029	$	1,029
Private Debt	263		358
Total Senior Notes	$	1,292	$	1,387

Plum Creek Timber Company, Inc. and the Partnership have filed a shelf registration statement with the Securities and Exchange Commission which expires December 2014. Under the shelf registration statement, Plum Creek Timber Company, Inc., from time to time, may offer and sell any combination of preferred stock, common stock, depositary shares, warrants and guarantees, and the Partnership, from time to time, may offer and sell debt securities. The company and the Partnership intend to maintain a shelf registration statement with respect to such securities.

Note Payable to Timberland Venture. The company has a $783 million note payable to a timberland venture (a related party). The annual interest rate on the note payable is fixed at 7.375%. During the ten-year term of the note, interest is paid quarterly with the principal due upon maturity. The note matures on October 1, 2018 but may be extended until October 1, 2020 at the election of Plum Creek. The note is not redeemable prior to maturity. The note is structurally subordinated to all other indebtedness of the company at December 31, 2011. See Notes 9 and 16 of the Notes to Consolidated Financial Statements.

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Debt Principal Payments. The table below summarizes the debt principal payments made for the years ended December 31 (in millions): 

	2011		2010
Public Debt	$	—	$	—
Private Debt	95		269
Term Credit Agreement	—		250
Total	$	95	$	519

During 2010, the company prepaid approximately $213 million of principal of Private Debt. This prepayment resulted in a $13 million loss. The $13 million loss for the year ended December 31, 2010 is classified as Loss on Extinguishment of Debt in the Consolidated Statements of Income.

Debt Covenants. Our Senior Notes, Term Credit Agreement and Line of Credit contain various restrictive covenants, none of which are expected to materially impact the financing of our ongoing operations. We are in compliance with all of our borrowing agreement covenants as of December 31, 2011.

Our Line of Credit and Term Credit Agreement require that we maintain certain interest coverage and maximum leverage ratios. We have no covenants and restrictions associated with changes in our debt ratings. Furthermore, there are no material covenants associated with our Note Payable to Timberland Venture, and this indebtedness is not considered in computing any of our debt covenants since the debt is an obligation of Plum Creek Timber Company, Inc. and not the Partnership.

The borrowing agreements for the Private Debt include limitations on the incurrence of indebtedness, making restricted payments (such as payments of cash dividends or stock repurchases), harvest levels and sales of assets. The restricted payments covenant is based on a computation of “available cash,” which is generally our net income (excluding gains on the sale of capital assets) after adjusting for non-cash charges (such as depreciation and depletion), changes in various reserves, less capital expenditures and principal payments on indebtedness that are not financed. Additionally, the amount of available cash may be increased by the amount of proceeds from the sale of higher and better use properties and, under certain circumstances, by 50% of the amount of net proceeds from the sale of other assets. At December 31, 2011, our entire cash balance of $254 million is available to make restricted payments. See Note 9 of the Notes to Consolidated Financial Statements.

As of December 31, 2011, we can borrow the entire amount available under our Line of Credit, and we expect to be able to incur at least this level of additional indebtedness for the next twelve months.

Equity

Dividends. On February 7, 2012, the Board of Directors declared a dividend of $0.42 per share, or approximately $68 million, which will be paid on March 2, 2012 to stockholders of record on February 17, 2012. Future dividends will be determined by our Board of Directors, in its sole discretion, based on consideration of a number of factors including, but not limited to, our results of operations, cash flow and capital requirements, economic conditions, tax considerations, debt covenant restrictions that may impose limitations on the company's ability to make cash payments, borrowing capacity, changes in the prices of and demand for Plum Creek's products, and changes in our ability to sell timberlands at attractive prices. Other factors that our Board of Directors considers include the appropriate timing of timber harvests, acquisition and divestiture opportunities, stock repurchases, debt repayment and other means by which the company could deliver value to its stockholders.

Share Repurchases. Plum Creek's Board of Directors has authorized a common stock repurchase program that may be increased from time to time at the Board of Directors' discretion. For the year ended December 31, 2011, we repurchased 0.7 million shares of common stock at a total cost of $25 million, or an average cost per share of $34.84. At December 31, 2011, $175 million is available for share repurchases under the current Board of Directors' authorization. See Note 11 of the Notes to Consolidated Financial Statements.

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ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Risk

Approximately $2.1 billion (including $783 million of related party obligations) of Plum Creek’s long-term debt bears interest at fixed rates, and therefore the fair value of these instruments is affected by changes in market interest rates. We also have variable rate debt that is affected by changes in market interest rates. The following table presents contractual principal cash flows based upon maturity dates of the company's debt obligations and the related weighted-average contractual interest rates by expected maturity dates for the fixed and variable rate debt (in millions):

	2012			2013			2014			2015			2016			Thereafter			Total		Fair Value(A)
December 31, 2011
Fixed Rate Debt
Third Party Obligations
Principal Due(B)	$	3		$	250		$	3		$	462		$	3		$	575		$	1,296	$	1,368
Average Interest Rate(C)	5.5		%	5.4		%	5.2		%	5.2		%	4.7		%	4.7		%
Related Party Obligations
Principal Due																$	783		$	783	$	913
Interest Rate																7.4		%
Variable Rate Debt(D)	$	350																	$	350	$	349
	2011			2012			2013			2014			2015			Thereafter			Total		Fair Value
December 31, 2010
Fixed Rate Debt
Third Party Obligations
Principal Due(B)	95			$	3		$	250		$	3		$	462		$	579		$	1,392	$	1,436
Average Interest Rate(C)	5.6		%	5.5		%	5.4		%	5.2		%	5.2		%	4.7		%
Related Party Obligations
Principal Due																$	783		$	783	$	885
Interest Rate																7.4		%
Variable Rate Debt				$	350														$	350	$	347

^(A)  The fair value of the company's Public Debt is estimated using market quotes; the fair value of the company's Private Debt with unrelated third parties is estimated using the same rates adjusted for the different maturities. The fair value of the company's Note Payable to Timberland Venture is estimated using the same rates as the Public Debt adjusted by an estimated risk premium for holding company debt and the different maturity. The decrease in fair value of our fixed rate debt compared to December 31, 2010 (excluding related party debt) was due primarily to principal repayments of $95 million of Private Debt during the twelve month period, partially offset by lower market interest rates. The increase in the fair value of our Note Payable to Timberland Venture at December 31, 2011 compared to December 31, 2010 was due primarily to lower market interest rates. In December 2011, the decline in treasury rates exceeded the increase in credit spreads (the difference between corporate debt rates and treasury rates) for debt with similar maturities, resulting in an increase in the fair value at December 31, 2011 for both our Private Debt and for our Note Payable to Timberland Venture.

The fair value of our floating rate term loan (variable rate debt) as of December 31, 2011 and December 31, 2010 was determined by adjusting the spread over LIBOR to a current market spread for comparable debt as of December 31, 2011 and December 31, 2010.

^(B)  Excludes unamortized discount of $4 million and $5 million at December 31, 2011 and 2010, respectively.

^(C)  Represents the average interest rate of total fixed rate debt (excluding related party debt) outstanding at the end of the period.

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^(D)  As of December 31, 2011, the interest rate for the $350 million term credit agreement was 0.65%. The interest rate on the term credit agreement is based on LIBOR plus 0.375%. This rate can range from LIBOR plus 0.3% to LIBOR plus 1.15% depending on our debt ratings. Not included in the above table are borrowings under our $600 million revolving line of credit of $348 million. As of December 31, 2011, the weighted-average interest rate on the $348 million of borrowings was 1.71%. The interest rate on the line of credit is based on LIBOR plus 1.50%. This rate can range from LIBOR plus 1.275% to LIBOR plus 2% depending on our debt ratings. As of January 3, 2012, $251 million of the borrowings under our line of credit was repaid.

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ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

PLUM CREEK TIMBER COMPANY, INC.

CONSOLIDATED STATEMENTS OF INCOME

	Year Ended December 31,
(In Millions, Except Per Share Amounts)	2011			2010			2009
REVENUES:
Timber	$	572		$	569		$	545
Real Estate	301			336			486
Manufacturing	273			265			245
Other	21			20			18
Total Revenues	1,167			1,190			1,294
COSTS AND EXPENSES:
Cost of Goods Sold:
Timber	445			421			431
Real Estate	92			148			200
Manufacturing	250			236			257
Other	2			2			1
Total Cost of Goods Sold	789			807			889
Selling, General and Administrative	106			95			106
Total Costs and Expenses	895			902			995
Other Operating Income (Expense), net	3			9			—
Operating Income	275			297			299
Equity Earnings from Timberland Venture	56			57			55
Interest Expense, net:
Interest Expense (Debt Obligations to Unrelated Parties)	81			80			89
Interest Expense (Note Payable to Timberland Venture)	58			58			58
Total Interest Expense, net	139			138			147
Loss on Extinguishment of Debt	—			(13		)	(2		)
Income before Income Taxes	192			203			205
Provision (Benefit) for Income Taxes	(1		)	1			(31		)
Income from Continuing Operations	193			202			236
Gain on Sale of Properties, net of tax	—			11			—
Net Income	$	193		$	213		$	236
PER SHARE AMOUNTS:
Income from Continuing Operations – Basic	$	1.19		$	1.25		$	1.45
Income from Continuing Operations – Diluted	$	1.19		$	1.24		$	1.44
Net Income per Share – Basic	$	1.19		$	1.31		$	1.45
Net Income per Share – Diluted	$	1.19		$	1.31		$	1.44
Dividends Declared – per Common Share Outstanding	$	1.68		$	1.68		$	1.68
Weighted-Average Number of Shares Outstanding
– Basic	161.7			162.1			163.3
– Diluted	162.0			162.3			163.4

See accompanying Notes to Consolidated Financial Statements

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PLUM CREEK TIMBER COMPANY, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Year Ended December 31,
(In Millions)	2011			2010		2009
Net Income	$	193		$	213	$	236
Other Comprehensive Income before Income Taxes:
Defined Benefit Pension Plans
Actuarial Gain (Loss)	(31		)	6		3
Plus: Amortization of Actuarial Loss Reclassified to Pension Expense	2			2		7
Unrealized Gains (Losses) on Grantor Trust Assets
Unrealized Holding Gains (Losses) Arising During Period	(1		)	2		5
Less: Reclassification for Gains (Losses) Recognized in Net Income	—			—		—
Other Comprehensive Income (Loss) Before Tax	(30		)	10		15
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income	(6		)	2		3
Other Comprehensive Income (Loss) After Tax	(24		)	8		12
Comprehensive Income	$	169		$	221	$	248

See accompanying Notes to Consolidated Financial Statements

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PLUM CREEK TIMBER COMPANY, INC.

CONSOLIDATED BALANCE SHEETS

(In Millions, Except Per Share Amounts)	December 31, 2011			December 31, 2010
ASSETS
Current Assets:
Cash and Cash Equivalents	$	254		$	252
Accounts Receivable	28			21
Inventories	48			49
Deferred Tax Asset	6			7
Assets Held for Sale	103			57
Other Current Assets	15			24
	454			410
Timber and Timberlands, net	3,377			3,405
Property, Plant and Equipment, net	138			146
Equity Investment in Timberland Venture	201			201
Deferred Tax Asset	17			10
Investment in Grantor Trusts (at Fair Value)	36			35
Other Assets	36			44
Total Assets	$	4,259		$	4,251
LIABILITIES
Current Liabilities:
Current Portion of Long-Term Debt	$	352		$	94
Line of Credit	348			166
Accounts Payable	25			25
Interest Payable	26			23
Wages Payable	20			23
Taxes Payable	9			12
Deferred Revenue	27			25
Other Current Liabilities	8			7
	815			375
Long-Term Debt	1,290			1,643
Note Payable to Timberland Venture	783			783
Other Liabilities	108			76
Total Liabilities	2,996			2,877
Commitments and Contingencies
STOCKHOLDERS’ EQUITY
Preferred Stock, $0.01 Par Value, Authorized Shares – 75.0, Outstanding – None	—			—
Common Stock, $0.01 Par Value, Authorized Shares – 300.6, Outstanding (net of Treasury Stock) – 161.3 at December 31, 2011 and 161.6 at December 31, 2010	2			2
Additional Paid-In Capital	2,261			2,243
Retained Earnings (Accumulated Deficit)	(28		)	51
Treasury Stock, at Cost, Common Shares – 26.9 at December 31, 2011 and 26.2 at December 31, 2010	(937		)	(911		)
Accumulated Other Comprehensive Income (Loss)	(35		)	(11		)
Total Stockholders’ Equity	1,263			1,374
Total Liabilities and Stockholders’ Equity	$	4,259		$	4,251

See accompanying Notes to Consolidated Financial Statements

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PLUM CREEK TIMBER COMPANY, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

	Common Stock				Paid-in Capital		Retained Earnings (Accumulated Deficit)			Treasury Stock			Accumulated Other Comprehensive Income (Loss)			Total Equity
(In Millions)	Shares		Dollars
January 1, 2009	166.0		$	2	$	2,225	$	149		$	(773	)	$	(31	)	$	1,572
Net Income							236									236
Other Comprehensive Income													12			12
Dividends							(275		)							(275		)
Shares Issued under Stock Incentive Plans	0.1		—		1											1
Share-based Compensation					7											7
Common Stock Repurchased	(3.3	)	—							(87		)				(87		)
December 31, 2009	162.8		$	2	$	2,233	$	110		$	(860	)	$	(19	)	$	1,466
Net Income							213									213
Other Comprehensive Income													8			8
Dividends							(272		)							(272		)
Stock Option Exercises	0.1		—		2											2
Shares Issued under Stock Incentive Plans	0.1		—		1											1
Share-based Compensation					7											7
Common Stock Repurchased	(1.4	)	—							(51		)				(51		)
December 31, 2010	161.6		$	2	$	2,243	$	51		$	(911	)	$	(11	)	$	1,374
Net Income							193									193
Other Comprehensive Income													(24		)	(24		)
Dividends							(272		)							(272		)
Stock Option Exercises	0.3		—		10											10
Shares Issued under Stock Incentive Plans	0.1		—		—											—
Share-based Compensation					8											8
Common Stock Repurchased	(0.7	)	—							(26		)				(26		)
December 31, 2011	161.3		$	2	$	2,261	$	(28	)	$	(937	)	$	(35	)	$	1,263

See accompanying Notes to Consolidated Financial Statements

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CONSOLIDATED STATEMENTS OF CASH FLOWS

	Year Ended December 31,
(In Millions)	2011			2010			2009
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$	193		$	213		$	236
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Depreciation, Depletion and Amortization (Includes $10 Lumber Impairment Loss in 2009)	96			96			109
Basis of Real Estate Sold	77			132			155
Equity Earnings from Timberland Venture	(56		)	(57		)	(55		)
Distributions from Timberland Venture	56			57			53
Deferred Income Taxes	—			1			(14		)
Gain on Sale of Properties and Other Assets	—			(13		)	—
Loss on Extinguishment of Debt	—			13			2
Deferred Revenue from Long-Term Gas Leases (Net of Amortization)	11			3			(6		)
Timber Deed Acquired	(5		)	—			—
Pension Plan Contributions	(3		)	(4		)	(10		)
Working Capital Changes Impacting Cash Flow:
Like-Kind Exchange Funds	—			—			48
Income Tax Receivable	(1		)	13			8
Other Working Capital Changes	(7		)	(17		)	5
Other	13			12			9
Net Cash Provided By Operating Activities	374			449			540
CASH FLOWS FROM INVESTING ACTIVITIES
Capital Expenditures (Excluding Timberland Acquisitions)	(70		)	(71		)	(61		)
Timberlands and Minerals Acquired	(101		)	—			(1		)
Proceeds from Sale of Properties and Other Assets	—			13			1
Purchases of Marketable Securities	—			(2		)	(3		)
Other	—			2			—
Net Cash Used In Investing Activities	(171		)	(58		)	(64		)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends	(272		)	(272		)	(275		)
Borrowings on Line of Credit	1,921			1,783			1,073
Repayments on Line of Credit	(1,739		)	(1,937		)	(984		)
Proceeds from Issuance of Long-Term Debt	—			575			—
Debt Issuance Costs	—			(7		)	—
Principal Payments and Retirement of Long-Term Debt	(95		)	(531		)	(273		)
Proceeds from Stock Option Exercises	10			2			—
Acquisition of Treasury Stock	(26		)	(51		)	(87		)
Net Cash Used In Financing Activities	(201		)	(438		)	(546		)
Increase (Decrease) In Cash and Cash Equivalents	2			(47		)	(70		)
Cash and Cash Equivalents:
Beginning of Period	252			299			369
End of Period	$	254		$	252		$	299
SUPPLEMENTAL CASH FLOW INFORMATION
Cash Paid (Received) During the Year for:
Interest - Debt Obligations to Unrelated Parties	$	76		$	80		$	93
Interest - Note Payable to Timberland Venture	58			58			58
Interest - Net	$	134		$	138		$	151
Income Taxes - Net	$	—		$	(15	)	$	(18	)

See accompanying Notes to Consolidated Financial Statements

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NOTE 1. ACCOUNTING POLICIES

General. Plum Creek Timber Company, Inc. (“Plum Creek,” “the company,” “we,” “us,” or “our”), a Delaware Corporation, is a real estate investment trust, or “REIT”, for federal income tax purposes. Plum Creek Timber Company, Inc. is also the parent company of its wholly-owned subsidiary Plum Creek Timberlands, L.P. (“the Partnership”), a Delaware Limited Partnership. At December 31, 2011, the company owned and managed approximately 6.6 million acres of timberlands in the Northwest, Southern and Northeast United States, and owned 8 wood product conversion facilities in the Northwest United States (2 of which have been curtailed). Included in the 6.6 million acres are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. In addition, the company has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller acreage transactions over the near and medium term. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Basis of Presentation. The consolidated financial statements of the company include the accounts of Plum Creek Timber Company, Inc. and its subsidiaries. Intercompany transactions and accounts have been eliminated in consolidation. All transactions are denominated in United States dollars.

Use of Estimates. The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Customer Concentrations. The following table sets forth the annual revenues from the company’s largest customer as a percentage of total annual revenues for the years ended December 31:

	2011		2010		2009
Customer Revenue as a Percentage of Total Revenues	7	%	7	%	7	%

If adverse market conditions for wood products were to continue or worsen, the loss of this customer could have a significant effect on the company’s results of operations.

Product Concentrations. Sales of the company’s timber and wood products are dependent upon the economic conditions of the housing, repair and remodeling, industrial, and pulp and paper industries. Sales of the company’s timberlands are dependent upon the general economic conditions in the United States, interest rates and the availability of buyer financing from financial institutions, not-for-profit organizations and government sources. As a result of these product concentrations, continued or worsening conditions in these markets could have a significant impact on the company’s results of operations.

Revenue Recognition. Timber sales revenues are recognized when legal ownership and the risk of loss transfers to the purchaser and the quantity sold is determinable. The company sells timber under delivered log agreements as well as through sales of standing timber (or “stumpage”). For delivered sales, revenue, which includes amounts billed for shipping and handling (logging and hauling of timber), is recognized when the log is delivered to the customer. Stumpage is sold using pay-as-cut or timber deed sale agreements. Under a pay-as-cut sales contract, the purchaser acquires the right to harvest specified timber on a tract, at an agreed upon price per unit. The sale and any related advances are recognized as revenue as the purchaser harvests the timber on the tract. Under a timber deed sale, the buyer agrees to purchase and harvest specified timber on a tract of land over the term of the contract (usually less than 18 months). Unlike a pay-as-cut sales contract, risk of loss and title to the trees transfer to the buyer when the contract is signed. The buyer also pays the full purchase price when the contract is signed. Revenue from a timber deed sale is recognized when the contract is signed.

Revenues generated from the sale of lumber, plywood, medium density fiberboard (“MDF”) and related by-products

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(primarily wood chips), and amounts billed for shipping and handling, are recognized at the time of delivery.

Revenue from the sale of real estate is recognized when the sale has been consummated, the buyer’s initial and ongoing payments are adequate, the risks and rewards of owning the property have transferred to the buyer, and we have no continuing involvement with the property. For substantially all of our real estate sales, we receive the entire consideration in cash at closing (“Cash Sales”). Also at closing, the risks and rewards of ownership transfer to the buyer and we do not have a continuing involvement in our properties after they are sold. We recognize revenue under the full accrual method for Cash Sales of real estate when the sale is consummated (i.e., at closing). On occasion, we receive a portion of the real estate sale consideration in the form of a note receivable. These sales ("Credit Sales") as a percentage of total real estate sales were as follows for the years ended December 31:

	2011		2010		2009
Credit Sales as a Percentage of Total Real Estate Sales	0	%	3	%	3	%

Under these circumstances, we use the full accrual method of recognizing revenue if the buyer’s initial and continuing investment is adequate; otherwise, revenue is generally recognized under the cost recovery method or deposit method, depending on the circumstances. Revenue from real estate development projects is generally recognized under the full accrual method of accounting because sales generally do not commence until the project is completed. Broker commissions and closing costs of our Real Estate Segment are included in Cost of Goods Sold.

We occasionally sell timberlands to a single buyer under a multi-period contract covering a series of prescheduled closings and/or options. Under these multi-period contracts, once title and risk of loss have transferred to the buyer for individual properties, the properties sold cannot be returned for a refund. However, deposits for future closings under multi-period contracts may be refunded under certain circumstances. The company treats each closing under a multi-period arrangement as a separate sale. Revenue in connection with a multi-period contract is generally recognized at closing equal to the lesser of the non-refundable consideration received or an allocation of total consideration based on fair value.

Furthermore, we may occasionally pursue a non-cash exchange of timberlands. Revenue is recognized in connection with non-cash exchanges of timberlands when the exchanges are considered to have commercial substance. We will recognize revenue to the extent of the fair value of the timberlands received. Revenues from non-cash exchanges of timberlands were $25 million in 2009.

Revenue generated from real estate sales includes the sale of higher value timberlands, non-strategic timberlands and large blocks of timberlands. In some of these transactions, the company sells timberlands that qualify for like-kind (tax-deferred) exchange treatment under the Internal Revenue Code. Substantially all of these sales involve a third party intermediary, whereby the third party intermediary receives proceeds related to the property sold and then reinvests the proceeds in like-kind property. The proceeds are recorded as revenue when the third party intermediary receives them. See “Like-Kind Exchanges”.

Cash and Cash Equivalents. All highly liquid investments purchased with an original maturity of three months or less are considered to be cash equivalents. Substantially all of the cash and cash equivalents are invested in money market funds.

Accounts Receivable. Accounts receivable is presented net of an allowance for doubtful accounts of $0.4 million at December 31, 2011 and $0.4 million at December 31, 2010. Accounts are deemed past due based on payment terms. The allowance for doubtful accounts represents management’s estimate and is based on historical losses, recent collection history, credit ratings of individual customers and existing economic conditions. Delinquent accounts are charged against the allowance for doubtful accounts to the extent and at the time they are deemed uncollectible.

Like-Kind Exchanges. Plum Creek may enter into like-kind (tax-deferred) exchange transactions to acquire and sell assets, principally timberlands. These transactions may include both forward (timberlands sold, followed by

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reinvestment of proceeds to acquire timberlands) and reverse (timberlands purchased, followed by receipt of proceeds from timberland sales) like-kind exchanges. The company uses a qualified escrow account to facilitate like-kind exchange transactions. Funds from forward like-kind exchange transactions are restricted from being used until the funds are either successfully reinvested in timber and timberlands or the exchange fails and the proceeds are distributed to the company.

Inventories. Logs, work-in-process and finished goods are stated at the lower of cost or market using the average cost method. A separate lower of cost or market analysis is prepared for each product line (i.e. lumber, plywood and MDF). Net realizable value is determined based on actual selling prices at the end of the accounting period. Losses on firm purchase commitments for logs are recorded when the related manufactured finished products are expected to be sold at a loss based on current product prices. Supplies inventories are stated at cost. Costs for manufactured inventories include raw materials, labor, supplies, energy, depreciation and production overhead. Cost of log inventories include timber depletion, stumpage, associated logging and harvesting costs, road costs and production overhead.

Timber and Timberlands. Timber (including timber deeds and logging roads) and timberlands (including mineral reserves) are stated at cost less accumulated depletion for timber previously harvested and accumulated road amortization. The company capitalizes timber and timberland purchases along with reforestation costs and other costs associated with the planting and growing of timber, such as site preparation, growing or purchases of seedlings, planting, fertilization, herbicide application and the thinning of tree stands to improve growth. The company presents timber and timberland purchases and the capitalized costs described above under Investing Activities on the Consolidated Statements of Cash Flows. A timber deed, also called timber cutting rights, allows the company to harvest timber on timberlands it does not own over a specific time period (currently less than 10 years). The company capitalizes timber deed acquisitions. The company presents timber deed acquisitions under Operating Activities on the Consolidated Statements of Cash Flows. Timber carrying costs, such as real estate taxes, insect control, wildlife control, leases of timberlands (other than lease payments for the purchase of standing timber, in which case the payments are capitalized) and forest management personnel salaries and fringe benefits, are expensed as incurred. Costs of major roads are capitalized and amortized over 30 years. Costs for roads that are built to access multiple logging sites over numerous years are capitalized and amortized over 6 years. Costs for roads built to access a single logging site are expensed as incurred.

Costs attributable to timber harvested, or depletion, are charged against income as trees are harvested. Depletion rates are determined annually based on the relationship between net carrying value of the timber plus certain capitalizable silviculture costs expected to be incurred over the harvest cycle and total timber volume estimated to be available over the harvest cycle. The depletion rate does not include an estimate for either future reforestation costs associated with a stand’s final harvest or future volume in connection with the replanting of a stand subsequent to its final harvest. Net carrying value of the timber and timberlands is used to compute the gain or loss in connection with timberland sales.

Higher and Better Use Timberlands / Real Estate Development. We estimate that included in the company’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber. Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries.

Costs associated with a specific real estate project are capitalized when management estimates that it is probable that a project will be successful. Both external and internal expenditures directly associated with the specific real estate project are capitalized. The company will capitalize improvements and other development costs, including interest costs and property taxes, during the development period. General real estate development costs not related to a specific project and costs incurred before management has concluded that it is probable that a project will be successful (e.g. investigatory costs) are expensed as incurred. For real estate projects with multiple parcels, the company

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determines the cost of the individual lots sold by allocating the historical cost of the land, timber, development and common construction costs on a relative sales value.

Properties developed by the company will generally be low-intensity development limited to activities associated with obtaining entitlements. Capitalized real estate development costs, including the book basis in the related timber and timberlands associated with these developments, were $13 million at December 31, 2011. Substantially all of these properties are expected to be sold beyond one year and are included in Other Assets (non-current). Total capitalized real estate development costs at December 31, 2010 were $14 million.

Larger and more complicated projects needing more invested capital may be developed through third party ventures. These projects have a longer timeframe and are not expected to be sold in the near term. The capitalized development costs for these projects and the book basis of the related timber and timberlands are included in Timber and Timberlands as they are still managed for timber operations. At December 31, 2011, approximately $18 million of costs have been capitalized for a single project that has been approved by a state commission but is being appealed in court by groups opposed to the project. While not expected, if the approval is reversed, some or all of these capitalized costs could be written off in the next twelve months.

The book basis of timberlands that are considered held for sale are presented in the Consolidated Balance Sheet as Assets Held for Sale. The total book basis for assets held for sale was $103 million at December 31, 2011 and $57 million at December 31, 2010. Generally, timberlands that are under contract to sell or are listed for sale through an independent broker or by a taxable REIT subsidiary and are expected to be sold within the next year are considered assets held for sale. The book basis of timberlands that do not meet the held for sale criteria is included in Timber and Timberlands.

Accounting for Equity Method Investments. In 2008, the company contributed 454,000 acres of timberlands located in its Southern Resources Segment to a timberland venture in exchange for a $705 million preferred interest and a $78 million common interest. The company accounts for its interest in the Timberland Venture under the equity method of accounting. See Note 16 of the Notes to Consolidated Financial Statements.

Property, Plant and Equipment. Property, plant and equipment are recorded at cost. Replacements of major units of property are capitalized, and the replaced units are retired. Replacement of minor components of property and repair and maintenance costs are charged to expense as incurred.

The company evaluates its long-lived assets for potential impairment whenever circumstances indicate the book basis of an asset group may not be recoverable. The company considers each of its manufacturing facilities to be a separate asset group based on identifiable cash flows.

All property, plant and equipment other than manufacturing machinery (for lumber, plywood and MDF) are depreciated using the straight-line method over the estimated useful lives of the related assets. Manufacturing machinery and equipment are depreciated on either a straight-line basis or a units-of-production basis, which approximates a straight-line basis. Useful lives are 19 years for land improvements, 20 to 45 years for buildings, and 3 to 20 years for machinery and equipment. Leasehold improvements are depreciated over the lease term or estimated useful life, whichever is shorter. The cost and related accumulated depreciation of property sold or retired are removed from the accounts and any gain or loss is recorded. Depreciation expense, excluding impairment charges, was as follows for the years ended December 31 (in millions):

	2011		2010		2009
Depreciation Expense	$	20	$	19	$	20

Grantor Trusts. The company has a grantor trust that was established for deferred compensation and deferred Plum Creek shares. See Note 10 of the Notes to Consolidated Financial Statements. Deferred compensation assets, which include money market and mutual fund investments, are classified as “trading securities” and are carried at market value. Realized gains and losses and changes in unrealized gains and losses and a corresponding amount of

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compensation expense are recorded in the Consolidated Statements of Income.

Plum Creek maintains another grantor trust, which the company uses to fund its non-qualified pension plan obligation. See Notes 10 and 12 of the Notes to Consolidated Financial Statements. Money market and mutual fund investments held by this trust are classified as “available for sale securities.” The investments are carried at market values on the company’s Consolidated Balance Sheets. Realized gains and losses are recognized in the Consolidated Statements of Income; changes in unrealized gains and losses are recorded as other comprehensive income or loss, unless an other than temporary impairment has occurred, in which case an impairment loss is recognized in the Consolidated Statements of Income.

Shipping and Handling Costs. Costs incurred for the transportation of timber and manufactured products are included in Cost of Goods Sold.

Accounting for Share-Based Compensation. All share-based payments to employees are recognized in the income statement based on their fair values. The company uses the Black-Scholes-Merton option pricing model to value stock options and uses the grant date fair values, the closing market price for its common stock, to value other common stock awards of restricted stock and restricted stock units. The company also grants share-based awards that are classified and accounted for as liabilities. These awards are valued using a Monte Carlo simulation.

Other Operating Income. Periodically the company will recognize gains and losses from miscellaneous asset sales, litigation settlements and other items which are reported in our Consolidated Statements of Income as Other Operating Income (Expense), net. See Note 19 of the Notes to Consolidated Financial Statements.

Reclassifications. Certain prior year amounts have been reclassified to conform to the 2011 presentation. The reclassifications had no impact on operating income or net income.

New Accounting Pronouncements

Presentation of Comprehensive Income. In 2011, the FASB issued a new accounting standard requiring entities to present net income and other comprehensive income in either a single continuous statement or in two separate, but consecutive, statements of net income and comprehensive income. The new requirements do not change which components of comprehensive income are recognized in net income or in other comprehensive income, or when an item of other comprehensive income is recognized or must be reclassified to net income. During 2011, the FASB also deferred a requirement that entities present separately reclassification adjustments on the face of the income statement.

While the new requirements are effective for public entities in fiscal years (including interim periods) beginning after December 15, 2011, as permitted by the standard, the company has elected adoption at December 31, 2011. As a result, the financial statements include separate Consolidated Statements of Comprehensive Income with retrospective application to previously presented periods.

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NOTE 2. EARNINGS PER SHARE

The following tables set forth the reconciliation of basic and diluted earnings per share for the years ended December 31 (in millions, except per share amounts):

	2011		2010		2009
Income from Continuing Operations	$	193	$	202	$	236
Gain on Sale of Properties, net of tax	—		11		—
Net Income Available to Common Stockholders	$	193	$	213	$	236
Denominator for Basic Earnings per Share	161.7		162.1		163.3
Effect of Dilutive Securities – Stock Options	0.2		0.1		0.1
Effect of Dilutive Securities – Restricted Stock, Restricted Stock Units and Value Management Plan	0.1		0.1		—
Denominator for Diluted Earnings per Share – Adjusted for Dilutive Securities	162.0		162.3		163.4
Per Share Amounts – Basic:
Income from Continuing Operations	$	1.19	$	1.25	$	1.45
Gain on Sale of Properties, net of tax	$	—	$	0.07	$	—
Net Income	$	1.19	$	1.31	$	1.45
Per Share Amounts – Diluted:
Income from Continuing Operations	$	1.19	$	1.24	$	1.44
Gain on Sale of Properties, net of tax	$	—	$	0.07	$	—
Net Income	$	1.19	$	1.31	$	1.44

Basic and diluted per share amounts are computed independently for each caption presented. Therefore, the sum of the per share components from the table above may not equal the per share amount presented.

Under the company's Stock Incentive Plan (See Note 13 of the Notes to Consolidated Financial Statements), the company grants restricted stock units, which prior to vesting, are entitled to non-forfeitable cash payments equal to dividends paid on the company's common shares. These awards are considered participating securities for purposes of computing basic and diluted earnings per share.

Antidilutive options were excluded for certain periods from the computation of diluted earnings per share because the exercise prices of the options were greater than the average market price of the common shares. Antidilutive options were as follows for the years ended December 31 (shares in millions):

	2011	2010	2009
Number of Options	1.5	2.0	2.2
Range of Exercise Prices	$35.22 to $43.23	$33.75 to $43.23	$30.70 to $43.23
Expiration on or before	February 2021	February 2020	February 2019

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NOTE 3. INVENTORIES

Inventories, accounted for using the lower of average cost or market, consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Raw Materials (primarily logs)	$	10	$	12
Work-In-Process	1		1
Finished Goods	24		24
	35		37
Supplies	13		12
Total	$	48	$	49

NOTE 4. TIMBER AND TIMBERLANDS

Timber and Timberlands consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Timber and Logging Roads, net	$	2,232	$	2,261
Timber Deed	5		—
Timberlands	1,140		1,144
Timber and Timberlands, net	$	3,377	$	3,405

During 2011, the company acquired approximately 59,000 acres of timberlands primarily located in Alabama and Georgia and mineral reserves in Oregon for a total of $101 million. These purchases were financed primarily from our line of credit and have been accounted for as asset acquisitions. Timberland dispositions during 2011 were approximately 185,000 acres, of which 45,000 acres were located in the Northern Resources Segment and 140,000 acres were located in the Southern Resources Segment.

Timberland dispositions during 2010 were approximately 258,000 acres, of which 142,000 acres were located in the Northern Resources Segment and 116,000 acres were located in the Southern Resources Segment. Included in the 142,000 acres of Northern Resources timberland dispositions are approximately 70,000 acres sold in Montana for proceeds of $89 million and operating income of $37 million from the third phase of a multi-period contract. In connection with this multi-period transaction, we also entered into a fiber supply agreement for these timberlands (for up to 15 years) at market-based prices to supply our manufacturing facilities.

In January 2012, the company purchased a timber deed in the Southern Resources Segment for $103 million, $5 million of which was paid as a deposit in December 2011. The timber deed encompasses approximately 4.7 million tons of standing timber and will be harvested over the eight-year term of the deed. The timber deed purchase price has been and will be reflected in our Consolidated Statements of Cash Flows as an outflow under Cash Provided by Operating Activities.

The company's Real Estate Segment revenue consists of sales of higher and better use timberlands and sales of non-strategic timberland. Occasionally, timberlands are sold at a loss. Each potential real estate sale is evaluated for a possible impairment in accordance with the accounting for long-lived assets classified as held for sale. At December 31, 2011, the book basis of real estate held for sale was $103 million and was $57 million as of December 31, 2010. Impairment losses are included in Cost of Goods Sold for Real Estate in our Consolidated Statements of Income.

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Impairment losses recorded for the potential sale of timberlands and the associated book basis after the impairment recognition were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Impairment Losses	$	1	$	1	$	3
Book Basis of Property	$	7	$	2	$	33

The fair value of the impaired assets was primarily determined based on external appraisals which were derived from a combination of comparable sales and discounted future cash flows.

NOTE 5. PROPERTY, PLANT AND EQUIPMENT

Property, Plant and Equipment consisted of the following (in millions):

	December 31, 2011			December 31, 2010
Land, Buildings and Improvements	$	86		$	84
Machinery and Equipment	315			309
	401			393
Accumulated Depreciation	(263		)	(247		)
Property, Plant and Equipment, net	$	138		$	146

NOTE 6. INCOME TAXES

Plum Creek has elected to be taxed as a REIT under sections 856-860 of the United States Internal Revenue Code. A REIT generally does not pay corporate-level income tax if it distributes 100% of its taxable income to shareholders and satisfies other organizational and operational requirements as set forth in the Internal Revenue Code. If a company fails to qualify as a REIT in any taxable year, it will be subject to federal income taxes at regular corporate rates (including any applicable alternative minimum tax) and may not be able to qualify as a REIT for four subsequent taxable years.

Plum Creek operates as a REIT through various wholly-owned subsidiaries and a joint venture partnership. The activities of the operating partnerships and joint venture partnership consist primarily of sales of standing timber under pay-as-cut sales contracts. The book basis of the REIT’s assets and liabilities exceeds its tax basis by approximately $1.8 billion at December 31, 2011.

Plum Creek conducts certain activities through various wholly-owned taxable REIT subsidiaries, which are subject to corporate-level income tax. These activities include the company’s manufacturing operations, the harvesting and sale of logs, and the development and/or sale of some of the company’s higher and better use timberlands. Plum Creek’s wholly-owned taxable REIT subsidiaries file a consolidated federal income tax return.

Prior to 2011, Plum Creek was generally subject to corporate-level tax (built-in gains tax) when the company made a taxable disposition of certain properties acquired in a 2001 merger. The built-in gains tax applied to gains recognized from such asset sales to the extent that the fair value of the property exceeded its tax basis at the merger date. Built-in gains tax was generally not payable on dispositions of property to the extent the proceeds from such dispositions were reinvested in qualifying like-kind replacement property. Prior to 2011, Plum Creek maintained a deferred income tax liability related to the book-tax basis difference of timber and timberlands that were expected to be sold, and subject to, the built-in gains tax.

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In connection with the enactment of the American Recovery and Reinvestment Act of 2009, deferred taxes associated with timber and timberlands related to the built-in gains tax were reduced by $3 million, resulting in the recognition of a $3 million deferred income tax benefit in 2009. Furthermore, as a result of the enactment of the American Recovery and Reinvestment Act of 2009, the company reversed $5 million of current tax expense related to built-in gains tax that had been accrued in 2008. Following the enactment of the Small Business Jobs Act of 2010, the company concluded that it no longer needed a deferred tax liability in connection with expected sales of timberlands that are subject to the built-in gains tax. As a result, the company reduced its deferred tax liability by $1 million in 2010.

The company recognizes interest and penalties, if incurred, related to income taxes in the Provision for Income Taxes in the Consolidated Statements of Income. During the years ended December 31, 2011, 2010 and 2009, amounts for interest and penalties included in the tax provision were insignificant. At December 31, 2011, and December 31, 2010, the company had no accrued interest or penalties related to income taxes.

The provision (benefit) for income taxes consists of the following for the years ended December 31 (in millions):

	2011			2010			2009
Current Income Taxes (A):
Federal	$	—		$	—		$	(14	)
State	(2		)	—			(2		)
Deferred Income Taxes:
Federal	—			3			—
State	—			—			—
Utilization of (Benefit from) Operating Loss Carryforward	(2		)	(1		)	(12		)
Change to Valuation Allowance	3			—			—
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

^(A)  Included in the current tax provision for 2009 is a $12 million tax benefit associated with the carryback of net operating losses to 2004 and 2005 as a result of the Worker, Homeownership and Business Assistance Act of 2009.

The federal statutory income tax rate was 35%. The income generated by the activities of the REIT is generally not subject to federal and state income tax. The permanent book-tax differences consist primarily of differences in cost basis for certain contributed properties that were sold, in which the tax basis exceeded the book basis.

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The provision (benefit) for income taxes is reconciled as follows to the federal statutory rate for the years ended December 31 (in millions):

	2011			2010			2009
Provision for Income Taxes on Income from Continuing Operations Computed at the Federal Statutory Tax Rate of 35%	$	67		$	71		$	72
REIT Income not Subject to Federal Tax	(68		)	(64		)	(86		)
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Change to Valuation Allowance	3			—			—
State Income Tax Expense (Benefit), net of Federal Benefit	(1		)	—			(2		)
Reversal of Accrued Built-In Gains	—			—			(5		)
Tax Audit Settlements	1			—			—
Permanent Book-Tax Differences	(3		)	(5		)	(7		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

Total income tax provision (benefit) was allocated as follows for the years ended December 31 (in millions):

	2011			2010		2009
Income from Continuing Operations	$	(1	)	$	1	$	(31	)
Other Comprehensive Income	(6		)	2		3
Gain on Sale of Properties	—			—		—
Additional Paid-In Capital (Share-Based Compensation)	—			—		—
Total Income Tax Provision (Benefit)	$	(7	)	$	3	$	(28	)

Deferred income taxes are provided for the temporary differences between the financial reporting basis and tax basis for the assets and liabilities of our various wholly-owned taxable REIT subsidiaries. The components of deferred income tax assets and liabilities are as follows at December 31 (in millions):

	2011			2010
Deferred Income Tax Assets:
Federal and State Net Operating Loss Carryforwards	$	15		$	14
Accrued Compensation	7			7
Accrued Pension Benefits	17			6
Timber and Timberlands	9			9
Accrued Workers' Compensation Benefits	4			4
Inventory Reserves and Write-downs	—			2
Other Accruals and Reserves	3			6
Valuation Allowance	(3		)	—
	52			48
Deferred Income Tax Liabilities:
Machinery and Equipment	(29		)	(31		)
	(29		)	(31		)
Deferred Income Tax Asset, net	$	23		$	17

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The company has federal and state net operating loss carryforwards of $15 million at December 31, 2011 which will begin to expire in 2028. In 2011, the company recorded a valuation allowance of $3 million to reflect the estimated amount of deferred tax assets that may not be realized. The valuation allowance is related to certain state net operating loss carryforwards and other associated deferred tax assets that we do not believe it is more likely than not will be realized in future periods.

The determination of the realization of deferred tax assets is based upon management's judgment of various future events and uncertainties, including the timing, nature and amount of future taxable income earned by certain wholly-owned subsidiaries. A valuation allowance is recognized if management believes it is more likely than not that some portion, or all, of the deferred tax asset will not be realized. The company has recorded gross deferred tax assets of $62 million (net of a $3 million valuation allowance) and $54 million as of December 31, 2011 and December 31, 2010, respectively. Management believes that due to the reversal of various taxable temporary differences and/or the planned execution of prudent and feasible tax planning strategies, sufficient taxable income can be generated to utilize the company's remaining deferred tax assets for which a valuation allowance was determined to be unnecessary.

The net deferred income tax asset is classified on our Consolidated Balance Sheets as follows at December 31 (in millions):

	2011		2010
Current Deferred Income Tax Asset	$	6	$	7
Non Current Deferred Income Tax Asset	17		10
Deferred Income Tax Asset, net	$	23	$	17

As of December 31, 2011 and December 31, 2010, we did not have any liabilities for unrecognized tax benefits. We believe the statute of limitations has expired for all tax years prior to 2006. We continue to monitor the progress of ongoing income tax controversies. We do not currently believe there is a reasonable possibility of recording a liability for unrecognized tax benefits within the next twelve months.

NOTE 7. REIT DISCLOSURES

Plum Creek has elected to be taxed as a REIT under sections 856-860 of the United States Internal Revenue Code. For the years 2011, 2010 and 2009, Plum Creek elected to designate all distributions as long-term capital gain dividends. As of and for the years ended December 31, 2011, 2010, and 2009, Plum Creek has distributed all of its taxable income. The company has no undistributed capital gain or ordinary income as of December 31, 2011.

The table below summarizes the historical tax character of distributions to Plum Creek shareholders for the years ended December 31 (amounts per share):

	2011		2010		2009
Capital Gain Dividend	$	1.68	$	1.68	$	1.68
Non-Taxable Return of Capital	—		—		—
Total Distributions	$	1.68	$	1.68	$	1.68

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NOTE 8. BORROWINGS

All of our borrowings, except the Note Payable to Timberland Venture, are made by Plum Creek Timberlands, L.P., the company’s wholly-owned operating partnership (“the Partnership”). Furthermore, all of the outstanding indebtedness of the Partnership is unsecured. Outstanding borrowings consist of the following (in millions): 

	December 31, 2011		December 31, 2010
Line of Credit maturing 2015, 1.71% at 12/31/11, based on LIBOR plus 1.50%	$	348	$	166
Term Credit Agreement due 2012, 0.65% at 12/31/11, based on LIBOR plus 0.375%.	350		350
Senior Notes due 2011, 7.83%	—		49
Senior Notes due 2013, 6.18%	174		174
Senior Notes due 2013, 7.76% less unamortized discount of $0.3 at 12/31/11, effective rate of 8.05%	72		111
Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10%	454		454
Senior Notes due 2016, mature serially 2012 to 2016, 8.05%	17		24
Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71%	575		575
Note Payable to Timberland Venture due 2018, 7.375%	783		783
Total Long-Term Debt	2,773		2,686
Less: Current Portion of Long-Term Debt	352		94
Less: Line of Credit	348		166
Long-Term Portion	$	2,073	$	2,426

Line of Credit. The company has a $600 million revolving line of credit agreement that matures January 30, 2015. The weighted-average interest rate for the borrowings on the line of credit was 1.71% and 1.95% as of December 31, 2011 and December 31, 2010, respectively. The interest rate on the line of credit is based on LIBOR plus 1.50%. This rate can range from LIBOR plus 1.275% to LIBOR plus 2% depending on our debt ratings. In addition to interest, the line has an annual facility fee of 0.25% that can vary depending on debt rating. Subject to customary covenants, the line of credit allows for borrowings from time to time up to $600 million, including up to $100 million of standby letters of credit. Borrowings on the line of credit fluctuate daily based on cash needs. As of December 31, 2011, we had $348 million of borrowings and $2 million of standby letters of credit outstanding; $250 million remained available for borrowing under our line of credit. As of January 3, 2012, $251 million of the borrowings under our line of credit was repaid. The line of credit has been classified as a current liability in our Consolidated Balance Sheet as of December 31, 2011, because the company used its cash as of December 31, 2011 to repay a portion of the line.

Term Credit Agreement. The company has a $350 million term credit agreement that matures July 10, 2012. As of December 31, 2011, the interest rate for the term credit agreement was 0.65%. The interest rate is based on LIBOR plus 0.375%. This rate can range from LIBOR plus 0.3% to LIBOR plus 1.15% depending on our debt ratings. The term credit agreement is subject to covenants that are substantially the same as those of the revolving line of credit. The agreement allows for prepayment of the borrowings at any time prior to the maturity date without premium or penalty.

Senior Notes. The company has outstanding Senior Notes with various maturities and fixed interest rates. As of December 31, 2011, the company has $263 million aggregate principal amount of Senior Notes outstanding that are privately placed borrowings with various lenders (“Private Debt”). The Private Debt matures serially through 2016.

As of December 31, 2011, the company has publicly issued approximately $1.0 billion aggregate principal amount of Senior Notes (“Public Debt”). The company has $575 million aggregate principal amount of 4.70% Public Debt which

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matures in 2021. The remaining 5.875% Public Debt with an aggregate principal amount of $458 million matures in 2015. The Public Debt is issued by the Partnership and is fully and unconditionally guaranteed by Plum Creek Timber Company, Inc.

The Senior Notes are redeemable prior to maturity; however, they are subject to a premium on redemption, which is based upon interest rates of U.S. Treasury securities having similar average maturities. The premium that would have been due upon early retirement approximated $237 million at December 31, 2011 and $164 million at December 31, 2010.

The Public Debt is structurally subordinated to all debt and liabilities of the Partnership’s subsidiaries to the extent of the value of the assets at the subsidiaries. At December 31, 2011, the total amount of debt and liabilities of the Partnership’s subsidiaries was $263 million, all of which was unsecured. In the event of insolvency, bankruptcy, liquidation, reorganization, dissolution, winding up of the Partnership’s business or other similar process, the assets of the Partnership’s subsidiaries will be available to pay the amounts due on the Public Debt only after the indebtedness of the Partnership’s subsidiaries has been repaid in full.

Senior Notes outstanding, including unamortized discount, consisted of the following (in millions): 

	December 31, 2011		December 31, 2010
Senior Notes
Public Debt	$	1,029	$	1,029
Private Debt	263		358
Total Senior Notes	$	1,292	$	1,387

Plum Creek Timber Company, Inc. and the Partnership have filed a shelf registration statement with the Securities and Exchange Commission which expires in December 2014. Under the shelf registration statement, Plum Creek Timber Company, Inc., from time to time, may offer and sell any combination of preferred stock, common stock, depositary shares, warrants and guarantees, and the Partnership may from time to time, offer and sell debt securities. The company intends to maintain a shelf registration statement with respect to such securities.

Note Payable to Timberland Venture. The company has a $783 million note payable to a timberland venture (a related party). The annual interest rate on the note payable is fixed at 7.375%. During the ten-year term of the note, interest is paid quarterly with the principal due upon maturity. The note matures on October 1, 2018 but may be extended until October 1, 2020 at the election of Plum Creek. The note is not redeemable prior to maturity. The note is structurally subordinated to all other indebtedness of the company at December 31, 2011. See Notes 9 and 16 of the Notes to Consolidated Financial Statements.

Debt Principal Payments. The table below summarizes the debt principal payments made for the years ended December 31 (in millions): 

	2011		2010
Public Debt	$	—	$	—
Private Debt	95		269
Term Credit Agreement	—		250
Total	$	95	$	519

During 2010, the company prepaid approximately $213 million of principal of Private Debt. This prepayment resulted in a $13 million loss. The $13 million loss for the year ended December 31, 2010, is classified as Loss on Extinguishment of Debt in the Consolidated Statements of Income.

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Debt Maturities. The aggregate maturities on all debt agreements are as follows as of December 31, 2011 (in millions): 

Maturity	Debt Agreements		Note Payable to Timberland Venture		Total
2012	$	353	$	—	$	353
2013	250		—		250
2014	3		—		3
2015	810		—		810
2016	3		—		3
Thereafter	575		783		1,358
Total	$	1,994	$	783	$	2,777

Debt Covenants. Certain of the company’s debt agreements contain various restrictive covenants, including limitations on harvest levels, sales of assets, the incurrence of indebtedness and making restricted payments (such as payments of cash dividends or stock repurchases). The borrowing agreements for the Private Debt limit our ability to make restricted payments (see Note 9 of the Notes to Consolidated Financial Statements) based on a computation of “available cash”, which is generally our net income (excluding gains on the sale of capital assets) after adjusting for non-cash charges (such as depreciation and depletion), changes in various reserves, less capital expenditures and principal payments on indebtedness that are not financed. Additionally, the amount of available cash may be increased by the amount of proceeds from the sale of higher and better use properties and, under certain circumstances, by 50% of the amount of net proceeds from the sale of other assets. Furthermore, our line of credit and term credit agreement require that we maintain certain interest coverage and maximum leverage ratios. The company was in compliance with all of our borrowing agreements covenants as of December 31, 2011.

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NOTE 9. RESTRICTED NET ASSETS

Plum Creek Timber Company, Inc. is the direct parent company of Plum Creek Timberlands, L.P. (“Partnership”) and Plum Creek Ventures I, LLC (“PC Ventures”), and the indirect parent of all the subsidiaries of the consolidated group. Plum Creek Timber Company, Inc. has no assets or liabilities other than its ownership interest in the Partnership and PC Ventures. During 2008, PC Ventures borrowed $783 million from an entity in which the Partnership has an equity interest. See Notes 8, 16 and 17 of the Notes to Consolidated Financial Statements. PC Ventures also has an ownership interest in the Partnership, and as a result, interest payments for this borrowing are funded by distributions to PC Ventures from the Partnership. PC Ventures has no other activities.

The Partnership is restricted from transferring assets and funds in the form of loans, advances or cash dividends to Plum Creek Timber Company, Inc. under the terms of certain debt agreements (see Note 8 of the Notes to Consolidated Financial Statements). Subject to certain restrictions, the Partnership can make loans or advances to Plum Creek Timber Company, Inc. Based on these provisions, at December 31, 2011, all of the Partnership’s Cash and Cash Equivalents ($254 million) are available to make restricted payments. At December 31, 2011, the Partnership and its consolidated subsidiaries had net assets of $1,263 million of which $1,009 million were restricted from being transferred by the Partnership to Plum Creek Timber Company, Inc.

Presented below is the condensed unconsolidated financial information for Plum Creek Timber Company, Inc. as of December 31, 2011 and 2010 and for each of the years in the three-year period ended December 31, 2011. The ownership of the Partnership and PC Ventures is presented using the equity method of accounting. As of December 31, 2011 and 2010, the undistributed earnings included in retained earnings (accumulated deficit) from an entity accounted for by the equity method were $17 million and $17 million, respectively.

Plum Creek Timber Company, Inc.

Condensed Unconsolidated Balance Sheet Data

(In Millions)	December 31, 2011			December 31, 2010
Assets
Investment in Consolidated Subsidiaries	$	1,263		$	1,374
Total Assets	$	1,263		$	1,374
Liabilities
Total Liabilities	$	—		$	—
Commitments and Contingencies
Stockholders’ Equity
Common Stock	2			2
Additional Paid-In Capital	2,261			2,243
Retained Earnings (Accumulated Deficit) and Other Equity	(28		)	51
Treasury Stock, at cost	(937		)	(911		)
Accumulated Other Comprehensive Income (Loss)	(35		)	(11		)
Total Stockholders’ Equity	1,263			1,374
Total Liabilities and Equity	$	1,263		$	1,374

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Plum Creek Timber Company, Inc.

Condensed Unconsolidated Statements of Income Data

	Year Ended
(In Millions)	December 31, 2011		December 31, 2010		December 31, 2009
Equity Earnings from Consolidated Subsidiaries	$	193	$	213	$	236
Net Income	$	193	$	213	$	236

Plum Creek Timber Company, Inc.

Condensed Unconsolidated Statements of Cash Flows Data

	Year Ended
(In Millions)	December 31, 2011			December 31, 2010			December 31, 2009
Cash Flows from Operating Activities:
Net Income	$	193		$	213		$	236
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Equity Earnings from Consolidated Subsidiaries	(193		)	(213		)	(236		)
Net Cash Provided By (Used In) Operating Activities	—			—			—
Net Cash Provided By (Used In) Investing Activities	—			—			—
Cash Flows From Financing Activities:
Cash Dividends	(272		)	(272		)	(275		)
Cash Distribution from Plum Creek Timberlands, L.P.	288			321			362
Proceeds from Stock Option Exercises	10			2			—
Acquisition of Treasury Stock	(26		)	(51		)	(87		)
Net Cash Provided By (Used In) Financing Activities	—			—			—
Increase In Cash and Cash Equivalents	—			—			—
Cash and Cash Equivalents:
Beginning of Year	—			—			—
End of Year	$	—		$	—		$	—

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NOTE 10. FAIR VALUE MEASUREMENTS

Assets and Liabilities Measured at Fair Value on a Recurring Basis. The company’s fair value measurements of its financial instruments, measured on a recurring basis, are categorized as Level 1 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 1 valuation is based on quoted prices in active markets at the measurement date for identical unrestricted assets or liabilities. Summarized below are the Level 1 assets reported in the company’s financial statements at fair value, measured on a recurring basis (in millions):

	Balance at December 31, 2011		Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	253	$	253
Available-for-Sale Securities (B)	31		31
Trading Securities (B)	5		5
Total	$	289	$	289
	Balance at December 31, 2010		Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	249	$	249
Available-for-Sale Securities (B)	30		30
Trading Securities (B)	5		5
Total	$	284	$	284

^(A)  Consists of several money market funds and is included in the $254 million and $252 million of Cash and Cash Equivalents in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010, respectively.

^(B)  Consists of several mutual funds and is included in Investment in Grantor Trusts in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010. At December 31, 2011, investments in these mutual funds were approximately 45% in domestic (U.S.) equities, 25% in international equities and 30% in debt securities.

Available-for-Sale Securities. Certain investments in the grantor trusts relate to the company's non-qualified pension plans and are classified as available-for-sale securities. The company has invested in various money market, debt and equity mutual funds and plans to use these investments to fund its non-qualified pension obligations. Unrealized holding gains and losses are included as a component of accumulated other comprehensive income. The company records changes in unrealized holding gains and losses in Other Comprehensive Income, unless an other than temporary impairment has occurred, which is then charged to expense. Changes in the fair value of available-for-sale securities were not material to the company's financial position or results of operations. See Note 11 of the Notes to Consolidated Financial Statements.

Trading Securities. Certain investments in the grantor trusts relate to the company's deferred compensation plans and are classified as trading securities. Deferred compensation amounts are invested in various money market, debt and equity mutual funds. The company plans to use these investments to fund deferred compensation obligations. Realized gains and losses and changes in unrealized gains and losses (and a corresponding amount of compensation expense) are recognized in the company's Consolidated Statements of Income. Deferred compensation obligations are included in Other Liabilities and were $5 million at December 31, 2011 and $5 million at December 31, 2010. Changes in the fair value of trading securities were not material to the company's financial position or results of operations.

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Other Instruments. The carrying amount of notes receivable approximates fair value due to the short-term maturities of these instruments. The estimated fair value of the company's debt was approximately $2.98 billion and $2.83 billion at December 31, 2011 and December 31, 2010, respectively, and the carrying amount was $2.77 billion and $2.69 billion at December 31, 2011 and December 31, 2010, respectively. The fair value of the company's Public Debt (publicly issued Senior Notes) is estimated using market quotes. The fair value of the company's Private Debt (Senior Notes with various maturities and fixed interest rates which are privately placed with various lenders) is estimated using the same rates adjusted for the different maturities. The fair value of the company's Note Payable to Timberland Venture is estimated using the same rates as the Public Debt adjusted by an estimated risk premium for holding company debt and the different maturity. The fair value of our Term Credit Agreement was determined by adjusting the spread over LIBOR to a current market spread for comparable debt.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis. The company’s fair value measurements of its assets and liabilities, measured on a nonrecurring basis, are categorized as Level 3 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 3 valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

There were no fair value measurements of assets or liabilities measured on a nonrecurring basis during the year ended December 31, 2011.

Summarized below are the Level 3 assets and liabilities reported in the company’s financial statements at fair value, measured on a nonrecurring basis, during the year ended December 31, 2010 (in millions):

	2010		Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements)		Net Gain (Loss)
Timberlands Held for Sale (A)	$	2	$	2	$	(1	)
Total					$	(1	)

^(A)  During 2010, timberlands held for sale with a carrying value of $3 million were written down to their fair value (net of estimated selling costs) of $2 million, resulting in a loss of $1 million, which was included in earnings for the year ended December 31, 2010. These timberlands were sold in 2011. The fair value was based on an external appraisal which was derived from a combination of comparable sales and discounted future cash flows. The discounted future cash flows were based on estimated future timber prices and related operating expenses using internal and external projections.

NOTE 11. STOCKHOLDERS' EQUITY

At December 31, 2011, Plum Creek had the following authorized capital of which 161.3 million shares of common stock were issued and outstanding:

• 300,634,566 shares of common stock, par value $.01 per share;

• 150,000,001 shares of excess stock, par value $.01 per share; and

• 75,000,000 shares of preferred stock, par value $.01 per share.

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The Board of Directors, from time to time, has authorized a share repurchase program. The table below summarizes the share repurchases pursuant to this program for the years ended December 31:

	2011		2010		2009
Shares of Common Stock (in millions)	0.7		1.4		3.3
Total Cost of Shares (in millions)	$	25	$	50	$	87
Average Cost per Share	$	34.84	$	36.37	$	26.57

At December 31, 2011, $175 million is available for share repurchases under the current Board of Directors authorization.

Comprehensive Income

Comprehensive income includes net income, actuarial gains and losses associated with our defined benefit pension plans and unrealized gains and losses on available-for-sale securities. Comprehensive income was as follows for the years ended December 31 (in millions):

	Pretax Amount			Tax Expense (Benefit)			After-Tax Amount
December 31, 2009
Net Income							$	236
Unrealized Holding Gains	$	5		$	—		5
Defined Benefit Plans:
Actuarial Gain	3			1			2
Reclassification to Net Income	7			2			5
Total Comprehensive Income							$	248
December 31, 2010
Net Income							$	213
Unrealized Holding Gains	$	2		$	—		2
Defined Benefit Plans:
Actuarial Gain	6			2			4
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	221
December 31, 2011
Net Income							$	193
Unrealized Holding Losses	$	(1	)	$	—		(1		)
Defined Benefit Plans:
Actuarial Loss	(31		)	(6		)	(25		)
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	169

The components of accumulated other comprehensive income, net of tax, were as follows at December 31 (in millions):

	2011			2010
Net Unrealized Holding Gains	$	6		$	7
Defined Benefit Plans:
Net Loss	(41		)	(18		)
	$	(35	)	$	(11	)

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NOTE 12. EMPLOYEE PENSION AND RETIREMENT PLANS

Pension Plan—General. The company provides defined benefit pension plans that cover substantially all employees of the company. Most of the company’s salaried and all hourly employees who complete one year of service in which they work at least 1,000 hours are eligible to participate in the plan. Participants vest after three years of service. The cash balance benefits for salaried employees is determined based primarily on certain percentages of compensation, age, years of service and interest accrued based on the 30-year Treasury bond rate. Participants who were employees of the company on September 1, 2000, earn benefits based on the greater of the cash balance formula or a monthly pension benefit that is principally based on the highest monthly average earnings during any consecutive sixty-month out of 120-month period and the number of years of service credit. The benefits to hourly employees are generally based on a fixed amount per year of service.

The company maintains a qualified defined benefit pension plan and two non-qualified defined benefit pension plans. Assets related to the non-qualified plans are held in a grantor trust and are subject to the claims of creditors in the event of bankruptcy. As a result, pension assets for the non-qualified plans are not considered plan assets, and therefore, have not been netted against our pension liability. Pension assets for the non-qualified plans are included in “Investment in Grantor Trusts” and the related pension liability is included in “Other Current Liabilities” and “Other Liabilities” in our Consolidated Balance Sheets.

Funded Status. The following table provides a reconciliation of benefit obligations, plan assets, and funded status of the plans for the years ended December 31 (in millions):

	2011			2010
Change in Benefit Obligation
Benefit Obligation at Beginning of Period	$	135		$	130
Service Cost	6			6
Interest Cost	8			7
Actuarial Loss	21			1
Benefits Paid	(6		)	(9		)
Benefit Obligation at End of Period	$	164		$	135
Change in Plan Assets
Fair Value of Plan Assets at Beginning of Period	$	106		$	96
Actual Return on Plan Assets	(3		)	14
Employer Contributions	3			5
Benefits Paid	(6		)	(9		)
Fair Value of Plan Assets at End of Period	100			106
Funded Status—December 31	$	(64	)	$	(29	)
Amounts Recognized in the Consolidated Balance Sheet
Current Liabilities	$	4		$	3
Other Long-Term Liabilities	60			26
Total	$	64		$	29

Note: The Benefit Obligation reflects both the qualified and non-qualified (supplemental) plans while the Plan Assets reflects only the qualified plan. The actuarial loss reflected in the change in benefit obligation for 2011 is due primarily to a change in interest rate assumptions for measuring our pension liabilities as of December 31, 2011.

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The following table sets forth the benefit obligation, accumulated benefit obligation, plan assets, and assets held in the grantor trust for the qualified and non-qualified pension plans as of December 31 (in millions):

	Qualified Pension Plan				Non-Qualified Pension Plans
	2011		2010		2011		2010
Projected Benefit Obligation	$	128	$	106	$	36	$	29
Accumulated Benefit Obligation	120		101		31		25
Plan Assets	100		106		N/A		N/A
Assets Held in the Grantor Trust	N/A		N/A		31		30

Pension contributions are significantly impacted by investment returns and changes in interest rates. It is generally the company’s policy to fund the qualified plan annually such that the fair value of plan assets equals or exceeds the actuarially computed accumulated benefit obligation (the approximate actuarially computed current pension obligation if the plan was discontinued) over a market cycle (generally 3 to 5 years). During 2011, the company contributed $3 million to the qualified pension plan and did not make any contributions to its grantor trust associated with the non-qualified plans. During 2010, the company contributed $4 million to the qualified pension plan and contributed $1 million to its grantor trust associated with the non-qualified plans. Based on current interest rates and expected returns, the company expects 2012 contributions to the qualified pension plan to range between $3 million and $7 million. During 2012, the company expects to contribute between $0 million and $2 million to its grantor trust associated with the non-qualified plans.

Pension Cost and Assumptions. The components of pension cost recognized in net income are as follows for the years ended December 31 (in millions):

	2011			2010			2009
Service Cost	$	6		$	6		$	7
Interest Cost	8			7			8
Expected Return on Plan Assets	(7		)	(7		)	(8		)
Recognized Actuarial Loss	2			2			2
Settlement Loss	—			—			5
Total Pension Cost	$	9		$	8		$	14

During 2009, the company permanently closed two lumber mills, curtailed two lumber mills and had additional employee terminations. The majority of the employees terminated elected to receive a lump-sum distribution from the pension plan. In accordance with the accounting for settlements, curtailments and certain termination benefits, we recorded a $5 million settlement loss as a result of the lump-sum distributions for the year ended December 31, 2009. The settlement loss represents a partial recognition of the actuarial pension loss reflected in accumulated other comprehensive income. It is the company’s accounting policy to recognize a settlement gain or loss when total settlements for the year exceed the sum of the current period interest and service costs.

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The components of pension cost recognized in comprehensive income are as follows for the years ended December 31 (in millions):

	2011			2010			2009
Net Actuarial Loss (Gain)	$	31		$	(6	)	$	(3	)
Amortization of Net Actuarial Loss	(2		)	(2		)	(2		)
Effect of Settlements and Curtailments	—			—			(5		)
Total (Gain) Loss Recognized in Other Comprehensive Income	$	29		$	(8	)	$	(10	)
Combined Pension Cost Recognized in Comprehensive Income	$	38		$	—		$	4

Amounts included in accumulated other comprehensive income are as follows as of December 31 (in millions):

	2011			2010
Net Loss	$	53		$	24
Deferred Tax Benefit	$	(12	)	$	(6	)

During 2012, we expect $4 million of the $53 million net actuarial loss to be included as a component of our total pension cost.

The qualified pension plan allows terminated employees to elect to receive pension benefits either as a lump-sum distribution or as annuity payments. The non-qualified plans only provide for lump-sum distributions. Management estimates that approximately half of the qualified plan participants will elect a lump-sum payment upon termination. Therefore, approximately 50% of the benefit obligation for the qualified plan is discounted based on high quality corporate bond yields while approximately 50% of the qualified plan and 100% of the non-qualified plans are discounted based on yields on 30-year U.S. Treasury bonds. Weighted-average assumptions used to determine benefit obligation are as follows:

	December 31, 2011		December 31, 2010
Discount Rates
Annuity Distributions	4.95	%	5.90	%
Lump-Sum Distributions	3.02	%	4.19	%
Rate of Compensation Increase	3.45	%	3.45	%

Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31:

	2011		2010		2009
Discount Rate	5.90	%	5.90	%	6.85	%
Expected Long-Term Return on Plan Assets	7.50	%	7.75	%	7.75	%
Rate of Compensation Increase	3.45	%	3.45	%	3.70	%

To develop the expected long-term rate of return on plan assets assumption, the company considered the current level of expected returns on risk-free investments (primarily government bonds), the historical level of the risk premium associated with the other asset classes in which the portfolio is invested and the expectations for future returns on each asset class. The expected return for each asset class was then weighted based on the target asset allocation to develop the expected long-term rate of return on plan assets assumption for the portfolio. This resulted in the selection of the 7.50% assumption as of January 1, 2011 and the 7.75% assumption as of January 1, 2010.

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The market related value of plan assets for the qualified plan is a calculated value that spreads unexpected investment returns over three years. The market-related value of assets held in a grantor trust for the non-qualified plans is fair market value. There has been no change in the method for determining the market-related value of assets since the prior valuation.

Investment Policies and Strategies. Investment allocation decisions are made to achieve maximum returns at a reasonable risk for the company’s pension assets over a full market cycle and are made without regard to future pension obligations. At December 31, 2011, target allocations for the various asset classes are as follows:

Large Capitalization Domestic Equities	32	%
Small and Mid-Size Capitalization Domestic Equities	7	%
International Equities	26	%
Fixed Income	35	%

The company currently uses actively managed funds and index funds, utilizing seven fund managers, to capture favorable returns in various asset classes and to diversify risk. Mutual funds invest in a diversified portfolio. Equity Securities and Collective Trust Funds are invested in a diversified portfolio whereby no more than 5% of an equity portfolio can be invested in a single company and fund managers are expected to be well diversified with respect to industry and economic sectors. Equity investments are limited to common stocks, common stock equivalents and preferred stock. Additionally, no more than 10% of a fixed income portfolio can be invested in a single issuer (other than U.S. treasuries). Fixed income investments are limited to U.S. treasuries, agencies of the U.S. Government, domestic corporations, municipalities, domestic banks and other U.S. financial institutions. Pension assets are analyzed at least quarterly and rebalanced as needed to maintain the target allocations.

Over a full market cycle, the investment goals (net of related fees) for the company’s various asset classes are as follows:

• Large Cap. Domestic Equities—For actively managed funds performance should exceed the applicable benchmark (e.g., Russell 1000 Growth or Russell 1000 Value Indexes) by 0.50% per annum, while index funds should match the performance of the applicable benchmark (e.g. S&P 500 Index).

• Small and Mid. Cap. Domestic Equities—For index funds performance should match the applicable benchmark (e.g. Russell 2000 Index).

• International Equities—For actively managed funds performance should exceed the applicable benchmark (e.g. MSCI EAFE Index) by 1.00% per annum, while index funds should match the performance of the applicable benchmark (e.g. MSCI Emerging Markets Index).

• Fixed Income Securities—Fund performance should exceed the applicable benchmark (e.g., Barclays Capital Aggregate Bond, Barclays Capital High Yield, or Barclays Capital U.S. Credit Indexes) by 0.25% per annum.

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Fair Value of Pension Plan Assets. The fair values of each major class of plan assets were as follows as of December 31, 2011 (in millions):

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	11		—		—		11
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	11		—		—		11
Small and Mid. Cap. Domestic Equity Securities	7		—		—		7
International Equity Securities	25		—		—		25
Fixed Income Securities	30		—		—		30
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		5		—		5
Total Investments Measured at Fair Value	$	84	$	16	$	—	$	100

The fair values of each major class of plan assets were as follows as of December 31, 2010 (in millions):

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	12		—		—		12
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	12		—		—		12
Small and Mid. Cap. Domestic Equity Securities	8		—		—		8
International Equity Securities	28		—		—		28
Fixed Income Securities	29		—		—		29
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		6		—		6
Total Investments Measured at Fair Value	$	89	$	17	$	—	$	106

The valuation techniques and inputs used to measure fair value for each major class of plan assets were as follows (there have been no changes in these techniques and inputs during the year ended December 31, 2011):

• The fair value of equity securities (common stocks) and mutual funds is derived from quoted market prices in active markets at the measurement date.

• The fair value of the underlying assets of the collective trust funds is determined using the net asset values.

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The net asset values are based on the fair value of the underlying assets of the funds, minus their liabilities, and then divided by the number of units outstanding at the valuation date. The funds are traded on private markets that are not active; however, the unit price is based primarily on observable market data of the fund’s underlying assets.

Projected Benefit Payments. The following table presents expected future benefit payments projected based on the same assumptions used by the company to measure the benefit obligation and estimate future employee service (in millions):

Year	Projected Benefit Payments
2012	$	13
2013	13
2014	13
2015	13
2016	14
2017 through 2021	72

Thrift and Profit Sharing Plan. The company sponsors an employee thrift and profit sharing plan under Section 401(k) of the Internal Revenue Code. This plan covers substantially all full-time employees. The company matches employee contributions of up to six percent of compensation at rates ranging from 35% to 100%, depending upon financial performance.

The employer match was 100% for 2011, 2010 and 2009. Amounts charged to expense relating to the company’s thrift and profit sharing plan were $4 million in 2011, 2010 and 2009.

NOTE 13. SHARE-BASED COMPENSATION PLANS

Plum Creek has a stockholder approved Stock Incentive Plan that provides for the award of non-qualified stock options, restricted stock and restricted stock units, value management awards and dividend equivalents. No dividend equivalents have been awarded since 2005.

Under Plum Creek’s Stock Incentive Plan (“the Plan”), there are 12.4 million shares of common stock reserved and eligible for issuance. At December 31, 2011, 6.3 million shares of the 12.4 million reserved shares have been used and, therefore, 6.1 million shares remain available for grants of non-qualified stock options, grants of restricted stock and restricted stock units, or payments of vested value management awards. The number of shares to be issued in connection with value management awards is not determined until the end of their respective performance periods. New shares are issued for payment under the Plan for awards that pay out in shares or where the participant can elect payment in shares.

Stock Options. Under the Plan, non-qualified stock options may be granted to any officer, director, employee, consultant or advisor of the company. Each stock option granted allows the recipient the right to purchase the company’s common stock at the fair market value of the company’s common stock on the date of the grant. Generally, the stock options have a ten-year term and vest over a four-year period at a rate of 25% per year. Under the Plan, the exercise price of an option may not be reduced. The company does not plan to grant any stock option awards in 2012. Currently, the company intends to eliminate stock option grants from annual incentive awards and redistribute the value of these grants between Restricted Stock Units and Value Management Awards.

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Presented below is a summary of Plum Creek’s stock option Plan activity for the year ended December 31, 2011:

	Shares Subject to Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value (Millions)
Balance at January 1, 2011	3,291,305		$	35.59
Granted	579,350		41.55
Exercised/Surrendered	(327,280	)	30.52
Cancelled/Forfeited	(2,450	)	38.33
Outstanding, December 31, 2011	3,540,925		$	37.03	5.9	$	6
Vested or Expected to Vest, December 31, 2011	3,246,281		$	36.90	5.8	$	6
Exercisable, December 31, 2011	2,164,465		$	36.23	4.5	$	5

The table below presents stock activity related to stock options exercised during the years ended December 31 (in millions):

	2011		2010		2009
Proceeds from Stock Options Exercised	$	10	$	2	$	—
Intrinsic Value of Stock Options Exercised	$	4	$	1	$	—
Tax Benefit Related to Stock Options Exercised	$	1	$	—	$	—

The weighted-average measurement date fair values of stock option awards granted were computed using the Black-Scholes-Merton option valuation model with the following assumptions for the years ended December 31:

	2011			2010			2009
Expected Term (years)	6			6			6
Risk-Free Interest Rate	2.7		%	2.7		%	2.0		%
Volatility	40.6		%	40.3		%	35.5		%
Dividend Yield	4.0		%	4.8		%	5.0		%
Weighted-Average Measurement Date Fair Value	$	11.60		$	9.00		$	7.02

The expected term of the options represents the estimated period of time until exercise and is based on the vesting period of the award and the historical exercise experience of similar awards. All participants were assumed to have similar exercise behavior. Expected volatility is based on historical volatility over the approximate expected term of the option.

Restricted Stock. Under the Plan, restricted stock of the company may be awarded to certain directors, officers and employees of the company. Restricted stock may not be sold, assigned, transferred, pledged or otherwise disposed of for a period of time from the date on which the restricted stock was granted. The recipients of restricted stock generally have the rights of stockholders of the company with respect to voting and receipt of dividends during the restricted period. Restricted stock generally vests six months from the grant date. The weighted-average grant date fair values of restricted stock awards granted for the years ended December 31, 2011, 2010 and 2009 were $41.99, $35.60 and $31.32, respectively. The fair value of restricted stock is based on the closing price of Plum Creek’s common stock on the date of grant.

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Restricted stock awards activity was as follows for the year ended December 31, 2011:

	Shares		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	—		$	—
Granted	16,000		$	41.99
Vested	(16,000	)	$	41.99
Forfeited	—		$	—
Balance at December 31, 2011	—		$	—

The total fair value of restricted stock awards that vested during the years ended December 31, 2011, 2010 and 2009 was $0.7 million, $0.6 million and $0.6 million, respectively.

Restricted Stock Units. Under the Plan, restricted stock units may be awarded to certain directors, officers and employees of the company. The recipients of restricted stock units generally have the right to receive a cash amount equal to any dividends paid on the company’s common stock during the restriction period and upon vesting, the right to receive an equal number of shares of the company’s common stock. Restricted stock units generally vest over a four-year period at a rate of 25% per year. If employment is terminated prior to vesting, all unvested restricted stock units are forfeited. The weighted-average grant date fair value of restricted stock units granted for the years ended December 31, 2011, 2010 and 2009 was $41.45, $35.27 and $33.73, respectively. The fair value of restricted stock units is based on the closing price of the company’s common stock on the date of grant.

Restricted stock unit activity was as follows for the year ended December 31, 2011:

	Units		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	247,866		$	37.09
Granted	103,760		$	41.45
Vested	(107,386	)	$	38.66
Forfeited	(440	)	$	38.34
Balance at December 31, 2011	243,800		$	38.25

The total fair value of restricted stock units that vested during the years ended December 31, 2011, 2010 and 2009, was approximately $4 million, $3 million and $2 million, respectively.

Value Management Awards. Value management awards provide incentive compensation to participants that is contingent upon the company’s performance over a three-year period measured separately against the performance of peer groups consisting of forest products companies, the S&P 500 Index and the Morgan Stanley REIT Index over the same period.

Value management awards are earned in whole or in part based on a sliding scale. No value management award is earned if the company’s total shareholder return is below the 50^th percentile of the peer group. The full value management award is earned if the company’s total shareholder return is above the 75^th percentile. A unit has a face value of $100. The value of an award between the 50^th and 75^th percentiles is based on a sliding scale between 0% and 200% of the face value. Amounts earned, if any, are paid in the quarter immediately following the end of the three-year performance period. Unless otherwise specified by the participant, each payment will be paid in cash, except that any officer not in compliance with the company’s stock ownership guidelines is required to receive up to half of the payment value in

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the company’s common stock. Generally, to be entitled to the payment, a participant must be employed by the company on the last day of the performance period.

Different performance ranges are expected to be established for the 2012 grant of value management awards. A unit granted in 2012 will have no value below the 25^th percentile and will have full value at the 85^th percentile or above. Performance between the 25^th percentile and the 85^th percentile is expected to be based on a sliding scale between 0% and 200% of face value.

Value management awards activity was as follows for the year ended December 31, 2011:

	Units
Balance at January 1, 2011	211,080
Grants	80,730
Vested	(64,545	)
Forfeitures	(400	)
Balance at December 31, 2011	226,865

Presented below is a summary of outstanding value management awards and related fair values, unrecognized compensation expense and maximum value as of December 31, 2011 (dollars in millions):

Performance Period	Outstanding Units	Fair Value (A)		Unrecognized Compensation Expense		Maximum Award Value (B)
2009 to 2011	68,945	$	0.0	$	0.0	$	13.8
2010 to 2012	77,340	$	3.0	$	0.9	$	15.5
2011 to 2013	80,580	$	6.4	$	3.6	$	16.1

^(A)  The estimated fair value includes unrecognized compensation expense.

^(B)  Maximum award value is based on a unit value of $200.

Presented below is a summary of earned and paid (primarily in cash) value management awards for the following three-year performance periods:

Performance Period	Payout Value per Unit		Total Payout (millions)		Payment Date
2009 to 2011	$	0	$	0.0	Not Earned
2008 to 2010	$	0	$	0.0	Not Earned
2007 to 2009	$	200	$	11.1	1st Quarter 2010
2006 to 2008	$	200	$	10.6	1st Quarter 2009

Measurement of Compensation Costs for Value Management Awards. Grants of value management awards are classified and accounted for as liabilities. As a result, the expense recognized over the performance period for value management awards will equal the fair value (i.e., cash value) of an award as of the last day of the performance period multiplied by the number of awards that are earned. The quarterly expense is recognized during the performance period based on the fair value of value management awards as of the end of the most recent quarter. Prior to the end of the performance period, compensation costs for value management awards are based on the awards’ most recent quarterly fair values and the number of months of service rendered during the performance period.

Fair values for value management awards are computed based on our historical relative total shareholder return compared to the peer group from the beginning of the performance period to the end of the most recent quarter, and

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our simulated relative total shareholder return through the end of the performance period. The simulated total shareholder return of the company and the peer group is computed using a Monte Carlo simulation. The key assumptions used in the simulation of the company’s and the peer group’s total shareholder return are volatility, beta (the measure of how Plum Creek’s stock moves relative to the market as a whole) and risk-free interest rate.

Accounting for Share-Based Compensation. Share-based employee compensation cost is recognized based on fair value (see “Accounting for Share-Based Compensation” in Note 1 of the Notes to Consolidated Financial Statements). Stock options and most restricted stock units vest 25% per year over a four-year vesting period. Compensation cost related to these awards is recognized using the straight-line method over the four-year vesting period. Total compensation expense for all share-based compensation plans (including both awards paid in stock and cash) was approximately $10 million, $5 million and $12 million for the years ended December 31, 2011, 2010, and 2009, respectively. For the years ended December 31, 2011, 2010 and 2009, the company recognized $2 million, $1 million and $2 million, respectively, in tax benefits associated with share-based compensation plans. At December 31, 2011, there was $17 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plan. That cost is expected to be recognized over a weighted-average period of approximately two years.

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NOTE 14. DETAIL OF CERTAIN BALANCE SHEET ACCOUNTS

Certain balance sheet accounts consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Other Current Assets
Prepaid Expenses	$	7	$	6
Taxes Receivable	3		2
Notes Receivable	2		5
Cash Held in Escrow	—		9
Other	3		2
	$	15	$	24
Other Non-Current Assets
Real Estate Development Properties	$	13	$	14
Unamortized Debt Issue Costs	8		11
Deposits	5		5
Notes Receivable	8		10
Other	2		4
	$	36	$	44
Other Current Liabilities
Accrued Pension Liability	$	4	$	3
Workers’ Compensation	2		2
Other	2		2
	$	8	$	7
Other Non-Current Liabilities
Timber Obligations	$	6	$	6
Deferred Compensation	5		5
Long-Term Incentive Compensation	3		2
Accrued Pension Liability	60		26
Deferred Revenue	20		22
Workers’ Compensation	10		10
Other	4		5
	$	108	$	76

NOTE 15. COMMITMENTS AND CONTINGENCIES

Contingencies. The company is subject to regulations regarding forest, harvest and manufacturing practices and is, from time to time, involved in various legal proceedings, including environmental and regulatory matters, incidental to its business. Reserves have been established for any probable losses.

Unrecorded Contingencies. Management currently believes that resolving pending legal proceedings against the company, individually or in aggregate, will not have a material adverse impact on our financial position or results of operations. However, these matters are subject to inherent uncertainties and management’s view on these matters may change in the future. Were an unfavorable final outcome in one or multiple legal proceedings to occur, there exists the possibility of a material adverse impact on our financial position and the results of operations for the period in which

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any unfavorable outcome becomes reasonably estimable.

Contractual Obligations. The company has contracted to source logs and supply fiber with customers under long-term agreements at prevailing market rates. The agreements expire beginning in 2012 through 2029, with various renewal options by either party for periods ranging from two years to fifteen additional years.

Unconditional Purchase Obligations. During 2011, the company entered a long-term agreement for the purchase of urea which will primarily be used in applying fertilizer to our timberlands to improve growth rates. The company is obligated to purchase fixed quantities of urea each year for a fifteen-year period upon the completion of the supplier's manufacturing facility and starting no later than 2014. The price per ton for urea is generally fixed; however, certain components of the price are subject to adjustment for inflation or the cost of raw materials, and the overall price per ton is subject to a cap and floor. Management does not expect these pricing adjustments will be significant and estimates that starting in 2014 annual payments under the supply agreement will be $15 million or $230 million over the life of the purchase agreement.

Lease Commitments. The company leases buildings and equipment under non–cancelable operating lease agreements. Operating lease expense was $3 million, $4 million, and $5 million in 2011, 2010 and 2009, respectively. Additionally, the company has timber obligations related to certain timberlands where the company acquired title to standing timber at the inception of the leases. The following summarizes the future minimum operating lease payments and obligations in connection with leasing timberlands at December 31, 2011 (in millions): 

	Operating Leases		Timber Obligations
2012	$	3	$	1
2013	3		1
2014	2		—
2015	2		—
2016	1		—
Thereafter	1		4
Total	$	12	$	6

NOTE 16. TIMBERLAND VENTURE - EQUITY METHOD INVESTMENT

In 2008, the company contributed 454,000 acres of timberlands located in its Southern Resources Segment to Southern Diversified Timber, LLC (“the Timberland Venture”) in exchange for a $705 million preferred interest and a 9% common interest valued at $78 million. The Timberland Venture’s other member, an affiliate of The Campbell Group LLC, contributed $783 million of cash in exchange for 91% of the Timberland Venture’s common interest. Following the contribution, the company borrowed $783 million from the Timberland Venture (“Note Payable to Timberland Venture”).

The preferred interest is entitled to a cumulative preferred return equal to 7.875% per annum (approximately $56 million). No distributions can be made on the common interests until all current period and prior period preferred returns have been paid. Preferred return distributions are payable on March 15th and September 15th each year.

The annual interest rate on the Note Payable to Timberland Venture is fixed at 7.375%, resulting in annual interest expense of approximately $58 million. During the 10-year term of the note, interest is paid quarterly with the principal due upon maturity.

The activities of the Timberland Venture consist primarily of the ownership of timberlands and entering into cutting contracts with an affiliate of The Campbell Group for the sale and harvesting of timber. An affiliate of The Campbell Group is the manager of the Timberland Venture. The manager and the other member control the day-to-day operating

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decisions of the Timberland Venture. Plum Creek retains certain protective rights that require its consent before the Timberland Venture can take certain actions. For example, without Plum Creek’s consent and subject to certain exceptions, the Timberland Venture generally cannot sell properties, incur indebtedness, file for bankruptcy or enter into contracts with affiliates which are not arm’s length.

No gain was recognized in connection with the contribution of the timberlands to the venture in 2008. The book basis in the contributed timberlands was $174 million, and the company capitalized costs of $9 million in connection with the transfer. The Timberland Venture recorded the contributed timberlands at fair value, or $783 million. The difference between the beginning book basis in the venture ($174 million) and the company’s share of the equity in the net assets of the venture ($783 million) was allocated between standing timber ($289 million) and land ($320 million). In addition to the allocation of earnings to our common and preferred interests, the basis difference associated with standing timber is amortized into equity earnings based on the timber harvested during the period compared to the timber expected to be harvested over one timber rotation (approximately 27 years). The basis difference associated with land is recognized in equity earnings in the period in which timberlands are sold by the venture based on a per acre rate. Since the inception of the Timberland Venture through December 31, 2011, the company has recognized $21 million in equity earnings related to the amortization of the basis difference.

Both our preferred and common interests are accounted for based on the equity method of accounting. Equity earnings of the Timberland Venture are first allocated to our preferred interest to the extent of our preferred return with any excess earnings allocated among the common interests based on ownership percentage (i.e., 9% to our common interest). All of the equity earnings will be allocated to our preferred interest in years in which our preferred return equals or exceeds the earnings of the Timberland Venture. To the extent of any shortfall in equity earnings (cumulative preferred return in excess of allocated equity earnings), future years’ earnings will be allocated to our preferred interest when the earnings of the Timberland Venture exceed our preferred return. At December 31, 2011, the cumulative shortfall in allocated equity earnings is $20 million. In addition to equity earnings associated with our common and preferred interests, equity earnings include the amortization of the difference between the book basis of our investment in the Timberland Venture and our share of the Timberland Venture’s net assets. Equity earnings for the Timberland Venture consist of the following for the years ended December 31 (in millions):

	2011		2010		2009
Preferred Interest	$	50	$	50	$	48
Common Interest	—		—		—
Amortization of Basis Difference	6		7		7
Total Equity Earnings from Timberland Venture	$	56	$	57	$	55

Distributions from the Timberland Venture consist of the following for the years ended December 31 (in millions):

	2011		2010		2009
Preferred Interest	$	56	$	56	$	53
Common Interest	—		1		—
Total Distributions from Timberland Venture	56		57		53

The Timberland Venture can only be liquidated with the consent of both members. However, upon the nine year anniversary of the Timberland Venture, Plum Creek has the right for a six-month period to cause the Timberland Venture to redeem the other member’s interest. The other Timberland Venture member has a similar redemption right after the seven year anniversary. Upon liquidation or redemption, the members’ interests (i.e. capital accounts) will be adjusted to reflect the fair value of the Timberland Venture’s net assets. The adjustment would first be allocated to our preferred interest if there exists an accumulated shortfall in net income attributable to our preferred interest but only to the extent that the fair value of the net assets of the Timberland Venture exceed book basis.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

For the years ended December 31, 2011, 2010 and 2009, the Timberland Venture was considered a Significant Subsidiary in accordance with the financial reporting requirements of the Securities and Exchange Commission. Accordingly, the audited financial statements of the Timberland Venture are attached as an exhibit to the company’s 2011 Form 10-K filing.

NOTE 17. VARIABLE INTEREST ENTITIES

The Timberland Venture (see Note 16 of the Notes to Consolidated Financial Statements) is a variable interest entity. The primary operating activities of the Timberland Venture consist of owning timberlands and entering into cutting contracts with an affiliate of the other member. Besides quarterly interest payments on the Note Payable to Timberland Venture, the company has not provided financing or other support to the venture. The venture is financed by a $15 million line of credit obtained by the Timberland Venture.

We are not the primary beneficiary of the Timberland Venture. The company does not manage the day-to-day operations of the Timberland Venture, has only limited protective rights and its involvement is generally limited to receiving distributions on its preferred and common interests. We are not the primary beneficiary because we do not direct the activities that most significantly impact the Timberland Venture’s economic performance. We believe that the activities that most significantly impact the Timberland Venture’s economic performance include managing the timberlands along with the timing and extent of the harvesting activities, neither of which we control.

The carrying amount of the investment is $201 million at December 31, 2011 and $201 million at December 31, 2010, and it is reported in the Consolidated Balance Sheets as Equity Investment in Timberland Venture. Our maximum exposure to loss is $201 million, the carrying amount of the investment. Generally, losses are first allocated among the common interests based on positive capital accounts in which we hold a 9% common interest. No losses are allocated to our preferred interest ($705 million) until the common interests have absorbed losses of approximately $861 million.

NOTE 18. RELATED PARTY TRANSACTIONS

The company has a common and preferred interest in Southern Diversified Timber, LLC (“the Timberland Venture”), which is accounted for under the equity method of accounting. See Note 16 of the Notes to Consolidated Financial Statements.

Equity earnings and distributions from the Timberland Venture were as follows for the years ended December 31 (in millions): 

	2011		2010		2009
Equity Earnings	$	56	$	57	$	55
Distributions	56		57		53

In 2008, the company borrowed $783 million from the Timberland Venture for a 10-year term at a fixed annual interest rate of 7.375%. The related party obligation is included in the Consolidated Balance Sheet as Note Payable to Timberland Venture. Interest expense and paid with respect to the Note Payable to Timberland Venture were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Interest Expense	$	58	$	58	$	58
Interest Payments	58		58		58

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As a result, the company had accrued interest payable for the Note Payable to Timberland Venture at December 31 (in millions):

	2011		2010
Interest Payable (to related party)	$	7	$	7

NOTE 19. SEGMENT INFORMATION

The company is organized into five operating segments based on the nature of the business activities of each component. Each operating segment has a separate management team. The measurement of operating segment results is generally consistent with the presentation of the Consolidated Statements of Income. Intersegment Revenues are recorded at market prices, which are determined at least quarterly, and are eliminated in the consolidated results. Several operating segments have sales outside of the U.S. (see Export Revenues), but the company does not hold any long-lived foreign assets. These operating segments represent the company’s five reportable segments, which are: (1) Northern Resources, (2) Southern Resources, (3) Real Estate, (4) Manufactured Products and (5) Other.

Northern Resources Segment. The Northern Resources Segment consists of timberlands located in Maine, Michigan, Montana, New Hampshire, Oregon, Vermont, Washington, West Virginia and Wisconsin. The Northern Resources Segment grows timber for sale primarily in domestic regional markets. Additionally, some logs are sold in export markets, mainly to China and Canada. The Northern Resources Segment sells softwood and hardwood sawlogs and softwood and hardwood pulpwood. Softwood sawlogs are sold primarily to regional lumber and plywood manufacturers. Logs harvested in Montana are sold mostly to the company’s Manufactured Products Segment (see Intersegment Revenues). Hardwood sawlogs are sold primarily to regional lumber and plywood manufacturers. Softwood and hardwood pulpwood is sold to regional paper and packaging manufacturers.

Southern Resources Segment. The Southern Resources Segment consists of timberlands located in Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina and Texas. The Southern Resources Segment grows timber for sale in domestic regional markets. The Southern Resources Segment sells primarily softwood sawlogs and pulpwood. Softwood sawlogs are sold to regional lumber and plywood manufacturers. Softwood pulpwood is sold to regional paper and packaging manufacturers and also to producers of oriented strand board. Additionally, the Southern Resources Segment leases a portion of our timberlands to third parties on an annual basis for recreational purposes.

Real Estate Segment. The Real Estate Segment consists of sales of higher value timberlands and non-strategic timberlands. We estimate that included in the company’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. The company has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller scale transactions over the near and medium term. In addition to these 300,000 acres, the company may also make sales of non-strategic timberlands in larger scale transactions to commercial timberland buyers as opportunities arise. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries. Properties developed internally by the company will generally be low-intensity development limited to obtaining entitlements. Larger and more complicated projects needing more invested capital may be developed through third party ventures.

Manufactured Products Segment. The Manufactured Products Segment consists of two lumber mills (of which one mill is curtailed until markets improve), two plywood mills, two medium density fiberboard (“MDF”) facilities, one lumber remanufacturing facility in Idaho and one lumber remanufacturing facility in Montana (which is curtailed until markets

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improve). The lumber facilities produce boards, studs, and dimension lumber and the panel facilities produce high-quality plywood and MDF panels. All of these products are targeted to domestic wood products retailers, home construction, industrial customers, and to a lesser extent, for export primarily to Canada and Mexico. Residual chips that are not used internally may be sold to regional pulp and paper manufacturers. Revenues from manufactured products by product line were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Lumber	$	77	$	75	$	85
Plywood	75		73		62
MDF	121		117		98
Total	$	273	$	265	$	245

Other Segment. The Other Segment consists primarily of income associated with oil and natural gas production, mineral extraction and wind power development, along with communication and transportation rights of way. Some of these activities are conducted through our wholly-owned taxable REIT subsidiaries.

The company evaluates performance of the segments based on operating income before interest, unallocated corporate expenses and taxes. Asset information is not reported by segment, as the company does not produce such information internally.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

The tables below present information about reported segments for the years ended December 31 (in millions):

	Northern Resources			Southern Resources		Real Estate(A)		Manufactured Products(B)			Other(C)		Total(D)
2011
External Revenues	$	213		$	359	$	301	$	273		$	21	$	1,167
Intersegment Revenues	20			—		—		—			—		20
Export Revenues	26			—		—		25			—		51
Depreciation, Depletion and Amortization	26			51		2		13			—		92
Basis of Real Estate Sold	—			—		77		—			—		77
Other Operating Gain	—			—		—		—			2		2
Operating Income (Loss)	24			74		195		15			21		329
2010
External Revenues	$	192		$	377	$	336	$	265		$	20	$	1,190
Intersegment Revenues	18			—		—		—			—		18
Export Revenues	14			—		—		24			—		38
Depreciation, Depletion and Amortization	28			50		2		12			—		92
Basis of Real Estate Sold	—			—		132		—			—		132
Other Operating Gain	1			—		—		2			5		8
Operating Income (Loss)	13			107		180		24			23		347
2009
External Revenues	$	198		$	347	$	486	$	245		$	18	$	1,294
Intersegment Revenues	14			—		—		—			—		14
Export Revenues	11			—		—		21			—		32
Depreciation, Depletion and Amortization	30			51		1		23			—		105
Basis of Real Estate Sold	—			—		155		—			—		155
Operating Income (Loss)	(3		)	81		278		(23		)	17		350

^(A)  The company recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.

During 2009, the company completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.

During 2008, the company negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

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^(B)  During 2010, the company sold certain lumber manufacturing assets for a gain of $2 million. The gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

^(C)  During 2011, the company received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the company agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the company received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The company allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term.

^(D) Consolidated depreciation, depletion and amortization includes unallocated corporate depreciation of $4 million for 2011, 2010 and 2009.

A reconciliation of total segment operating income to income before income taxes is presented below for the years ended December 31 (in millions):

	2011			2010			2009
Total Segment Operating Income	$	329		$	347		$	350
Corporate and Other Unallocated Expenses	(55		)	(51		)	(51		)
Other Unallocated Operating Income (Expense), net	1			1			—
Operating Income	275			297			299
Equity Earnings from Timberland Venture	56			57			55
Total Interest Expense, net	(139		)	(138		)	(147		)
Gain (Loss) on Extinguishment of Debt	—			(13		)	(2		)
Income before Income Taxes	$	192		$	203		$	205

NOTE 20. SUBSEQUENT EVENTS

Quarterly Dividend. On February 7, 2012, the Board of Directors authorized the company to make a dividend payment of$0.42 per share, or approximately $68 million, which will be paid on March 2, 2012 to stockholders of record on February 17, 2012.

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NOTE 21. UNAUDITED SELECTED QUARTERLY FINANCIAL DATA

(In Millions, Except Per Share Amounts)	1st Quarter  (B)		2nd Quarter		3rd Quarter		4th Quarter  (C)
2011
Revenues	$	275	$	284	$	293	$	315
Gross Profit	85		88		93		112
Operating Income	60		63		69		83
Net Income	38		44		50		61
Net Income per Share—Basic(A)	$	0.23	$	0.27	$	0.31	$	0.38
Net Income per Share—Diluted(A)	$	0.23	$	0.27	$	0.31	$	0.38
2010
Revenues	$	317	$	258	$	259	$	356
Gross Profit	119		73		71		120
Operating Income	95		56		51		95
Income from Continuing Operations	76		35		32		59
Net Income	87		35		32		59
Net Income per Share—Basic(A)	$	0.54	$	0.21	$	0.20	$	0.37
Net Income per Share—Diluted(A)	$	0.54	$	0.21	$	0.20	$	0.37

^(A)  Net income per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly net income per share may not equal the total computed for the year.

^(B)  The company’s 2010 first quarter net income includes an $11 million ($0.07 per diluted share) Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

^(C)  During the fourth quarter of 2010, the company paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of

Plum Creek Timber Company, Inc.

We have audited the accompanying consolidated balance sheets of Plum Creek Timber Company, Inc. as of December 31, 2011 and 2010, and the related consolidated statements of income, stockholders’ equity, comprehensive income, and cash flows for each of the three years in the period ended December 31, 2011. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Plum Creek Timber Company, Inc. at December 31, 2011 and 2010, and the consolidated results of its operations, comprehensive income, and its cash flows for each of the three years in the period ended December 31, 2011, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), Plum Creek Timber Company, Inc.’s internal control over financial reporting as of December 31, 2011, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 24, 2012 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Seattle, Washington

February 24, 2012

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The Board of Directors and Stockholders of

Plum Creek Timber Company, Inc.

We have audited Plum Creek Timber Company, Inc.’s internal control over financial reporting as of December 31, 2011, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). Plum Creek Timber Company, Inc.’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, Plum Creek Timber Company, Inc. maintained, in all material respects, effective internal control over financial reporting as of December 31, 2011, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 2011 consolidated financial statements of Plum Creek Timber Company, Inc., and our report dated February 24, 2012 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Seattle, Washington

February 24, 2012

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ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA (CONTINUED)    

Included in this item are the consolidated financial statements related to Plum Creek Timberlands, L.P., a Delaware Limited Partnership and a wholly-owned subsidiary of Plum Creek Timber Company, Inc. These financial statements are provided pursuant to Rule 3-10 of Regulation S-X in connection with the shelf registration statement on Form S-3 filed in December of 2011 pursuant to which Plum Creek Timberlands, L.P. has registered and from time to time may offer and sell debt securities. As of December 31, 2011, Plum Creek Timberlands, L.P. has publicly issued and outstanding $1,033 million aggregate principal amount of Senior Notes ("Public Debt") pursuant to the shelf registration statement.

PLUM CREEK TIMBERLANDS, L.P.

CONSOLIDATED STATEMENTS OF INCOME

	Year Ended December 31,
(In Millions)	2011			2010			2009
REVENUES:
Timber	$	572		$	569		$	545
Real Estate	301			336			486
Manufacturing	273			265			245
Other	21			20			18
Total Revenues	1,167			1,190			1,294
COSTS AND EXPENSES:
Cost of Goods Sold:
Timber	445			421			431
Real Estate	92			148			200
Manufacturing	250			236			257
Other	2			2			1
Total Cost of Goods Sold	789			807			889
Selling, General and Administrative	106			95			106
Total Costs and Expenses	895			902			995
Other Operating Income (Expense), net	3			9			—
Operating Income	275			297			299
Equity Earnings from Timberland Venture	56			57			55
Interest Expense, net	81			80			89
Loss on Extinguishment of Debt	—			(13		)	(2		)
Income before Income Taxes	250			261			263
Provision (Benefit) for Income Taxes	(1		)	1			(31		)
Income from Continuing Operations	251			260			294
Gain on Sale of Properties, net of Tax	—			11			—
Net Income before Allocation to Series T-1 Preferred Interest and Partners	251			271			294
Net Income Allocable to Series T-1 Preferred Interest	(58		)	(58		)	(58		)
Net Income Available to Common Interest Partners	$	193		$	213		$	236

See accompanying Notes to Consolidated Financial Statements

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Year Ended December 31,
(In Millions)	2011			2010		2009
Net Income before Allocation to Series T-1 Preferred Interest and Partners	$	251		$	271	$	294
Other Comprehensive Income before Income Taxes:
Defined Benefit Pension Plans
Actuarial Gain (Loss)	(31		)	6		3
Plus: Amortization of Actuarial Loss Reclassified to Pension Expense	2			2		7
Unrealized Gains (Losses) on Grantor Trust Assets
Unrealized Holding Gains (Losses) Arising During Period	(1		)	2		5
Less: Reclassification for Gains (Losses) Recognized in Net Income	—			—		—
Other Comprehensive Income (Loss) Before Tax	(30		)	10		15
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income	(6		)	2		3
Other Comprehensive Income (Loss) After Tax	(24		)	8		12
Comprehensive Income	$	227		$	279	$	306

See accompanying Notes to Consolidated Financial Statements

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CONSOLIDATED BALANCE SHEETS

(In Millions)	December 31, 2011		December 31, 2010
ASSETS
Current Assets:
Cash and Cash Equivalents	$	254	$	252
Accounts Receivable	28		21
Inventories	48		49
Deferred Tax Asset	6		7
Assets Held for Sale	103		57
Other Current Assets	15		24
	454		410
Timber and Timberlands, net	3,377		3,405
Property, Plant and Equipment, net	138		146
Equity Investment in Timberland Venture	201		201
Deferred Tax Asset	17		10
Investment in Grantor Trusts ($36 and $35 at Fair Value in 2011 and 2010)	37		36
Other Assets	36		44
Total Assets	$	4,260	$	4,252
LIABILITIES
Current Liabilities:
Current Portion of Long-Term Debt	$	352	$	94
Line of Credit	348		166
Accounts Payable	25		25
Interest Payable	19		16
Wages Payable	20		23
Taxes Payable	9		12
Deferred Revenue	27		25
Other Current Liabilities	8		7
	808		368
Long-Term Debt	1,290		1,643
Other Liabilities	109		77
Total Liabilities	2,207		2,088
Commitments and Contingencies
PARTNERSHIP CAPITAL
Series T-1 Preferred Interest	790		790
Partners’ Capital (Common Partnership Interests)	1,263		1,374
Total Partnership Capital	2,053		2,164
Total Liabilities and Partnership Capital	$	4,260	$	4,252

See accompanying Notes to Consolidated Financial Statements

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(In Millions)	Preferred Partnership Interest			Common Partners’ Capital			Accumulated Other Comprehensive Income (Loss)			Total Partnership Capital
January 1, 2009	$	790		$	1,603		$	(31	)	$	2,362
Net Income before Allocation to Series T-1 Preferred Interest and Partners				294						294
Other Comprehensive Income							12			12
Net Income Allocation to Series T-1 Preferred Interest	58			(58		)				—
Distributions to Partners (Common Partnership Interests)				(362		)				(362		)
Distributions for Series T-1 Preferred Interest	(58		)							(58		)
Capital Contributions from Parent				8						8
December 31, 2009	$	790		$	1,485		$	(19	)	$	2,256
Net Income before Allocation to Series T-1 Preferred Interest and Partners				271						271
Other Comprehensive Income							8			8
Net Income Allocation to Series T-1 Preferred Interest	58			(58		)				—
Distributions to Partners (Common Partnership Interests)				(321		)				(321		)
Distributions for Series T-1 Preferred Interest	(58		)							(58		)
Capital Contributions from Parent				8						8
December 31, 2010	$	790		$	1,385		$	(11	)	$	2,164
Net Income before Allocation to Series T-1 Preferred Interest and Partners				251						251
Other Comprehensive Income							(24		)	(24		)
Net Income Allocation to Series T-1 Preferred Interest	58			(58		)				—
Distributions to Partners (Common Partnership Interests)				(288		)				(288		)
Distributions for Series T-1 Preferred Interest	(58		)							(58		)
Capital Contributions from Parent				8						8
December 31, 2011	$	790		$	1,298		$	(35	)	$	2,053

See accompanying Notes to Consolidated Financial Statements

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CONSOLIDATED STATEMENTS OF CASH FLOWS

	Year Ended December 31,
(In Millions)	2011			2010			2009
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income before Allocation to Preferred Partnership Interest and Partners	$	251		271			$	294
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Depreciation, Depletion and Amortization (Includes $10 Lumber Impairment Loss in 2009)	96			96			109
Basis of Real Estate Sold	77			132			155
Equity Earnings from Timberland Venture	(56		)	(57		)	(55		)
Distributions from Timberland Venture	56			57			53
Deferred Income Taxes	—			1			(14		)
Gain on Sale of Properties and Other Assets	—			(13		)	—
Loss on Extinguishment of Debt	—			13			2
Deferred Revenue from Long-Term Gas Leases (Net of Amortization)	11			3			(6		)
Timber Deed Acquired	(5		)	—			—
Pension Plan Contributions	(3		)	(4		)	(10		)
Working Capital Changes Impacting Cash Flow:
Like-Kind Exchange Funds	—			—			48
Income Tax Recievable	(1		)	13			8
Other Working Capital Changes	(7		)	(17		)	5
Other	13			12			9
Net Cash Provided By Operating Activities	432			507			598
CASH FLOWS FROM INVESTING ACTIVITIES
Capital Expenditures (Excluding Timberland Acquisitions)	(70		)	(71		)	(61		)
Timberlands and Minerals Acquired	(101		)	—			(1		)
Proceeds from Sale of Properties and Other Assets	—			13			1
Purchases of Marketable Securities	—			(2		)	(3		)
Other	—			2			—
Net Cash Used In Investing Activities	(171		)	(58		)	(64		)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash Distributions to Common Partners	(288		)	(321		)	(362		)
Cash Distributions for Series T-1 Preferred Interest	(58		)	(58		)	(58		)
Borrowings on Line of Credit	1,921			1,783			1,073
Repayments on Line of Credit	(1,739		)	(1,937		)	(984		)
Proceeds from Issuance of Long-Term Debt	—			575			—
Debt Issuance Costs	—			(7		)	—
Principal Payments and Retirement of Long-Term Debt	(95		)	(531		)	(273		)
Net Cash Used In Financing Activities	(259		)	(496		)	(604		)
Increase (Decrease) In Cash and Cash Equivalents	2			(47		)	(70		)
Cash and Cash Equivalents:
Beginning of Period	252			299			369
End of Period	$	254		$	252		$	299
SUPPLEMENTAL CASH FLOW INFORMATION
Cash Paid (Received) During the Year for:
Interest - Net	$	76		$	80		$	93
Income Taxes - Net	$	—		$	(15	)	$	(18	)

See accompanying Notes to Consolidated Financial Statements

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1. ACCOUNTING POLICIES

General. Plum Creek Timberlands, L.P. is a Delaware Limited Partnership and a wholly-owned subsidiary of Plum Creek Timber Company, Inc. (“Parent”), a Delaware Corporation and a real estate investment trust, or “REIT”. References herein to “the Operating Partnership,” “we,” “us,” or “our” relate to Plum Creek Timberlands, L.P. and all of its wholly-owned consolidated subsidiaries; references to “Plum Creek” or “Parent” relate to Plum Creek Timber Company, Inc. and all of its wholly-owned consolidated subsidiaries.

At December 31, 2011, the Operating Partnership owned and managed approximately 6.6 million acres of timberlands in the Northwest, Southern and Northeast United States, and owned 8 wood product conversion facilities in the Northwest United States (2 of which have been curtailed). Included in the 6.6 million acres are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. In addition, the Operating Partnership has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller acreage transactions over the near and medium term. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Basis of Presentation. The consolidated financial statements of the Operating Partnership include the accounts of Plum Creek Timberlands, L.P. and its subsidiaries. The Operating Partnership is 100% owned by Plum Creek. Plum Creek has no assets or liabilities other than its direct and indirect ownership interests in Plum Creek Timberlands, L.P. and its interest in Plum Creek Ventures I, LLC (“PC Ventures”), a 100% owned subsidiary of Plum Creek. The Parent has no operations other than its investment in these subsidiaries and transactions in its own equity, such as the issuance and/or repurchase of common stock and the receipt of proceeds from stock option exercises. Intercompany transactions and accounts between Plum Creek Timberlands, L.P. and its subsidiaries have been eliminated in consolidation. All transactions are denominated in United States dollars.

Use of Estimates. The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Customer Concentrations. The following table sets forth the annual revenues from the Operating Partnership’s largest customer as a percentage of total annual revenues for the years ended December 31:

	2011		2010		2009
Customer Revenue as a Percentage of Total Revenues	7	%	7	%	7	%

If adverse market conditions for wood products were to continue or worsen, the loss of this customer could have a significant effect on the Operating Partnership’s results of operations.

Product Concentrations. Sales of the Operating Partnership’s timber and wood products are dependent upon the economic conditions of the housing, repair and remodeling, industrial, and pulp and paper industries. Sales of the Operating Partnership’s timberlands are dependent upon the general economic conditions in the United States, interest rates and the availability of buyer financing from financial institutions, not-for-profit organizations and government sources. As a result of these product concentrations, continued or worsening conditions in these markets could have a significant impact on the Operating Partnership’s results of operations.

Revenue Recognition. Timber sales revenues are recognized when legal ownership and the risk of loss transfers to the purchaser and the quantity sold is determinable. The Operating Partnership sells timber under delivered log agreements as well as through sales of standing timber (or “stumpage”). For delivered sales, revenue, which includes amounts billed for shipping and handling (logging and hauling of timber), is recognized when the log is delivered to the customer. Stumpage is sold using pay-as-cut or timber deed sale agreements. Under a pay-as-cut sales contract,

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the purchaser acquires the right to harvest specified timber on a tract, at an agreed upon price per unit. The sale and any related advances are recognized as revenue as the purchaser harvests the timber on the tract. Under a timber deed sale, the buyer agrees to purchase and harvest specified timber on a tract of land over the term of the contract (usually less than 18 months). Unlike a pay-as-cut sales contract, risk of loss and title to the trees transfer to the buyer when the contract is signed. The buyer also pays the full purchase price when the contract is signed. Revenue from a timber deed sale is recognized when the contract is signed.

Revenues generated from the sale of lumber, plywood, medium density fiberboard (“MDF”) and related by-products (primarily wood chips), and amounts billed for shipping and handling, are recognized at the time of delivery.

Revenue from the sale of real estate is recognized when the sale has been consummated, the buyer’s initial and ongoing payments are adequate, the risks and rewards of owning the property have transferred to the buyer, and we have no continuing involvement with the property. For substantially all of our real estate sales, we receive the entire consideration in cash at closing (“Cash Sales”). Also at closing, the risks and rewards of ownership transfer to the buyer and we do not have a continuing involvement in our properties after they are sold. We recognize revenue under the full accrual method for Cash Sales of real estate when the sale is consummated (i.e., at closing). On occasion, we receive a portion of the real estate sale consideration in the form of a note receivable. These sales ("Credit Sales") as a percentage of total real estate sales were as follows for the years ended December 31:

	2011		2010		2009
Credit Sales as a Percentage of Total Real Estate Sales	0	%	3	%	3	%

Under these circumstances, we use the full accrual method of recognizing revenue if the buyer’s initial and continuing investment is adequate; otherwise, revenue is generally recognized under the cost recovery method or deposit method, depending on the circumstances. Revenue from real estate development projects is generally recognized under the full accrual method of accounting because sales generally do not commence until the project is completed. Broker commissions and closing costs of our Real Estate Segment are included in Cost of Goods Sold.

We occasionally sell timberlands to a single buyer under a multi-period contract covering a series of prescheduled closings and/or options. Under these multi-period contracts, once title and risk of loss have transferred to the buyer for individual properties, the properties sold cannot be returned for a refund. However, deposits for future closings under multi-period contracts may be refunded under certain circumstances. The Operating Partnership treats each closing under a multi-period arrangement as a separate sale. Revenue in connection with a multi-period contract is generally recognized at closing equal to the lesser of the non-refundable consideration received or an allocation of total consideration based on fair value.

Furthermore, we may occasionally pursue a non-cash exchange of timberlands. Revenue is recognized in connection with non-cash exchanges of timberlands when the exchanges are considered to have commercial substance. We will recognize revenue to the extent of the fair value of the timberlands received. Revenues from non-cash exchanges of timberlands were $25 million in 2009.

Revenue generated from real estate sales includes the sale of higher value timberlands, non-strategic timberlands and large blocks of timberlands. In some of these transactions, the Operating Partnership sells timberlands that qualify for like-kind (tax-deferred) exchange treatment under the Internal Revenue Code. Substantially all of these sales involve a third party intermediary, whereby the third party intermediary receives proceeds related to the property sold and then reinvests the proceeds in like-kind property. The proceeds are recorded as revenue when the third party intermediary receives them. See “Like-Kind Exchanges”.

Cash and Cash Equivalents. All highly liquid investments purchased with an original maturity of three months or less are considered to be cash equivalents. Substantially all of the cash and cash equivalents are invested in money market funds.

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Accounts Receivable. Accounts receivable is presented net of an allowance for doubtful accounts of $0.4 million at December 31, 2011 and $0.4 million at December 31, 2010. Accounts are deemed past due based on payment terms. The allowance for doubtful accounts represents management’s estimate and is based on historical losses, recent collection history, credit ratings of individual customers and existing economic conditions. Delinquent accounts are charged against the allowance for doubtful accounts to the extent and at the time they are deemed uncollectible.

Like-Kind Exchanges. The Operating Partnership may enter into like-kind (tax-deferred) exchange transactions to acquire and sell assets, principally timberlands. These transactions may include both forward (timberlands sold, followed by reinvestment of proceeds to acquire timberlands) and reverse (timberlands purchased, followed by receipt of proceeds from timberland sales) like-kind exchanges. The Operating Partnership uses a qualified escrow account to facilitate like-kind exchange transactions. Funds from forward like-kind exchange transactions are restricted from being used until the funds are either successfully reinvested in timber and timberlands or the exchange fails and the proceeds are distributed to the Operating Partnership.

Inventories. Logs, work-in-process and finished goods are stated at the lower of cost or market using the average cost method. A separate lower of cost or market analysis is prepared for each product line (i.e. lumber, plywood and MDF). Net realizable value is determined based on actual selling prices at the end of the accounting period. Losses on firm purchase commitments for logs are recorded when the related manufactured finished products are expected to be sold at a loss based on current product prices. Supplies inventories are stated at cost. Costs for manufactured inventories include raw materials, labor, supplies, energy, depreciation and production overhead. Cost of log inventories include timber depletion, stumpage, associated logging and harvesting costs, road costs and production overhead.

Timber and Timberlands. Timber (including timber deeds and logging roads) and timberlands (including mineral reserves) are stated at cost less accumulated depletion for timber previously harvested and accumulated road amortization. The Operating Partnership capitalizes timber and timberland purchases along with reforestation costs and other costs associated with the planting and growing of timber, such as site preparation, growing or purchases of seedlings, planting, fertilization, herbicide application and the thinning of tree stands to improve growth. The Operating Partnership presents timber and timberland purchases and the capitalized costs described above under Investing Activities on the Consolidated Statements of Cash Flows. A timber deed, also called timber cutting rights, allows the Operating Partnership to harvest timber on timberlands it does not own over a specific time period (currently less than 10 years) The Operating Partnership capitalizes timber deed acquisitions. The Operating Partnership presents timber deed acquisitions under Operating Activities on the Consolidated Statements of Cash Flows. Timber carrying costs, such as real estate taxes, insect control, wildlife control, leases of timberlands (other than lease payments for the purchase of standing timber, in which case the payments are capitalized) and forest management personnel salaries and fringe benefits, are expensed as incurred. Costs of major roads are capitalized and amortized over 30 years. Costs for roads that are built to access multiple logging sites over numerous years are capitalized and amortized over 6 years. Costs for roads built to access a single logging site are expensed as incurred.

Costs attributable to timber harvested, or depletion, are charged against income as trees are harvested. Depletion rates are determined annually based on the relationship between net carrying value of the timber plus certain capitalizable silviculture costs expected to be incurred over the harvest cycle and total timber volume estimated to be available over the harvest cycle. The depletion rate does not include an estimate for either future reforestation costs associated with a stand’s final harvest or future volume in connection with the replanting of a stand subsequent to its final harvest. Net carrying value of the timber and timberlands is used to compute the gain or loss in connection with timberland sales.

Higher and Better Use Timberlands / Real Estate Development. We estimate that included in the Operating Partnership’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber. Some of our real estate activities, including our real estate

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development business, are conducted through our wholly-owned taxable REIT subsidiaries.

Costs associated with a specific real estate project are capitalized when management estimates that it is probable that a project will be successful. Both external and internal expenditures directly associated with the specific real estate project are capitalized. The Operating Partnership will capitalize improvements and other development costs, including interest costs and property taxes, during the development period. General real estate development costs not related to a specific project and costs incurred before management has concluded that it is probable that a project will be successful (e.g. investigatory costs) are expensed as incurred. For real estate projects with multiple parcels, the Operating Partnership determines the cost of the individual lots sold by allocating the historical cost of the land, timber, development and common construction costs on a relative sales value.

Properties developed by the Operating Partnership will generally be low-intensity development limited to activities associated with obtaining entitlements. Capitalized real estate development costs, including the book basis in the related timber and timberlands associated with these developments, were $13 million at December 31, 2011. Substantially all of these properties are expected to be sold beyond one year and are included in Other Assets (non-current). Total capitalized real estate development costs at December 31, 2010 were $14 million.

Larger and more complicated projects needing more invested capital may be developed through third party ventures. These projects have a longer timeframe and are not expected to be sold in the near term. The capitalized development costs for these projects and the book basis of the related timber and timberlands are included in Timber and Timberlands as they are still managed for timber operations. At December 31, 2011, approximately $18 million of costs have been capitalized for a single project that has been approved by a state commission but is being appealed in court by groups opposed to the project. While not expected, if the approval is reversed, some or all of these capitalized costs could be written off in the next twelve months.

The book basis of timberlands that are considered held for sale are presented in the Consolidated Balance Sheet as Assets Held for Sale. The total book basis for assets held for sale was $103 million at December 31, 2011 and $57 million at December 31, 2010. Generally, timberlands that are under contract to sell or are listed for sale through an independent broker or by a taxable REIT subsidiary and are expected to be sold within the next year are considered assets held for sale. The book basis of timberlands that do not meet the held for sale criteria is included in Timber and Timberlands.

Accounting for Equity Method Investments. In 2008, a subsidiary of the Operating Partnership, Plum Creek Timber Operations I, LLC (“PC Member”), contributed 454,000 acres of timberlands located in its Southern Resources Segment to a timberland venture in exchange for a $705 million preferred interest and a $78 million common interest. The Operating Partnership accounts for its interest in the Timberland Venture under the equity method of accounting. See Note 13 of the Notes to Consolidated Financial Statements.

Property, Plant and Equipment. Property, plant and equipment are recorded at cost. Replacements of major units of property are capitalized, and the replaced units are retired. Replacement of minor components of property and repair and maintenance costs are charged to expense as incurred.

The Operating Partnership evaluates its long-lived assets for potential impairment whenever circumstances indicate the book basis of an asset group may not be recoverable. The Operating Partnership considers each of its manufacturing facilities to be a separate asset group based on identifiable cash flows.

All property, plant and equipment other than manufacturing machinery (for lumber, plywood and MDF) are depreciated using the straight-line method over the estimated useful lives of the related assets. Manufacturing machinery and equipment are depreciated on either a straight-line basis or a units-of-production basis, which approximates a straight-line basis. Useful lives are 19 years for land improvements, 20 to 45 years for buildings, and 3 to 20 years for machinery and equipment. Leasehold improvements are depreciated over the lease term or estimated useful life, whichever is shorter. The cost and related accumulated depreciation of property sold or retired are removed from the accounts and any gain or loss is recorded.

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Depreciation expense, excluding impairment charges, was as follows for the years ended December 31 (in millions):

	2011		2010		2009
Depreciation Expense	$	20	$	19	$	20

Grantor Trusts. The Operating Partnership has a grantor trust that was established for deferred compensation and deferred Plum Creek shares. See Note 7 of the Notes to Consolidated Financial Statements. Deferred compensation assets, which include money market and mutual fund investments, are classified as “trading securities” and are carried at market value. Realized gains and losses and changes in unrealized gains and losses and a corresponding amount of compensation expense are recorded in the Consolidated Statements of Income.

The Operating Partnership maintains another grantor trust, which the Operating Partnership uses to fund its non-qualified pension plan obligation. See Notes 7 and 9 of the Notes to Consolidated Financial Statements. Money market and mutual fund investments held by this trust are classified as “available for sale securities.” The investments are carried at market values on the Operating Partnership’s Consolidated Balance Sheets. Realized gains and losses are recognized in the Consolidated Statements of Income; changes in unrealized gains and losses are recorded as other comprehensive income or loss, unless an other than temporary impairment has occurred, in which case an impairment loss is recognized in the Consolidated Statements of Income.

Shipping and Handling Costs. Costs incurred for the transportation of timber and manufactured products are included in Cost of Goods Sold.

Accounting for Share-Based Compensation. All share-based payments to employees are recognized in the income statement based on their fair values. The Black-Scholes-Merton option pricing model is used to value Plum Creek stock options and the grant date fair values, the closing market price for Plum Creek’s common stock, are used to value other Plum Creek common stock awards of restricted stock and restricted stock units. Share-based awards that are classified and accounted for as liabilities also may be granted to any officer, director, employee, consultant, or advisor of the Operating Partnership. These awards are valued using a Monte Carlo simulation.

Other Operating Income. Periodically the Operating Partnership will recognize gains and losses from miscellaneous asset sales, litigation settlements and other items which are reported in our Consolidated Statements of Income as Other Operating Income (Expense), net. See Note 16 of the Notes to Consolidated Financial Statements.

Reclassifications. Certain prior year amounts have been reclassified to conform to the 2011 presentation. The reclassifications had no impact on operating income or net income.

New Accounting Pronouncements

Presentation of Comprehensive Income. In 2011, the FASB issued a new accounting standard requiring entities to present net income and other comprehensive income in either a single continuous statement or in two separate, but consecutive, statements of net income and comprehensive income. The new requirements do not change which components of comprehensive income are recognized in net income or in other comprehensive income, or when an item of other comprehensive income is recognized or must be reclassified to net income. During 2011, the FASB also deferred a requirement that entities present separately reclassification adjustments on the face of the income statement.

While the new requirements are effective for public entities in fiscal years (including interim periods) beginning after December 15, 2011, as permitted by the standard, the Operating Partnership has elected adoption at December 31, 2011. As a result, the financial statements include separate Consolidated Statements of Comprehensive Income with retrospective application to previously presented periods.

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NOTE 2. INVENTORIES

Inventories, accounted for using the lower of average cost or market, consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Raw Materials (primarily logs)	$	10	$	12
Work-In-Process	1		1
Finished Goods	24		24
	35		37
Supplies	13		12
Total	$	48	$	49

NOTE 3. TIMBER AND TIMBERLANDS

Timber and Timberlands consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Timber and Logging Roads, net	$	2,232	$	2,261
Timber Deed	5		—
Timberlands	1,140		1,144
Timber and Timberlands, net	$	3,377	$	3,405

During 2011, the Operating Partnership acquired approximately 59,000 acres of timberlands primarily located in Alabama and Georgia and mineral reserves in Oregon for a total of $101 million. These purchases were financed primarily from our line of credit and have been accounted for as asset acquisitions. Timberland dispositions during 2011 were approximately 185,000 acres, of which 45,000 acres were located in the Northern Resources Segment and 140,000 acres were located in the Southern Resources Segment.

Timberland dispositions during 2010 were approximately 258,000 acres, of which 142,000 acres were located in the Northern Resources Segment and 116,000 acres were located in the Southern Resources Segment. Included in the 142,000 acres of Northern Resources timberland dispositions are approximately 70,000 acres sold in Montana for proceeds of $89 million and operating income of $37 million from the third phase of a multi-period contract. In connection with this transaction, we also entered into a fiber supply agreement for these timberlands (for up to 15 years) at market-based prices to supply our manufacturing facilities.

In January 2012, the Operating Partnership purchased a timber deed in the Southern Resources Segment for $103 million, $5 million of which was paid as a deposit in December 2011. The timber deed encompasses approximately 4.7 million tons of standing timber and will be harvested over the eight-year term of the deed. The timber deed purchase price has been and will be reflected in our Consolidated Statements of Cash Flows as an outflow under Cash Provided by Operating Activities.

The Operating Partnership’s Real Estate Segment revenue consists of sales of higher and better use timberlands and sales of non-strategic timberland. Occasionally, timberlands are sold at a loss. Each potential real estate sale is evaluated for a possible impairment in accordance with the accounting for long-lived assets classified as held for sale. At December 31, 2011, the book basis of real estate held for sale was $103 million and was $57 million as of December 31, 2010. Impairment losses are included in Cost of Goods Sold for Real Estate in our Consolidated

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Statements of Income. Impairment losses recorded for the potential sale of timberlands and the associated book basis after the impairment recognition were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Impairment Losses	$	1	$	1	$	3
Book Basis of Property	$	7	$	2	$	33

The fair value of the impaired assets was primarily determined based on external appraisals which were derived from a combination of comparable sales and discounted future cash flows.

NOTE 4. PROPERTY, PLANT AND EQUIPMENT

Property, Plant and Equipment consisted of the following (in millions):

	December 31, 2011			December 31, 2010
Land, Buildings and Improvements	$	86		$	84
Machinery and Equipment	315			309
	401			393
Accumulated Depreciation	(263		)	(247		)
Property, Plant and Equipment, net	$	138		$	146

NOTE 5. INCOME TAXES

Plum Creek Timberlands, L.P. is a wholly-owned limited partnership and therefore, not subject to income tax. Plum Creek Timberlands, L.P.’s taxable income is allocated 100% (directly and indirectly) to its parent, Plum Creek Timber Company, Inc., which has elected to be taxed as a REIT under sections 856-860 of the United States Internal Revenue Code. A REIT generally does not pay corporate-level income tax if it distributes 100% of its taxable income to shareholders and satisfies other organizational and operational requirements as set forth in the Internal Revenue Code. If a company fails to qualify as a REIT in any taxable year, it will be subject to federal income taxes at regular corporate rates (including any applicable alternative minimum tax) and may not be able to qualify as a REIT for four subsequent taxable years. The book basis of Plum Creek’s assets and liabilities exceeds its tax basis by approximately $1.8 billion at December 31, 2011.

The Operating Partnership conducts certain non-REIT activities through various wholly-owned taxable REIT subsidiaries, which are subject to corporate-level income tax. These activities include our manufacturing operations, the harvesting and sale of logs, and the development and/or sale of some higher value timberlands. The Operating Partnership’s tax provision includes the tax expense and/or benefit associated with Plum Creek’s wholly-owned taxable REIT subsidiaries, as well as any tax expense and/or benefit incurred by the REIT. The effective tax rate for the Operating Partnership is lower than the federal corporate statutory rate primarily due to Plum Creek’s status as a REIT.

Prior to 2011, Plum Creek was generally subject to corporate-level tax (built-in gains tax) when the Operating Partnership made a taxable disposition of certain properties acquired in a 2001 merger. The built-in gains tax applied to gains recognized from such asset sales to the extent that the fair value of the property exceeded its tax basis at the merger date. Built-in gains tax was generally not payable on dispositions of property to the extent the proceeds from such dispositions were reinvested in qualifying like-kind replacement property. Prior to 2011, the Operating Partnership maintained a deferred income tax liability related to the book-tax basis difference of timber and timberlands that were

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expected to be sold, and subject to, the built-in gains tax.

In connection with the enactment of the American Recovery and Reinvestment Act of 2009, deferred taxes associated with timber and timberlands related to the built-in gains tax were reduced by $3 million, resulting in the recognition of a $3 million deferred income tax benefit in 2009. Furthermore, as a result of the enactment of the American Recovery and Reinvestment Act of 2009, the Operating Partnership reversed $5 million of current tax expense related to built-in gains tax that had been accrued in 2008. Following the enactment of the Small Business Jobs Act of 2010, the Operating Partnership concluded that it no longer needed a deferred tax liability in connection with expected sales of timberlands that are subject to the built-in gains tax. As a result, the Operating Partnership reduced its deferred tax liability by $1 million in 2010.

The Operating Partnership recognizes interest and penalties, if incurred, related to income taxes in the Provision for Income Taxes in the Consolidated Statements of Income. During the years ended December 31, 2011, 2010 and 2009, amounts for interest and penalties included in the tax provision were insignificant. At December 31, 2011, and December 31, 2010, the Operating Partnership had no accrued interest or penalties related to income taxes.

The provision (benefit) for income taxes consists of the following for the years ended December 31 (in millions):

	2011			2010			2009
Current Income Taxes(A):
Federal	$	—		$	—		$	(14	)
State	(2		)	—			(2		)
Deferred Income Taxes:
Federal	—			3			—
State	—			—			—
Utilization of (Benefit from) Operating Loss Carryforward	(2		)	(1		)	(12		)
Change to Valuation Allowance	3			—			—
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

^(A)  Included in the current tax provision for 2009 is a $12 million tax benefit associated with the carryback of net operating losses to 2004 and 2005 as a result of the Worker, Homeownership and Business Assistance Act of 2009.

The federal statutory income tax rate was 35%. The income generated by the activities of the REIT is generally not subject to federal and state income tax. The permanent book-tax differences consist primarily of differences in cost basis for certain contributed properties that were sold, in which the tax basis exceeded the book basis.

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The provision (benefit) for income taxes is reconciled as follows to the federal statutory rate for the years ended December 31 (in millions):

	2011			2010			2009
Provision for Income Taxes on Income from Continuing Operations Computed at the Federal Statutory Tax Rate of 35%	$	67		$	71		$	72
REIT Income not Subject to Federal Tax	(68		)	(64		)	(86		)
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Change to Valuation Allowance	3			—			—
State Income Tax Expense (Benefit), net of Federal Benefit	(1		)	—			(2		)
Reversal of Accrued Built-In Gains	—			—			(5		)
Tax Audit Settlements	1			—			—
Permanent Book-Tax Differences	(3		)	(5		)	(7		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

Total income tax provision (benefit) was allocated as follows for the years ended December 31 (in millions):

	2011				2010			2009
Income from Continuing Operations	$	(1	)	—	$	1	—	$	(31	)
Other Comprehensive Income	(6		)	—	2		—	3
Gain on Sale of Properties	—			—	—		—	—
Additional Paid-In Capital (Share-Based Compensation)	—			—	—		—	—
Total Income Tax Provision (Benefit)	$	(7	)	—	$	3	—	$	(28	)

Deferred income taxes are provided for the temporary differences between the financial reporting basis and tax basis for the assets and liabilities of our various wholly-owned taxable REIT subsidiaries. The components of deferred income tax assets and liabilities are as follows at December 31 (in millions): 

	2011			2010
Deferred Income Tax Assets:
Federal and State Net Operating Loss Carryforwards	$	15		$	14
Accrued Compensation	7			7
Accrued Pension Benefits	17			6
Timber and Timberlands	9			9
Accrued Workers' Compensation Benefits	4			4
Inventory Reserves and Write-downs	—			2
Other Accruals and Reserves	3			6
Valuation Allowance	(3		)	—
	52			48
Deferred Income Tax Liabilities:
Machinery and Equipment	(29		)	(31		)
	(29		)	(31		)
Deferred Income Tax Asset, net	$	23		$	17

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The Operating Partnership has federal and state net operating loss carryforwards of $15 million at December 31, 2011 which will begin to expire in 2028. In 2011, the Operating Partnership recorded a valuation allowance of $3 million to reflect the estimated amount of deferred tax assets that may not be realized. The valuation allowance is related to certain state net operating loss carryforwards and other associated deferred tax assets that we do not believe it is more likely than not they will be realized in future periods.

The determination of the realization of deferred tax assets is based upon management's judgment of various future events and uncertainties, including the timing, nature and amount of future taxable income earned by certain wholly-owned subsidiaries. A valuation allowance is recognized if management believes it is more likely than not that some portion, or all, of the deferred tax asset will not be realized. The company has recorded gross deferred tax assets of $62 million (net of a $3 million valuation allowance) and $54 million as of December 31, 2011 and December 31, 2010, respectively. Management believes that due to the reversal of various taxable temporary differences and/or the planned execution of prudent and feasible tax planning strategies, sufficient taxable income can be generated to utilize the company's remaining deferred tax assets for which a valuation allowance was determined to be unnecessary.

The net deferred income tax asset is classified on our Consolidated Balance Sheets as follows at December 31 (in millions): 

	2011		2010
Current Deferred Income Tax Asset	$	6	$	7
Non Current Deferred Income Tax Asset	17		10
Deferred Income Tax Asset, net	$	23	$	17

As of December 31, 2011 and December 31, 2010, Plum Creek did not have any liabilities for unrecognized tax benefits. We believe the statute of limitations has expired for all tax years prior to 2006. Plum Creek continues to monitor the progress of ongoing income tax controversies. We do not currently believe there is a reasonable possibility of recording a liability for unrecognized tax benefits within the next twelve months.

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NOTE 6. BORROWINGS

Outstanding borrowings of the Operating Partnership, all of which are unsecured, consist of the following (in millions): 

	December 31, 2011		December 31, 2010
Line of Credit maturing 2015, 1.71% at 12/31/11, based on LIBOR plus 1.50%	$	348	$	166
Term Credit Agreement due 2012, 0.65% at 12/31/11, based on LIBOR plus 0.375%.	350		350
Senior Notes due 2011, 7.83%	—		49
Senior Notes due 2013, 6.18%	174		174
Senior Notes due 2013, 7.76% less unamortized discount of $0.3 at 12/31/11, effective rate of 8.05%	72		111
Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10%	454		454
Senior Notes due 2016, mature serially 2012 to 2016, 8.05%	17		24
Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71%	575		575
Total Long-Term Debt	1,990		1,903
Less: Current Portion of Long-Term Debt	352		94
Less: Line of Credit	348		166
Long-Term Portion	$	1,290	$	1,643

Line of Credit. The company has a $600 million revolving line of credit agreement that matures January 30, 2015. The weighted-average interest rate for the borrowings on the line of credit was 1.71% and 1.95% as of December 31, 2011 and December 31, 2010, respectively. The interest rate on the line of credit is based on LIBOR plus 1.50%. This rate can range from LIBOR plus 1.275% to LIBOR plus 2% depending on our debt ratings. In addition to interest, the line has an annual facility fee of 0.25% that can vary depending on debt rating. Subject to customary covenants, the line of credit allows for borrowings from time to time up to $600 million, including up to $100 million of standby letters of credit. Borrowings on the line of credit fluctuate daily based on cash needs. As of December 31, 2011, we had $348 million of borrowings and $2 million of standby letters of credit outstanding; $250 million remained available for borrowing under our line of credit. As of January 3, 2012, $251 million of the borrowings under our line of credit was repaid. The line of credit has been classified as a current liability in our Consolidated Balance Sheet as of December 31, 2011, because the Operating Partnership used its cash as of December 31, 2011 to repay a portion of the line.

Term Credit Agreement. The Operating Partnership has a $350 million term credit agreement that matures July 10, 2012. As of December 31, 2011, the interest rate for the term credit agreement was 0.65%. The interest rate is based on LIBOR plus 0.375%. This rate can range from LIBOR plus 0.3% to LIBOR plus 1.15% depending on our debt ratings. The term credit agreement is subject to covenants that are substantially the same as those of the revolving line of credit. The agreement allows for prepayment of the borrowings at any time prior to the maturity date without premium or penalty.

Senior Notes. The Operating Partnership has outstanding Senior Notes with various maturities and fixed interest rates. As of December 31, 2011, the Operating Partnership has $263 million aggregate principal amount of Senior Notes outstanding that are privately placed borrowings with various lenders (“Private Debt”). The Private Debt matures serially through 2016.

As of December 31, 2011, the Operating Partnership has publicly issued approximately $1.0 billion aggregate principal amount of Senior Notes (“Public Debt”). The company has $575 million aggregate principal amount of 4.70% Public Debt which matures in 2021. The remaining 5.875% Public Debt with an aggregate principal amount of $458 million million matures in 2015. The Public Debt is fully and unconditionally guaranteed by Plum Creek Timber Company, Inc.

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The Senior Notes are redeemable prior to maturity; however, they are subject to a premium on redemption, which is based upon interest rates of U.S. Treasury securities having similar average maturities. The premium that would have been due upon early retirement approximated $237 million at December 31, 2011 and $164 million at December 31, 2010.

The Public Debt is structurally subordinated to all debt and liabilities of the Operating Partnership’s subsidiaries to the extent of the value of the assets at the subsidiaries. At December 31, 2011, the total amount of debt and liabilities of the Operating Partnership’s subsidiaries was $263 million, all of which was unsecured. In the event of insolvency, bankruptcy, liquidation, reorganization, dissolution, winding up of the Operating Partnership’s business or other similar process, the assets of the Operating Partnership’s subsidiaries will be available to pay the amounts due on the Public Debt only after the indebtedness of the Operating Partnership’s subsidiaries has been repaid in full.

Senior Notes outstanding, including unamortized discount, consisted of the following (in millions): 

	December 31, 2011		December 31, 2010
Senior Notes
Public Debt	$	1,029	$	1,029
Private Debt	263		358
Total Senior Notes	$	1,292	$	1,387

Plum Creek Timber Company, Inc. and the Operating Partnership have filed a shelf registration statement with the Securities and Exchange Commission which expires in December 2014. Under the shelf registration statement, Plum Creek Timber Company, Inc., from time to time, may offer and sell any combination of preferred stock, common stock, depositary shares, warrants and guarantees, and the Operating Partnership may from time to time, offer and sell debt securities. Plum Creek and the Operating Partnership intend to maintain a shelf registration statement with respect to such securities.

Debt Principal Payments. The table below summarizes the debt principal payments made for the years ended December 31 (in millions): 

	2011		2010
Public Debt	$	—	$	—
Private Debt	95		269
Term Credit Agreement	—		250
Total	$	95	$	519

During 2010, the Operating Partnership prepaid approximately $213 million of principal of Private Debt. This prepayment resulted in a $13 million loss. The $13 million loss for the year ended December 31, 2010, is classified as Loss on Extinguishment of Debt in the Consolidated Statements of Income.

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Debt Maturities. The aggregate maturities on all debt agreements are as follows as of December 31, 2011 (in millions):

Maturity	Debt Agreements
2012	$	353
2013	250
2014	3
2015	810
2016	3
Thereafter	575
Total	$	1,994

Debt Covenants. Certain of the Operating Partnership’s debt agreements contain various restrictive covenants, including limitations on harvest levels, sales of assets, the incurrence of indebtedness and making restricted payments on behalf of Plum Creek (such as payments of cash dividends or stock repurchases). The borrowing agreements for the Private Debt limit our ability to make restricted payments based on a computation of “available cash,” which is generally our net income (excluding gains on the sale of capital assets) after adjusting for non-cash charges (such as depreciation and depletion), changes in various reserves, less capital expenditures and principal payments on indebtedness that are not financed. Additionally, the amount of available cash may be increased by the amount of proceeds from the sale of higher and better use properties and, under certain circumstances, by 50% of the amount of net proceeds from the sale of other assets. Furthermore, our line of credit and term credit agreement require that we maintain certain interest coverage and maximum leverage ratios. The Operating Partnership was in compliance with all of our borrowing agreements covenants as of December 31, 2011.

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NOTE 7. FAIR VALUE MEASUREMENTS

Assets and Liabilities Measured at Fair Value on a Recurring Basis. The Operating Partnership’s fair value measurements of its financial instruments, measured on a recurring basis, are categorized as Level 1 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 1 valuation is based on quoted prices in active markets at the measurement date for identical unrestricted assets or liabilities. Summarized below are the Level 1 assets reported in the Operating Partnership’s financial statements at fair value, measured on a recurring basis (in millions):

	Balance at December 31, 2011		Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	253	$	253
Available-for-Sale Securities (B)	31		31
Trading Securities (B)	5		5
Total	$	289	$	289
	Balance at December 31, 2010		Fair Value Measurements at Reporting Date Using Quoted Prices in Active   Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	249	$	249
Available-for-Sale Securities (B)	30		30
Trading Securities (B)	5		5
Total	$	284	$	284

^(A)  Consists of several money market funds and is included in the $254 million and $252 million of Cash and Cash Equivalents in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010, respectively.

^(B)  Consists of several mutual funds and is included in Investment in Grantor Trusts in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010. At December 31, 2011, investments in these mutual funds were approximately 45% in domestic (U.S.) equities, 25% in international equities and 30% in debt securities.

Available-for-Sale Securities. Certain investments in the grantor trusts relate to the Operating Partnership's non-qualified pension plans and are classified as available-for-sale securities. The Operating Partnership has invested in various money market, debt and equity mutual funds and plans to use these investments to fund its non-qualified pension obligations. Unrealized holding gains and losses are included as a component of accumulated other comprehensive income. The Operating Partnership records changes in unrealized holding gains and losses in Other Comprehensive Income, unless an other than temporary impairment has occurred, which is then charged to expense. Changes in the fair value of available-for-sale securities were not material to the Operating Partnership's financial position or results of operations. See Note 8 of the Notes to Consolidated Financial Statements.

Trading Securities. Certain investments in the grantor trusts relate to the Operating Partnership's deferred compensation plans and are classified as trading securities. Deferred compensation amounts are invested in various money market, debt and equity mutual funds. The Operating Partnership plans to use these investments to fund deferred compensation obligations. Realized gains and losses and changes in unrealized gains and losses (and a corresponding amount of compensation expense) are recognized in the Operating Partnership's Consolidated Statements of Income. Deferred compensation obligations are included in Other Liabilities and were $5 million at December 31, 2011 and $5 million at December 31, 2010. Changes in the fair value of trading securities were not

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material to the Operating Partnership's financial position or results of operations.

Other Instruments. The carrying amount of notes receivable approximates fair value due to the short-term maturities of these instruments. The estimated fair value of the Operating Partnership's debt was approximately $2.06 billion and $1.95 billion at December 31, 2011 and December 31, 2010, respectively, and the carrying amount was $1.99 billion and $1.90 billion at December 31, 2011 and December 31, 2010, respectively. The fair value of the Operating Partnership's Public Debt (publicly issued Senior Notes) is estimated using market quotes. The fair value of the Operating Partnership's Private Debt (Senior Notes with various maturities and fixed interest rates which are privately placed with various lenders) is estimated using the same rates adjusted for the different maturities. The fair value of our Term Credit Agreement was determined by adjusting the spread over LIBOR to a current market spread for comparable debt.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis. The Operating Partnership’s fair value measurements of its assets and liabilities, measured on a nonrecurring basis, are categorized as Level 3 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 3 valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

There were no fair value measurements of assets or liabilities measured on a nonrecurring basis during the year ended December 31, 2011.

Summarized below are the Level 3 assets and liabilities reported in the Operating Partnership’s financial statements at fair value, measured on a nonrecurring basis, during the year ended December 31, 2010 (in millions):

	2010		Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements)		Net Gain (Loss)
Timberlands Held for Sale (A)	$	2	$	2	$	(1	)
Total					$	(1	)

^(A)  During 2010, timberlands held for sale with a carrying value of $3 million were written down to their fair value (net of estimated selling costs) of $2 million, resulting in a loss of $1 million, which was included in earnings for the year ended December 31, 2010. These timberlands were sold in 2011. The fair value was based on an external appraisal which was derived from a combination of comparable sales and discounted future cash flows. The discounted future cash flows were based on estimated future timber prices and related operating expenses using internal and external projections.

NOTE 8. PARTNERS' CAPITAL

On October 1, 2008, PC Ventures I, LLC (“PC Ventures”), a 100% wholly-owned subsidiary of Plum Creek Timber Company, Inc., borrowed $783 million from an entity in which a subsidiary of the Operating Partnership has an equity interest. See Note 13 of the Notes to Consolidated Financial Statements. PC Ventures used the proceeds from the borrowing to make a $783 million capital contribution to the Operating Partnership in exchange for a Series T-1 Redeemable Preferred Limited Partnership Interest in the Operating Partnership (“Series T-1 Preferred Interest”). The Operating Partnership has no ownership interest in PC Ventures.

The Series T-1 Preferred Interest provides for a return of 7.375% per annum (approximately $58 million) on its contributed capital of $783 million. Distributions are payable on February 15th, May 15th, August 15th, and November 15th each year. The Series T-1 Preferred Interest is redeemable upon liquidation of the Operating Partnership. The Series T-1 Preferred Interest has a preference in liquidation over the Common Partnership Interests (Partners’ Capital) to the extent the Operating Partnership has available assets to distribute to the Series T-1 Preferred Interest.

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Under the terms of our note agreements and line of credit (see Note 6 of the Notes to Consolidated Financial Statements), the Operating Partnership is restricted from transferring assets and funds in the form of loans, advances or cash dividends to Plum Creek Timber Company, Inc. and PC Ventures. Subject to certain restrictions, the Operating Partnership can make loans or advances to Plum Creek Timber Company, Inc. and PC Ventures. Based on these provisions, the Operating Partnership could distribute or advance the cash on its balance sheet as of December 31, 2011, or $254 million, all of which is considered unrestricted assets. At December 31, 2011, the Operating Partnership and its consolidated subsidiaries had net assets of $1,263 million of which $1,009 million was restricted from being transferred by the Operating Partnership to Plum Creek Timber Company, Inc. and PC Ventures.

As of December 31, 2011 and December 31, 2010, the undistributed earnings included in partnership capital from an entity accounted for by the equity method were $17 million and $17 million, respectively.

Comprehensive Income

Comprehensive income includes net income, actuarial gains and losses associated with our defined benefit pension plans and unrealized gains and losses on available-for-sale securities. Comprehensive income was as follows for the years ended December 31 (in millions): 

	Pretax Amount			Tax Expense (Benefit)			After-Tax Amount
December 31, 2009
Net Income before Allocation to Series T-1 Preferred Interest and Partners							$	294
Unrealized Holding Gains	$	5		$	—		5
Defined Benefit Plans:
Actuarial Gain	3			1			2
Reclassification to Net Income	7			2			5
Total Comprehensive Income							$	306
December 31, 2010
Net Income before Allocation to Series T-1 Preferred Interest and Partners							$	271
Unrealized Holding Gains	$	2		$	—		2
Defined Benefit Plans:
Actuarial Gain	6			2			4
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	279
December 31, 2011
Net Income before Allocation to Series T-1 Preferred Interest and Partners							$	251
Unrealized Holding Losses	$	(1	)	$	—		(1		)
Defined Benefit Plans:
Actuarial Gain	(31		)	(6		)	(25		)
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	227

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The components of accumulated other comprehensive income, net of tax, were as follows at December 31 (in millions): 

	2011			2010
Net Unrealized Holding Gains	$	6		$	7
Defined Benefit Plans:
Net Loss	(41		)	(18		)
	$	(35	)	$	(11	)

NOTE 9. EMPLOYEE PENSION AND RETIREMENT PLANS

Pension Plan—General. Plum Creek Timberlands, L.P. sponsors defined benefit pension plans that cover substantially all employees of the Operating Partnership. Most of the Operating Partnership’s salaried and all hourly employees who complete one year of service in which they work at least 1,000 hours are eligible to participate in the plan. Participants vest after three years of service. The cash balance benefits for salaried employees is determined based primarily on certain percentages of compensation, age, years of service and interest accrued based on the 30-year Treasury bond rate. Participants who were employees of the Operating Partnership on September 1, 2000, earn benefits based on the greater of the cash balance formula or a monthly pension benefit that is principally based on the highest monthly average earnings during any consecutive sixty-month out of 120-month period and the number of years of service credit. The benefits to hourly employees are generally based on a fixed amount per year of service.

The Operating Partnership maintains a qualified defined benefit pension plan and two non-qualified defined benefit pension plans. Assets related to the non-qualified plans are held in a grantor trust and are subject to the claims of creditors in the event of bankruptcy. As a result, pension assets for the non-qualified plans are not considered plan assets, and therefore, have not been netted against our pension liability. Pension assets for the non-qualified plans are included in “Investment in Grantor Trusts” and the related pension liability is included in “Other Current Liabilities” and “Other Liabilities” in our Consolidated Balance Sheets.

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Funded Status. The following table provides a reconciliation of benefit obligations, plan assets, and funded status of the plans for the years ended December 31 (in millions):

	2011			2010
Change in Benefit Obligation
Benefit Obligation at Beginning of Period	$	135		$	130
Service Cost	6			6
Interest Cost	8			7
Actuarial Loss	21			1
Benefits Paid	(6		)	(9		)
Benefit Obligation at End of Period	$	164		$	135
Change in Plan Assets
Fair Value of Plan Assets at Beginning of Period	$	106		$	96
Actual Return on Plan Assets	(3		)	14
Employer Contributions	3			5
Benefits Paid	(6		)	(9		)
Fair Value of Plan Assets at End of Period	100			106
Funded Status—December 31	$	(64	)	$	(29	)
Amounts Recognized in the Consolidated Balance Sheet
Current Liabilities	$	4		$	3
Other Long-Term Liabilities	60			26
Total	$	64		$	29

Note: The Benefit Obligation reflects both the qualified and non-qualified (supplemental) plans while the Plan Assets reflects only the qualified plan. The actuarial loss reflected in the change in benefit obligation for 2011 is due primarily to a change in interest rate assumptions for measuring our pension liabilities as of December 31, 2011.

The following table sets forth the benefit obligation, accumulated benefit obligation, plan assets, and assets held in the grantor trust for the qualified and non-qualified pension plans as of December 31 (in millions):

	Qualified Pension Plan				Non-Qualified Pension Plans
	2011		2010		2011		2010
Projected Benefit Obligation	$	128	$	106	$	36	$	29
Accumulated Benefit Obligation	120		101		31		25
Plan Assets	100		106		N/A		N/A
Assets Held in the Grantor Trust	N/A		N/A		31		30

Pension contributions are significantly impacted by investment returns and changes in interest rates. It is generally the Operating Partnership’s policy to fund the qualified plan annually such that the fair value of plan assets equals or exceeds the actuarially computed accumulated benefit obligation (the approximate actuarially computed current pension obligation if the plan was discontinued) over a market cycle (generally 3 to 5 years). During 2011, the Operating Partnership contributed $3 million to the qualified pension plan and did not make any contributions to its grantor trust associated with the non-qualified plans. During 2010, the Operating Partnership contributed $4 million to the qualified pension plan and contributed $1 million to its grantor trust associated with the non-qualified plans. Based on current interest rates and expected returns, the Operating Partnership expects 2012 contributions to the qualified pension plan to range between $3 million and $7 million. During 2012, the Operating Partnership expects to contribute between $0 million and $2 million to its grantor trust associated with the non-qualified plans.

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Pension Cost and Assumptions. The components of pension cost recognized in net income are as follows for the years ended December 31 (in millions): 

	2011			2010			2009
Service Cost	$	6		$	6		$	7
Interest Cost	8			7			8
Expected Return on Plan Assets	(7		)	(7		)	(8		)
Recognized Actuarial Loss	2			2			2
Settlement Loss	—			—			5
Total Pension Cost	$	9		$	8		$	14

During 2009, the Operating Partnership permanently closed two lumber mills, curtailed two lumber mills and had additional employee terminations. The majority of the employees terminated elected to receive a lump-sum distribution from the pension plan. In accordance with the accounting for settlements, curtailments and certain termination benefits, we recorded a $5 million settlement loss as a result of the lump-sum distributions for the year ended December 31, 2009. The settlement loss represents a partial recognition of the actuarial pension loss reflected in accumulated other comprehensive income. It is the Operating Partnership’s accounting policy to recognize a settlement gain or loss when total settlements for the year exceed the sum of the current period interest and service costs.

The components of pension cost recognized in comprehensive income are as follows for the years ended December 31 (in millions): 

	2011			2010			2009
Net Actuarial Loss (Gain)	$	31		$	(6	)	$	(3	)
Amortization of Net Actuarial Loss	(2		)	(2		)	(2		)
Effect of Settlements and Curtailments	—			—			(5		)
Total (Gain) Loss Recognized in Other Comprehensive Income	$	29		$	(8	)	$	(10	)
Combined Pension Cost Recognized in Comprehensive Income	$	38		$	—		$	4

Amounts included in accumulated other comprehensive income are as follows as of December 31 (in millions):

	2011			2010
Net Loss	$	53		$	24
Deferred Tax Benefit	$	(12	)	$	(6	)

During 2012, we expect $4 million of the $53 million net actuarial loss to be included as a component of our total pension cost.

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The qualified pension plan allows terminated employees to elect to receive pension benefits either as a lump-sum distribution or as annuity payments. The non-qualified plans only provide for lump-sum distributions. Management estimates that approximately half of the qualified plan participants will elect a lump-sum payment upon termination. Therefore, approximately 50% of the benefit obligation for the qualified plan is discounted based on high quality corporate bond yields while approximately 50% of the qualified plan and 100% of the non-qualified plans are discounted based on yields on 30-year U.S. Treasury bonds. Weighted-average assumptions used to determine benefit obligation are as follows: 

	December 31, 2011		December 31, 2010
Discount Rates
Annuity Distributions	4.95	%	5.90	%
Lump-Sum Distributions	3.02	%	4.19	%
Rate of Compensation Increase	3.45	%	3.45	%

Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31: 

	2011		2010		2009
Discount Rate	5.90	%	5.90	%	6.85	%
Expected Long-Term Return on Plan Assets	7.50	%	7.75	%	7.75	%
Rate of Compensation Increase	3.45	%	3.45	%	3.70	%

To develop the expected long-term rate of return on plan assets assumption, the Operating Partnership considered the current level of expected returns on risk-free investments (primarily government bonds), the historical level of the risk premium associated with the other asset classes in which the portfolio is invested and the expectations for future returns on each asset class. The expected return for each asset class was then weighted based on the target asset allocation to develop the expected long-term rate of return on plan assets assumption for the portfolio. This resulted in the selection of the 7.50% assumption as of January 1, 2011 and the 7.75% assumption as of January 1, 2010.

The market related value of plan assets for the qualified plan is a calculated value that spreads unexpected investment returns over three years. The market-related value of assets held in a grantor trust for the non-qualified plans is fair market value. There has been no change in the method for determining the market-related value of assets since the prior valuation.

Investment Policies and Strategies. Investment allocation decisions are made to achieve maximum returns at a reasonable risk for the Operating Partnership’s pension assets over a full market cycle and are made without regard to future pension obligations. At December 31, 2011, target allocations for the various asset classes are as follows:

Large Capitalization Domestic Equities	32	%
Small and Mid-Size Capitalization Domestic Equities	7	%
International Equities	26	%
Fixed Income	35	%

The Operating Partnership currently uses actively managed funds and index funds, utilizing seven fund managers, to capture favorable returns in various asset classes and to diversify risk. Mutual funds invest in a diversified portfolio. Equity Securities and Collective Trust Funds are invested in a diversified portfolio whereby no more than 5% of an equity portfolio can be invested in a single company and fund managers are expected to be well diversified with respect to industry and economic sectors. Equity investments are limited to common stocks, common stock equivalents and preferred stock. Additionally, no more than 10% of a fixed income portfolio can be invested in a single issuer (other than U.S. treasuries). Fixed income investments are limited to U.S. treasuries, agencies of the U.S. Government,

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domestic corporations, municipalities, domestic banks and other U.S. financial institutions. Pension assets are analyzed at least quarterly and rebalanced as needed to maintain the target allocations.

Over a full market cycle, the investment goals (net of related fees) for the Operating Partnership’s various asset classes are as follows:

• Large Cap. Domestic Equities—For actively managed funds performance should exceed the applicable benchmark (e.g., Russell 1000 Growth or Russell 1000 Value Indexes) by 0.50% per annum, while index funds should match the performance of the applicable benchmark (e.g. S&P 500 Index).

• Small and Mid. Cap. Domestic Equities—For index funds performance should match the applicable benchmark (e.g. Russell 2000 Index).

• International Equities—For actively managed funds performance should exceed the applicable benchmark (e.g. MSCI EAFE Index) by 1.00% per annum, while index funds should match the performance of the applicable benchmark (e.g. MSCI Emerging Markets Index).

• Fixed Income Securities—Fund performance should exceed the applicable benchmark (e.g., Barclays Capital Aggregate Bond, Barclays Capital High Yield, or Barclays Capital U.S. Credit Indexes) by 0.25% per annum.

Fair Value of Pension Plan Assets. The fair values of each major class of plan assets were as follows as of December 31, 2011 (in millions):

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	11		—		—		11
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	11		—		—		11
Small and Mid. Cap. Domestic Equity Securities	7		—		—		7
International Equity Securities	25		—		—		25
Fixed Income Securities	30		—		—		30
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		5		—		5
Total Investments Measured at Fair Value	$	84	$	16	$	—	$	100

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The fair values of each major class of plan assets were as follows as of December 31, 2010 (in millions): 

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	12		—		—		12
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	12		—		—		12
Small and Mid. Cap. Domestic Equity Securities	8		—		—		8
International Equity Securities	28		—		—		28
Fixed Income Securities	29		—		—		29
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		6		—		6
Total Investments Measured at Fair Value	$	89	$	17	$	—	$	106

The valuation techniques and inputs used to measure fair value for each major class of plan assets were as follows (there have been no changes in these techniques and inputs during the year ended December 31, 2011):

• The fair value of equity securities (common stocks) and mutual funds is derived from quoted market prices in active markets at the measurement date.

• The fair value of the underlying assets of the collective trust funds is determined using the net asset values. The net asset values are based on the fair value of the underlying assets of the funds, minus their liabilities, and then divided by the number of units outstanding at the valuation date. The funds are traded on private markets that are not active; however, the unit price is based primarily on observable market data of the fund’s underlying assets.

Projected Benefit Payments. The following table presents expected future benefit payments projected based on the same assumptions used by the Operating Partnership to measure the benefit obligation and estimate future employee service (in millions): 

Year	Projected Benefit Payments
2012	$	13
2013	13
2014	13
2015	13
2016	14
2017 through 2021	72

Thrift and Profit Sharing Plan. The Operating Partnership sponsors an employee thrift and profit sharing plan under Section 401(k) of the Internal Revenue Code. This plan covers substantially all full-time employees. The Operating Partnership matches employee contributions of up to six percent of compensation at rates ranging from 35% to 100%, depending upon financial performance.

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The employer match was 100% for 2011, 2010 and 2009. Amounts charged to expense relating to the Operating Partnership’s thrift and profit sharing plan were $4 million in 2011, 2010 and 2009.

NOTE 10. SHARE–BASED COMPENSATION PLANS

Plum Creek Timber Company, Inc. has a stockholder approved Stock Incentive Plan that provides for the award of non-qualified stock options, restricted stock and restricted stock units, value management awards and dividend equivalents. No dividend equivalents have been awarded since 2005. Certain executives and key employees of the Operating Partnership are covered by this plan. All of Plum Creek’s activities are conducted through the Operating Partnership, therefore all share-based compensation expense is allocated to the Operating Partnership. Proceeds from the exercise of Plum Creek stock options are retained by Plum Creek Timber Company, Inc.

Under Plum Creek’s Stock Incentive Plan (“the Plan”), there are 12.4 million shares of Plum Creek Timber Company, Inc. common stock reserved and eligible for issuance. At December 31, 2011, 6.3 million shares of the 12.4 million reserved shares have been used and, therefore, 6.1 million shares remain available for grants of non-qualified stock options, grants of restricted stock and restricted stock units, or payments of vested value management awards. The number of shares to be issued in connection with value management awards is not determined until the end of their respective performance periods. New shares are issued for payment under the Plan for awards that pay out in shares or where the participant can elect payment in shares.

Stock Options. Under the Plan, non-qualified stock options may be granted to any officer, director, employee, consultant or advisor of the Operating Partnership. Each stock option granted allows the recipient the right to purchase Plum Creek’s common stock at the fair market value of Plum Creek’s common stock on the date of the grant. Generally, the stock options have a ten-year term and vest over a four-year period at a rate of 25% per year. Under the Plan, the exercise price of an option may not be reduced. The company does not plan to grant any stock option awards in 2012. Currently, Plum Creek intends to eliminate stock option grants from annual incentive awards and redistribute the value of these grants between Restricted Stock Units and Value Management Awards.

Presented below is a summary of Plum Creek’s stock option Plan activity for the year ended December 31, 2011:

	Shares Subject to Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value (Millions)
Balance at January 1, 2011	3,291,305		$	35.59
Granted	579,350		41.55
Exercised/Surrendered	(327,280	)	30.52
Cancelled/Forfeited	(2,450	)	38.33
Outstanding, December 31, 2011	3,540,925		$	37.03	5.9	$	6
Vested or Expected to Vest, December 31, 2011	3,246,281		$	36.90	5.8	$	6
Exercisable, December 31, 2011	2,164,465		$	36.23	4.5	$	5

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The table below presents stock activity related to stock options exercised during the years ended December 31 (in millions): 

	2011		2010		2009
Proceeds from Stock Options Exercised	$	10	$	2	$	—
Intrinsic Value of Stock Options Exercised	$	4	$	1	$	—
Tax Benefit Related to Stock Options Exercised	$	1	$	—	$	—

The weighted-average measurement date fair values of stock option awards granted were computed using the Black-Scholes-Merton option valuation model with the following assumptions for the years ended December 31: 

	2011			2010			2009
Expected Term (years)	6			6			6
Risk-Free Interest Rate	2.7		%	2.7		%	2.0		%
Volatility	40.6		%	40.3		%	35.5		%
Dividend Yield	4.0		%	4.8		%	5.0		%
Weighted-Average Measurement Date Fair Value	$	11.60		$	9.00		$	7.02

The expected term of the options represents the estimated period of time until exercise and is based on the vesting period of the award and the historical exercise experience of similar awards. All participants were assumed to have similar exercise behavior. Expected volatility is based on historical volatility over the approximate expected term of the option.

Restricted Stock. Under the Plan, restricted stock of Plum Creek Timber Company, Inc. may be awarded to certain directors, officers and employees of the Operating Partnership. Restricted stock may not be sold, assigned, transferred, pledged or otherwise disposed of for a period of time from the date on which the restricted stock was granted. The recipients of restricted stock generally have the rights of stockholders of Plum Creek with respect to voting and receipt of dividends during the restricted period. Restricted stock generally vests six months from the grant date. The weighted-average grant date fair values of restricted stock awards granted for the years ended December 31, 2011, 2010 and 2009 were $41.99, $35.60 and $31.32, respectively. The fair value of restricted stock is based on the closing price of Plum Creek’s common stock on the date of grant.

Restricted stock awards activity was as follows for the year ended December 31, 2011:

	Shares		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	—		$	—
Granted	16,000		$	41.99
Vested	(16,000	)	$	41.99
Forfeited	—		$	—
Balance at December 31, 2011	—		$	—

The total fair value of restricted stock awards that vested during the years ended December 31, 2011, 2010 and 2009 was $0.7 million, $0.6 million and $0.6 million, respectively.

Restricted Stock Units. Under the Plan, restricted stock units of Plum Creek Timber Company, Inc. may be awarded to certain directors, officers and employees of the Operating Partnership. The recipients of restricted stock units

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generally have the right to receive a cash amount equal to any dividends paid on Plum Creek’s common stock during the restriction period and upon vesting, the right to receive an equal number of shares of Plum Creek’s common stock. Restricted stock units generally vest over a four-year period at a rate of 25% per year. If employment is terminated prior to vesting, all unvested restricted stock units are forfeited. The weighted-average grant date fair value of restricted stock units granted for the years ended December 31, 2011, 2010 and 2009 was $41.45, $35.27 and $33.73, respectively. The fair value of restricted stock units is based on the closing price of Plum Creek’s common stock on the date of grant.

Restricted stock unit activity was as follows for the year ended December 31, 2011:

	Units		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	247,866		$	37.09
Granted	103,760		$	41.45
Vested	(107,386	)	$	38.66
Forfeited	(440	)	$	38.34
Balance at December 31, 2011	243,800		$	38.25

The total fair value of restricted stock units that vested during the years ended December 31, 2011, 2010 and 2009 was approximately $4 million, $3 million and $2 million, respectively.

Value Management Awards. Value management awards provide incentive compensation to participants that is contingent upon Plum Creek’s performance over a three-year period measured separately against the performance of peer groups consisting of forest products companies, the S&P 500 Index and the Morgan Stanley REIT Index over the same period.

Value management awards are earned in whole or in part based on a sliding scale. No value management award is earned if Plum Creek’s total shareholder return is below the 50^th percentile of the peer group. The full value management award is earned if Plum Creek’s total shareholder return is above the 75^th percentile. A unit has a face value of $100. The value of an award between the 50^th and 75^th percentiles is based on a sliding scale between 0% and 200% of the face value. Amounts earned, if any, are paid in the quarter immediately following the end of the three-year performance period. Unless otherwise specified by the participant, each payment will be paid in cash, except that any officer not in compliance with Plum Creek’s stock ownership guidelines is required to receive up to half of the payment value in Plum Creek’s common stock. Generally, to be entitled to the payment, a participant must be employed by the Operating Partnership on the last day of the performance period.

Different performance ranges are expected to be established for the 2012 grant of value management awards. A unit granted in 2012 will have no value below the 25^th percentile and will have full value at the 85^th percentile or above. Performance between the 25^th percentile and the 85^th percentile is expected to be based on a sliding scale between 0% and 200% of face value.

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Value management awards activity was as follows for the year ended December 31, 2011:

	Units
Balance at January 1, 2011	211,080
Grants	80,730
Vested	(64,545	)
Forfeitures	(400	)
Balance at December 31, 2011	226,865

Presented below is a summary of outstanding value management awards and related fair values, unrecognized compensation expense and maximum value as of December 31, 2011 (dollars in millions): 

Performance Period	Outstanding Units	Fair Value (A)		Unrecognized Compensation Expense		Maximum Award Value (B)
2009 to 2011	68,945	$	0.0	$	0.0	$	13.8
2010 to 2012	77,340	$	3.0	$	0.9	$	15.5
2011 to 2013	80,580	$	6.4	$	3.6	$	16.1

^(A)  The estimated fair value includes unrecognized compensation expense.

^(B)  Maximum award value is based on a unit value of $200.

Presented below is a summary of earned and paid (primarily in cash) value management awards for the following three-year performance periods: 

Performance Period	Payout Value per Unit		Total Payout (millions)		Payment Date
2009 to 2011	$	0	$	0.0	Not Earned
2008 to 2010	$	0	$	0.0	Not Earned
2007 to 2009	$	200	$	11.1	1st Quarter 2010
2006 to 2008	$	200	$	10.6	1st Quarter 2009

Measurement of Compensation Costs for Value Management Awards. Grants of value management awards are classified and accounted for as liabilities. As a result, the expense recognized over the performance period for value management awards will equal the fair value (i.e., cash value) of an award as of the last day of the performance period multiplied by the number of awards that are earned. The quarterly expense is recognized during the performance period based on the fair value of value management awards as of the end of the most recent quarter. Prior to the end of the performance period, compensation costs for value management awards are based on the awards’ most recent quarterly fair values and the number of months of service rendered during the performance period.

Fair values for value management awards are computed based on Plum Creek’s historical relative total shareholder return compared to the peer group from the beginning of the performance period to the end of the most recent quarter, and its simulated relative total shareholder return through the end of the performance period. The simulated total shareholder return of Plum Creek and the peer group is computed using a Monte Carlo simulation. The key assumptions used in the simulation of Plum Creek’s and the peer group’s total shareholder return are volatility, beta (the measure of how Plum Creek’s stock moves relative to the market as a whole) and risk-free interest rate.

Accounting for Share-Based Compensation. Share-based employee compensation cost is recognized based on fair value (see “Accounting for Share-Based Compensation” in Note 1 of the Notes to Consolidated Financial Statements). Stock options and most restricted stock units vest 25% per year over a four-year vesting period.

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Compensation cost related to these awards is recognized using the straight-line method over the four-year vesting period. Total compensation expense for all share-based compensation plans (including both awards paid in stock and cash) was approximately $10 million, $5 million and $12 million for the years ended December 31, 2011, 2010, and 2009, respectively. For the years ended December 31, 2011, 2010 and 2009, the Operating Partnership recognized $2 million, $1 million and $2 million, respectively, in tax benefits associated with share-based compensation plans. At December 31, 2011, there was $17 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plan. That cost is expected to be recognized over a weighted-average period of approximately two years.

NOTE 11. DETAIL OF CERTAIN BALANCE SHEET ACCOUNTS

Certain balance sheet accounts consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Other Current Assets
Prepaid Expenses	$	7	$	6
Taxes Receivable	3		2
Notes Receivable	2		5
Cash Held in Escrow	—		9
Other	3		2
	$	15	$	24
Other Non-Current Assets
Real Estate Development Properties	$	13	$	14
Unamortized Debt Issue Costs	8		11
Deposits	5		5
Notes Receivable	8		10
Other	2		4
	$	36	$	44
Other Current Liabilities
Accrued Pension Liability	$	4	$	3
Workers’ Compensation	2		2
Other	2		2
	$	8	$	7
Other Non-Current Liabilities
Timber Obligations	$	6	$	6
Deferred Compensation	6		6
Long-Term Incentive Compensation	3		2
Accrued Pension Liability	60		26
Deferred Revenue	20		22
Workers’ Compensation	10		10
Other	4		5
	$	109	$	77

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NOTE 12. COMMITMENTS AND CONTINGENCIES

Contingencies. The Operating Partnership is subject to regulations regarding forest, harvest and manufacturing practices and is, from time to time, involved in various legal proceedings, including environmental and regulatory matters, incidental to its business. Reserves have been established for any probable losses.

Unrecorded Contingencies. Management currently believes that resolving pending legal proceedings against the Operating Partnership, individually or in aggregate, will not have a material adverse impact on our financial position or results of operations. However, these matters are subject to inherent uncertainties and management’s view on these matters may change in the future. Were an unfavorable final outcome in one or multiple legal proceedings to occur, there exists the possibility of a material adverse impact on our financial position and the results of operations for the period in which any unfavorable outcome becomes reasonably estimable.

Contractual Obligations. The Operating Partnership has contracted to source logs and supply fiber with customers under long-term agreements at prevailing market rates. The agreements expire beginning in 2012 through 2029, with various renewal options by either party for periods ranging from two years to fifteen additional years.

Unconditional Purchase Obligations. During 2011, the Operating Partnership entered a long-term agreement for the purchase of urea which will primarily be used in applying fertilizer to our timberlands to improve growth rates. The Operating Partnership is obligated to purchase fixed quantities of urea each year for a fifteen-year period upon the completion of the supplier's manufacturing facility and starting no later than 2014. The price per ton for urea is generally fixed; however, certain components of the price are subject to adjustment for inflation or the cost of raw materials, and the overall price per ton is subject to a cap and floor. Management does not expect these pricing adjustments will be significant and estimates that starting in 2014 annual payments under the supply agreement will be $15 million or $230 million over the life of the purchase agreement.

Lease Commitments. The Operating Partnership leases buildings and equipment under non–cancelable operating lease agreements. Operating lease expense was $3 million, $4 million, and $5 million in 2011, 2010 and 2009, respectively. Additionally, the Operating Partnership has timber obligations related to certain timberlands where the Operating Partnership acquired title to standing timber at the inception of the leases. The following summarizes the future minimum operating lease payments and obligations in connection with leasing timberlands at December 31, 2011 (in millions): 

	Operating Leases		Timber Obligations
2012	$	3	$	1
2013	3		1
2014	2		—
2015	2		—
2016	1		—
Thereafter	1		4
Total	$	12	$	6

NOTE 13. TIMBERLAND VENTURE - EQUITY METHOD INVESTMENT

In 2008, a subsidiary of the Operating Partnership, Plum Creek Timber Operations I, LLC (“PC Member”), contributed 454,000 acres of timberlands located in its Southern Resources Segment to Southern Diversified Timber, LLC (“the Timberland Venture”) in exchange for a $705 million preferred interest and a 9% common interest valued at $78 million. The Timberland Venture’s other member, an affiliate of The Campbell Group LLC, contributed $783 million of cash in exchange for 91% of the Timberland Venture’s common interest. Following the formation of the Timberland Venture,

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PC Ventures borrowed $783 million from the Timberland Venture. PC Ventures used the proceeds from the borrowing to make a $783 million capital contribution to the Operating Partnership. See Note 8 of the Notes to Consolidated Financial Statements.

PC Member’s preferred interest in the Timberland Venture is entitled to a cumulative preferred return equal to 7.875% per annum (approximately $56 million). The Timberland Venture cannot make distributions on the common interests until all current period and prior period preferred returns have been paid. Preferred return distributions are payable on March 15th and September 15th each year.

The activities of the Timberland Venture consist primarily of the ownership of timberlands and entering into cutting contracts with an affiliate of The Campbell Group for the sale and harvesting of timber. An affiliate of The Campbell Group is the manager of the Timberland Venture. The manager and the other member control the day-to-day operating decisions of the Timberland Venture. PC Member retains certain protective rights that require its consent before the Timberland Venture can take certain actions. For example, without PC Member’s consent and subject to certain exceptions, the Timberland Venture generally cannot sell properties, incur indebtedness, file for bankruptcy or enter into contracts with affiliates which are not arm’s length.

No gain was recognized in connection with the contribution of the timberlands to the venture in 2008. The book basis in the contributed timberlands was $174 million, and PC Member capitalized costs of $9 million in connection with the transfer. The Timberland Venture recorded the contributed timberlands at fair value, or $783 million. The difference between the beginning book basis in the venture ($174 million) and PC Member’s share of the equity in the net assets of the venture ($783 million) was allocated between standing timber ($289 million) and land ($320 million). In addition to the allocation of earnings to our common and preferred interests, the basis difference associated with standing timber is amortized into equity earnings based on the timber harvested during the period compared to the timber expected to be harvested over one timber rotation (approximately 27 years). The basis difference associated with land is recognized in equity earnings in the period in which timberlands are sold by the venture based on a per acre rate. Since the inception of the Timberland Venture through December 31, 2011, the Operating Partnership has recognized $21 million in equity earnings related to the amortization of the basis difference.

Both our preferred and common interests are accounted for based on the equity method of accounting. Equity earnings of the Timberland Venture are first allocated to our preferred interest to the extent of our preferred return with any excess earnings allocated among the common interests based on ownership percentage (i.e., 9% to our common interest). All of the equity earnings will be allocated to our preferred interest in years in which our preferred return equals or exceeds the earnings of the Timberland Venture. To the extent of any shortfall in equity earnings (cumulative preferred return in excess of allocated equity earnings), future years’ earnings will be allocated to our preferred interest when the earnings of the Timberland Venture exceed our preferred return. At December 31, 2011, the cumulative shortfall in allocated equity earnings is $20 million. In addition to equity earnings associated with our common and preferred interests, equity earnings include the amortization of the difference between the book basis of our investment in the Timberland Venture and our share of the Timberland Venture’s net assets. Equity earnings for the Timberland Venture consist of the following for the years ended December 31 (in millions): 

	2011		2010		2009
Preferred Interest	$	50	$	50	$	48
Common Interest	—		—		—
Amortization of Basis Difference	6		7		7
Total Equity Earnings from Timberland Venture	$	56	$	57	$	55

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PLUM CREEK TIMBERLANDS, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Distributions from the Timberland Venture consist of the following for the years ended December 31 (in millions):

	2011		2010		2009
Preferred Interest	$	56	$	56	$	53
Common Interest	—		1		—
Total Distributions from Timberland Venture	$	56	$	57	$	53

The Timberland Venture can only be liquidated with the consent of both members. However, upon the nine year anniversary of the Timberland Venture, PC Member has the right for a six-month period to cause the Timberland Venture to redeem the other member’s interest. The other Timberland Venture member has a similar redemption right after the seven year anniversary. Upon liquidation or redemption, the members’ interests (i.e. capital accounts) will be adjusted to reflect the fair value of the Timberland Venture’s net assets. The adjustment would first be allocated to our preferred interest if there exists an accumulated shortfall in net income attributable to our preferred interest but only to the extent that the fair value of the net assets of the Timberland Venture exceed book basis.

For the years ended December 31, 2011, 2010, and 2009, the Timberland Venture was considered a Significant Subsidiary in accordance with the financial reporting requirements of the Securities and Exchange Commission. Accordingly, the audited financial statements of the Timberland Venture are attached as an exhibit to Plum Creek’s 2011 Form 10-K filing.

NOTE 14. VARIABLE INTEREST ENTITIES

The Timberland Venture (see Note 13 of the Notes to Consolidated Financial Statements) is a variable interest entity. The primary operating activities of the Timberland Venture consist of owning timberlands and entering into cutting contracts with an affiliate of the other member. Besides quarterly distributions to PC Ventures which it uses to fund interest payments on the loan owed by PC Ventures, the Operating Partnership has not provided financing or other support to the venture. The venture is financed by a $15 million line of credit obtained by the Timberland Venture.

We are not the primary beneficiary of the Timberland Venture. PC Member does not manage the day-to-day operations of the Timberland Venture, has only limited protective rights and its involvement is generally limited to receiving distributions on its preferred and common interests. We are not the primary beneficiary because we do not direct the activities that most significantly impact the Timberland Venture’s economic performance. We believe that the activities that most significantly impact the Timberland Venture’s economic performance include managing the timberlands along with the timing and extent of the harvesting activities, neither of which we control.

The carrying amount of the investment is $201 million at December 31, 2011 and $201 million at December 31, 2010, and it is reported in the Consolidated Balance Sheets as Equity Investment in Timberland Venture. Our maximum exposure to loss is $201 million, the carrying amount of the investment. Generally, losses are first allocated among the common interests based on positive capital accounts in which we hold a 9% common interest. No losses are allocated to our preferred interest ($705 million) until the common interests have absorbed losses of approximately $861 million.

NOTE 15. RELATED PARTY TRANSACTIONS

Transactions with Parent. The Operating Partnership’s parent, Plum Creek Timber Company, Inc., provides share-based compensation plans that cover employees of the Operating Partnership (see Note 10 of the Notes to Consolidated Financial Statements). All of Plum Creek’s activities are conducted through the Operating Partnership. Therefore, all share-based compensation expense is allocated to the Operating Partnership.

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PLUM CREEK TIMBERLANDS, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Transactions with Other Related Parties. A subsidiary of the Operating Partnership, Plum Creek Timber Operations I, LLC (“PC Member”) has a common and preferred interest in Southern Diversified Timber, LLC (“the Timberland Venture”), which is accounted for under the equity method of accounting. See Note 13 of the Notes to Consolidated Financial Statements. Equity earnings and distributions from the Timberland Venture were as follows for the years ended December 31 (in millions): 

	2011		2010		2009
Equity Earnings	$	56	$	57	$	55
Distributions	56		57		53

In 2008, PC Ventures borrowed $783 million from the Timberland Venture for a 10-year term at a fixed annual interest rate of 7.375%. PC Ventures used the proceeds from the borrowing to make a $783 million capital contribution to the Operating Partnership in exchange for a Series T-1 Redeemable Preferred Limited Partnership Interest. See Note 8 of the Notes to Consolidated Financial Statements. The Operating Partnership made the following cash distributions to PC Ventures for the years ended December 31 (in millions): 

	2011		2010		2009
Cash Distributions	$	58	$	58	$	58

NOTE 16. SEGMENT INFORMATION

The Operating Partnership is organized into five operating segments based on the nature of the business activities of each component. Each operating segment has a separate management team. The measurement of operating segment results is generally consistent with the presentation of the Consolidated Statements of Income. Intersegment Revenues are recorded at market prices, which are determined at least quarterly, and are eliminated in the consolidated results. Several operating segments have sales outside of the U.S. (see Export Revenues), but the Operating Partnership does not hold any long-lived foreign assets. These operating segments represent the Operating Partnership’s five reportable segments, which are: (1) Northern Resources, (2) Southern Resources, (3) Real Estate, (4) Manufactured Products and (5) Other.

Northern Resources Segment. The Northern Resources Segment consists of timberlands located in Maine, Michigan, Montana, New Hampshire, Oregon, Vermont, Washington, West Virginia and Wisconsin. The Northern Resources Segment grows timber for sale primarily in domestic regional markets. Additionally, some logs are sold in export markets, mainly to China and Canada. The Northern Resources Segment sells softwood and hardwood sawlogs and softwood and hardwood pulpwood. Softwood sawlogs are sold primarily to regional lumber and plywood manufacturers. Logs harvested in Montana are sold mostly to the Operating Partnership’s Manufactured Products Segment (see Intersegment Revenues). Hardwood sawlogs are sold primarily to regional lumber and plywood manufacturers. Softwood and hardwood pulpwood is sold to regional paper and packaging manufacturers.

Southern Resources Segment. The Southern Resources Segment consists of timberlands located in Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina and Texas. The Southern Resources Segment grows timber for sale in domestic regional markets. The Southern Resources Segment sells primarily softwood sawlogs and pulpwood. Softwood sawlogs are sold to regional lumber and plywood manufacturers. Softwood pulpwood is sold to regional paper and packaging manufacturers and also to producers of oriented strand board. Additionally, the Southern Resources Segment leases a portion of our timberlands to third parties on an annual basis for recreational purposes.

Real Estate Segment. The Real Estate Segment consists of sales of higher value timberlands and non-strategic timberlands. We estimate that included in the Operating Partnership’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands

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PLUM CREEK TIMBERLANDS, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. The Operating Partnership has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller scale transactions over the near and medium term. In addition to these 300,000 acres, the Operating Partnership may also make sales of non-strategic timberlands in larger scale transactions to commercial timberland buyers as opportunities arise. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries. Properties developed internally by the Operating Partnership will generally be low-intensity development limited to obtaining entitlements. Larger and more complicated projects needing more invested capital may be developed through third party ventures.

Manufactured Products Segment. The Manufactured Products Segment consists of two lumber mills (of which one mill is curtailed until markets improve), two plywood mills, two medium density fiberboard (“MDF”) facilities, one lumber remanufacturing facility in Idaho and one lumber remanufacturing facility in Montana (which is curtailed until markets improve). The lumber facilities produce boards, studs, and dimension lumber and the panel facilities produce high-quality plywood and MDF panels. All of these products are targeted to domestic wood products retailers, home construction, industrial customers, and to a lesser extent, for export primarily to Canada and Mexico. Residual chips that are not used internally may be sold to regional pulp and paper manufacturers. Revenues from manufactured products by product line were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Lumber	$	77	$	75	$	85
Plywood	75		73		62
MDF	121		117		98
Total	$	273	$	265	$	245

Other Segment. The Other Segment consists primarily of income associated with oil and natural gas production, mineral extraction and wind power development, along with communication and transportation rights of way. Some of these activities are conducted through our wholly-owned taxable REIT subsidiaries.

The Operating Partnership evaluates performance of the segments based on operating income before interest, unallocated corporate expenses and taxes. Asset information is not reported by segment, as the Operating Partnership does not produce such information internally.

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PLUM CREEK TIMBERLANDS, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

The tables below present information about reported segments for the years ended December 31 (in millions):

	Northern Resources			Southern Resources		Real Estate(A)		Manufactured Products(B)			Other(C)		Total(D)
2011
External Revenues	$	213		$	359	$	301	$	273		$	21	$	1,167
Intersegment Revenues	20			—		—		—			—		20
Export Revenues	26			—		—		25			—		51
Depreciation, Depletion and Amortization	26			51		2		13			—		92
Basis of Real Estate Sold	—			—		77		—			—		77
Other Operating Gain	—			—		—		—			2		2
Operating Income (Loss)	24			74		195		15			21		329
2010
External Revenues	$	192		$	377	$	336	$	265		$	20	$	1,190
Intersegment Revenues	18			—		—		—			—		18
Export Revenues	14			—		—		24			—		38
Depreciation, Depletion and Amortization	28			50		2		12			—		92
Basis of Real Estate Sold	—			—		132		—			—		132
Other Operating Gain	1			—		—		2			5		8
Operating Income (Loss)	13			107		180		24			23		347
2009
External Revenues	$	198		$	347	$	486	$	245		$	18	$	1,294
Intersegment Revenues	14			—		—		—			—		14
Export Revenues	11			—		—		21			—		32
Depreciation, Depletion and Amortization	30			51		1		23			—		105
Basis of Real Estate Sold	—			—		155		—			—		155
Operating Income (Loss)	(3		)	81		278		(23		)	17		350

^(A)  The Operating Partnership recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.

During 2009, the Operating Partnership completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.

During 2008, the Operating Partnership negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

^(B)  During 2010, the Operating Partnership sold certain lumber manufacturing assets for a gain of $2 million. The

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PLUM CREEK TIMBERLANDS, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

^(C)  During 2011, the Operating Partnership received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the Operating Partnership agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the Operating Partnership received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The Operating Partnership allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term.

^(D)  Consolidated depreciation, depletion and amortization includes unallocated corporate depreciation of $4 million for 2011, 2010 and 2009.

A reconciliation of total segment operating income to income before income taxes is presented below for the years ended December 31 (in millions):

	2011			2010			2009
Total Segment Operating Income	$	329		$	347		$	350
Corporate and Other Unallocated Expenses	(55		)	(51		)	(51		)
Other Unallocated Operating Income (Expense), net	1			1			—
Operating Income	275			297			299
Equity Earnings from Timberland Venture	56			57			55
Interest Expense, net	(81		)	(80		)	(89		)
Gain (Loss) on Extinguishment of Debt	—			(13		)	(2		)
Income before Income Taxes	$	250		$	261		$	263

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PLUM CREEK TIMBERLANDS, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 17. UNAUDITED SELECTED QUARTERLY FINANCIAL DATA

(In Millions)	1st Quarter  (A)		2nd Quarter		3rd Quarter		4th Quarter  (B)
2011
Revenues	$	275	$	284	$	293	$	315
Gross Profit	85		88		93		112
Operating Income	60		63		69		83
Net Income Available to Common Interest Partners	38		44		50		61
2010
Revenues	$	317	$	258	$	259	$	356
Gross Profit	119		73		71		120
Operating Income	95		56		51		95
Income from Continuing Operations	76		35		32		59
Net Income Available to Common Interest Partners	87		35		32		59

^(A)  The Operating Partnership’s 2010 first quarter net income includes an $11 million Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

^(B)  During the fourth quarter of 2010, the Operating Partnership paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

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Report of Independent Registered Public Accounting Firm

The Partners of

Plum Creek Timberlands, L.P.

We have audited the accompanying consolidated balance sheets of Plum Creek Timberlands, L.P. as of December 31, 2011 and 2010, and the related consolidated statements of income, partnership capital, comprehensive income, and cash flows for each of the three years in the period ended December 31, 2011. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. We were not engaged to perform an audit of the Company’s internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Plum Creek Timberlands, L.P. at December 31, 2011 and 2010, and the consolidated results of its operations, comprehensive income, and its cash flows for each of the three years in the period ended December 31, 2011, in conformity with U.S. generally accepted accounting principles.

/s/ Ernst & Young LLP

Seattle, Washington

February 24, 2012

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ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

Evaluation of Controls and Procedures

Disclosure Controls and Procedures

The company’s management, with the participation of the company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the company’s disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended) as of the end of the period covered by this report. Based on that evaluation, the company’s management, including the Chief Executive Officer and Chief Financial Officer, has concluded that the company’s disclosure controls and procedures were effective as of the end of such period.

Control over Financial Reporting

There have been no changes in the company’s internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended) during the quarter to which this report relates that have materially affected, or are reasonably likely to materially affect, the company’s internal control over financial reporting.

Management’s Report on Internal Control over Financial Reporting

The management of Plum Creek Timber Company, Inc. is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended). Our system of internal control over financial reporting is designed to provide reasonable assurance to the company’s management and Board of Directors regarding the preparation and fair presentation of the consolidated financial statements for external purposes in accordance with generally accepted accounting principles.

Plum Creek Timber Company, Inc.’s management, under the supervision of the Chief Executive Officer and Chief Financial Officer, assessed the effectiveness of our internal control over financial reporting as of December 31, 2011. In making this assessment, we used the framework included in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on our evaluation under the criteria set forth in Internal Control – Integrated Framework, management concluded that our internal control over financial reporting was effective as of December 31, 2011.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions or that the degree of compliance with the policies or procedures may deteriorate.

The effectiveness of our internal control over financial reporting as of December 31, 2011, has been audited by Ernst & Young LLP, an independent registered public accounting firm, as stated in their report, which is included herein.

ITEM 9B. OTHER INFORMATION

None.

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Table of Contents PART III / ITEM 10

Part III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Information about the company’s executive officers, code of ethics and certain other corporate governance matters is presented in Part I of this Form 10-K. Information under the following captions in the company’s 2012 Annual Meeting Proxy Statement is incorporated herein by reference: “Proposal 1 – Election of Directors”; “Section 16(a) Beneficial Ownership Reporting Compliance”; “Board of Directors and Corporate Governance – Selection of Nominees to the Board of Directors”; and “Board of Directors and Corporate Governance – Board Committees – Audit Committee”.

ITEM 11. EXECUTIVE COMPENSATION

Information under the following captions in the company’s 2012 Annual Meeting Proxy Statement is incorporated herein by reference: “Executive Compensation”; “Compensation Committee Interlocks and Insider Participation”; “Compensation Committee Report”; and “Board of Directors and Corporate Governance – Director Compensation”.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Information under the following captions in the company’s 2012 Annual Meeting Proxy Statement is incorporated herein by reference: “Executive Compensation – Equity Compensation Plan Information”; and “ Security Ownership of Certain Beneficial Owners and Management”.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

Information under the following captions in the company’s 2012 Annual Meeting Proxy Statement is incorporated herein by reference: “Related Party Transactions”; “Compensation Committee Interlocks and Insider Participation”; “Board of Directors and Corporate Governance – Director Independence”; and “Board of Directors and Corporate Governance – Board Committees – Audit Committee”.

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

Information under the following caption in the company’s 2012 Annual Meeting Proxy Statement is incorporated herein by reference: “Independent Auditors – Fees to the Independent Auditors for 2010 and 2011.”

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Part IV

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

Documents filed as a part of this report

Financial Statements and Supplementary Financial Information

The following consolidated financial statements of the company are included in Part II, Item 8 of this Form 10–K:

PLUM CREEK TIMBER COMPANY, INC.
Consolidated Statements of Income	56
Consolidated Statements of Comprehensive Income	57
Consolidated Balance Sheets	58
Consolidated Statements of Stockholders’ Equity	59
Consolidated Statements of Cash Flows	60
Notes to Consolidated Financial Statements	61
Report of Independent Registered Public Accounting Firm	99
Report of Independent Registered Public Accounting Firm on Internal Control over Financial Reporting	100
PLUM CREEK TIMBERLANDS, L.P.
Consolidated Statements of Income	101
Consolidated Statements of Comprehensive Income	102
Consolidated Balance Sheets	103
Consolidated Statements of Partnership Capital	104
Consolidated Statements of Cash Flows	105
Notes to Consolidated Financial Statements	106
Report of Independent Registered Public Accounting Firm	141
Management’s Report on Internal Control over Financial Reporting	142

Financial Statement Schedules

All financial statement schedules have been omitted because they are not applicable, not material or the required information is shown in the consolidated financial statements or the notes thereto.

List of Exhibits

Each exhibit set forth below in the Index to Exhibits is filed as a part of this report. All exhibits not filed herewith are incorporated herein by reference to a prior filing as indicated. Exhibits designated by a positive sign (“+”) indicate management contracts or compensatory plans or arrangements.

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Table of Contents EXHIBITS

Index to Exhibits

The agreements included as exhibits to this report are included to provide information about their terms and not to provide any other factual or disclosure information about the company or the other parties to the agreements. The agreements may contain representations and warranties by each of the parties to the applicable agreement that were made solely for the benefit of the other parties to the agreement and:

• should not be treated as categorical statements of fact, but rather as a way of allocating the risk among the parties if those statements prove to be inaccurate;

• may have been qualified by disclosures that were made to the other party in connection with the negotiation of the applicable agreement, which disclosures are not necessarily reflected in the agreement;

• may apply standards of materiality in a way that is different from what may be viewed as material to investors; and

• were made only as of the date of the applicable agreement or such other date or dates as may be specified in the agreement and are subject to more recent developments.

Accordingly, these representations and warranties may not describe the actual state of affairs as of the date they were made or at any other time.

Exhibit Designation	Nature of Exhibit
2.1	Agreement and Plan of Merger by and among Georgia-Pacific Corporation, North American Timber Corp., NPI Timber, Inc., GNN Timber, Inc., GPW Timber, Inc., LRFP Timber, Inc., NPC Timber, Inc. and Plum Creek Timber Company, Inc. (Form 8-K/A, File No. 1-10239, filed July 24, 2000). Amendment No.1 to the Agreement and Plan of Merger, dated as of June 12, 2001 (Exhibit 2.1 to Form 8-K, File No. 1-10239, filed June 14, 2001).
2.2	Purchase and Sale Agreement by and among North American Timber Corp., Georgia-Pacific Corporation and Hawthorne Timber Company, LLC dated as of October 29, 1999 (Exhibit 2.6 to Form 10-K, file No. 1-10239, for the year ended December 31, 2002).
2.3	Contribution Agreement dated as of August 22, 2008 between Plum Creek Timber Operations I, LLC and TCG Member, LLC (Exhibit 2.1 to Form 8-K, File No. 1-10239, filed August 27, 2008).
2.4	Limited Liability Company Agreement of Southern Diversified Timber, LLC dated as of October 1, 2008 between Plum Creek Timber Operations I, LLC and TCG Member, LLC (Exhibit 2.2 to Form 8-K, File No. 1-10239, filed October 7, 2008).
2.5	Real Estate Purchase and Sale Agreement dated as of June 30, 2008, by and among Plum Creek Timberlands, L.P., a Delaware limited partnership, and Plum Creek Land Company, a Delaware corporation, as Sellers, and The Nature Conservancy, a non-profit corporation of the District of Columbia, and The Trust for Public Land, a California non-profit public benefit corporation, as Purchasers (Exhibit 2.1 to Form 8-K, File No. 1-10239, filed June 30, 2008). Third Amendment to Real Estate Purchase and Sale Agreement dated as of January 13, 2009, by and among Plum Creek Timberlands, L.P., a Delaware limited partnership, and Plum Creek Land Company, a Delaware corporation, as Sellers, and The Nature Conservancy, a non-profit corporation of the District of Columbia, and The Trust for Public Land, a California non-profit public benefit corporation, as Purchasers (Exhibit 2.1 to Form 8-K, File No. 1-10239, filed January 15, 2009).
3.1	Restated Certificate of Incorporation of Plum Creek Timber Company, Inc., as amended (Exhibit 3.1 to Form 10-Q, File No. 1-10239, for the quarter ended June 30, 2009).
3.2	Amended and Restated By-laws of Plum Creek Timber Company, Inc., as amended (Exhibit 3.2 to Form 10-K, File No. 1-10239, for the year ended December 31, 2010).
3.3	Amended and Restated Agreement of Limited Partnership of Plum Creek Timberlands, L.P. (Exhibit 3.3 to Form 10-K, File No. 1-10239, for the year ended December 31, 2010).

PLUM CREEK 2011 FORM 10-K | 145

Table of Contents EXHIBITS

4.1	Base Note Indenture (including Form of Note and Guarantee), dated as of November 14, 2005, by and among Plum Creek Timberlands, L.P., as issuer, Plum Creek Timber Company, Inc., as guarantor, and U.S. Bank National Association, as trustee, governing the terms of the 5.875% Senior Notes due 2015 and the 4.70% Senior Notes due 2021 (Exhibit 4.1 to Form 8-K, File No. 1-10239, filed November 14, 2005).
4.2	Officer's Certificate, dated November 14, 2005, executed by Plum Creek Timberlands, L.P., as issuer, establishing the terms and form of the 5.875% Senior Notes due 2015 (Exhibit 4.2 to Form 8-K, File No. 1-10239, filed November 14, 2005).
4.3	Officer's Certificate, dated May 2, 2006, executed by Plum Creek Timberlands, L.P., as issuer, reopening the 5.875% Senior Notes due 2015 (Exhibit 4.3 to Form 8-K, File No. 1-10239, filed on May 2, 2006).
4.4	Officer's Certificate, dated November 15, 2010, executed by Plum Creek Timberlands, L.P., as issuer, establishing the terms and form of the 4.70% Senior Notes due March 15, 2021 (Exhibit 4.2 to Form 8-K, File No. 1-10239, filed November 15, 2010).
4.5	Senior Note Agreement, dated as of October 9, 2001, by and among Plum Creek Timberlands, L.P. and the lenders party thereto governing the terms of the Series J notes due October 1, 2011 and Series K notes due October 1, 2013. (Exhibit 4.1 to Form 8-K File No. 1‑10239, filed October 9, 2001). First Amendment to Senior Note Agreement, dated as of December 19, 2002 by and among Plum Creek Timberlands, L.P. and the lenders party thereto governing the terms of the Series J notes due October 1, 2011 and Series K notes due October 1, 2013 (Exhibit 4.1 to Form 10-K, File No. 1-10239, for the year ended December 31, 2002). First Omnibus Amendment to Senior Note Agreements, dated as of August 18, 2008 by and among Plum Creek Timberlands, L.P. and the lenders party thereto governing the terms of the Series J notes due October 1, 2011 and Series K notes due October 1, 2013 (Exhibit 4.1 to Form 8-K, File No. 1-10239, filed August 22, 2008).
4.6	The registrant agrees that it will furnish the Commission a copy of any of its debt instruments not listed herein upon request.
10.1	Revolving Credit Agreement, dated as of December 14, 2010, by and among Plum Creek Timberlands, L.P., Bank of America, N.A., as Administrative Agent, The Bank of Tokyo-Mitsubishi UFJ, Ltd. and The Royal Bank of Scotland plc, as Syndication Agents, U.S. Bank National Association and Wells Fargo Bank, National Association, as Documentation Agents, Merrill Lynch, Pierce, Fenner & Smith Incorporated, The Bank of Tokyo-Mitsubishi UFJ, Ltd., RBS Securities Inc., U.S. Bank National Association and Wells Fargo Securities, LLC, as Joint Lead Arrangers, Merrill Lynch, Pierce, Fenner & Smith Incorporated, The Bank of Tokyo-Mitsubishi UFJ, Ltd. and RBS Securities Inc., as Joint Book Managers, and the lenders party thereto (Exhibit 10.1 to Form 8-K, File No. 1-10239, filed December 20, 2010).
10.2	Term Credit Agreement, dated as of June 15, 2007, by and among Plum Creek Timberlands, L.P., Bank of America, N.A., as Administrative Agent, SunTrust Bank, as Syndication Agent, The Bank of Tokyo-Mitsubishi UFJ, Ltd., Seattle Branch, and The Royal Bank of Scotland, as Documentation Agents, Banc of America Securities LLC and SunTrust Robinson Humphrey, a division of SunTrust Capital Markets, Inc., as Joint Lead Arrangers and Joint Book Managers, and the Other Financial Institutions Party Thereto (Exhibit 10.1 to Form 8-K, File No. 1-10239, filed June 21, 2007).
10.3	Credit Agreement and Guarantee, dated as of October 1, 2008, by and among Plum Creek Ventures I, LLC, Plum Creek Timber Company, Inc. and Southern Diversified Timber, LLC (Exhibit 10.1 to Form 8-K, File No. 1-10239, filed October 7, 2008).
10.4	Pledge Agreement, dated as of October 1, 2008, between Plum Creek Ventures I, LLC and Southern Diversified Timber, LLC (Exhibit 10.2 to Form 8-K, File No. 1-10239, filed October 7, 2008).
10.5+	Plum Creek Supplemental Pension Plan (Exhibit 10.5 to Form 10-K, File No. 1-10239, for the year ended December 31, 2010).
10.6+	Plum Creek Supplemental Benefits Plan (Exhibit 10.6 to Form 10-K, File No. 1-10239, for the year ended December 31, 2010).
10.7+	Plum Creek Pension Plan (Exhibit 10.7 to Form 10-K, File No. 1-10239, for the year ended December 31, 2010).
10.8+	Plum Creek Timber Company, Inc. Deferral Plan (Exhibit 10.1 to Form 8-K, File No. 1-10239, filed on June 24, 2005).
10.9+	Director Deferral Election Form (Exhibit 10.3 to Form 8-K, File No. 1-10239, filed on June 24, 2005).

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Table of Contents EXHIBITS

10.10+	Executive Deferral Election Form (Exhibit 10.4 to Form 8-K, File No. 1-10239, filed on June 24, 2005).
10.11+	Plum Creek Director Stock Ownership Plan (Exhibit 10.2 to Form 8-K, file No. 1-10239, filed on June 24, 2005).
10.12+	Plum Creek Timber Company, Inc. 2000 Stock Incentive Plan (Filed as an appendix to Plum Creek's definitive Proxy Statement on Schedule 14A, filed on March 31, 2000).
10.13+	Plum Creek Timber Company, Inc. Amended and Restated Stock Incentive Plan (Filed as an appendix to Plum Creek's definitive Proxy Statement on Schedule 14A, filed on March 29, 2004).
10.14+	Plum Creek Timber Company, Inc. Annual Incentive Plan (Exhibit 10.13 to Form 10-K, File No. 1-10239, for the year ended December 31, 2000). Annual Incentive Plan - Compensation Committee Guidelines for Executive Officers (Form 8-K, file No. 1-10239, filed on April 6, 2006). Annual Incentive Plan - Compensation Committee Guidelines for Executive Officers (Form 8-K, File No. 1-10239, filed on February 10, 2011).
10.15+	Form of Executive Stock Option, Dividend Equivalent Right and Value Management Award Agreement For Plan Years 2000, 2001, 2002 and 2003 (Exhibit 10.5 to Form 10-K, File No. 1-10239, for the year ended December 31, 2002).
10.16+	Form of Executive Stock Option, Dividend Equivalent Right and Value Management Award Agreement For Plan Years 2004 and 2005 (Exhibit 10.2 to Form 10-Q, File No. 1-10239, for the quarter ended June 30, 2004).
10.17+	Form of Executive Stock Option, Restricted Stock Unit and Value Management Award Agreement For Plan Year 2006 (Exhibit 10.2 to Form 8-K, File No. 1-10239, Filed on February 8, 2006).
10.18+	Form of Executive Stock Option, Restricted Stock Unit and Value Management Award Agreement For Plan Year 2007 (Exhibit 10.2 to Form 8-K, File No. 1-10239, Filed on February 8, 2007).
10.19+	Form of Executive Stock Option, Restricted Stock Unit and Value Management Award Agreement For Plan Year 2008 (Exhibit 10.18 to Form 10-K, File No. 1-10239, for the year ended December 31, 2007).
10.20+	Form of Executive Stock Option, Restricted Stock Unit and Value Management Award Agreement For Plan Year 2009 (Exhibit 10.20 to Form 10-K, File No. 1-10239, for the year ended December 31, 2008).
10.21+	Form of Executive Stock Option, Restricted Stock Unit and Value Management Award Agreement For Plan Year 2010 (Exhibit 10.21 to Form 10-K, File No. 1-10239, for the year ended December 31, 2009).
10.22+	Form of Executive Stock Option, Restricted Stock Unit and Value Management Award Agreement For Plan Year 2011 (Exhibit 10.22 to Form 10-K, File No. 1-10239, for the year ended December 31, 2010).
10.23+	Form of Amendment to Outstanding Executive Stock Option Award Agreements (Exhibit 10.4 to Form 10-Q, file No. 1-10239, for the quarter ended June 30, 2009).
10.24+	Form of Restricted Stock Unit Award Agreement for Thomas M. Lindquist For Plan Year 2007 (Exhibit 10.17 to form 10-K, File No. 1-10239, for the year ended December 31, 2006).
10.25+	Form of Director Stock Option and Dividend Equivalent Right Award Agreement For Plan Years 2002 and 2003 (Exhibit 10.16 to Form 10-K, File No. 1-10239, for the year ended December 31, 2002).
10.26+	Form of Amendment to Director Stock Option and Dividend Equivalent Right Award Agreement Effective For Plan Years 2002 and 2003 (Exhibit 10.17 to Form 8-K/A, File No. 1-10239, filed on September 2, 2004).
10.27+	Form of Amended and Restated Director Stock Option and Dividend Equivalent Right Award Agreement For Plan Year 2004 (Exhibit 10.16 to Form 8-K/A, File No. 1-10239, filed on September 2, 2004).
10.28+	Summary of Current Director Compensation (Exhibit 10.29 to Form 10-K, File No. 1-10239, for the year ended December 31, 2010).
10.29+	Form of Director and Officer Indemnity Agreement (Exhibit 10.21 to Form 10-K, File No. 1-10239, for the year ended December 31, 2004).

PLUM CREEK 2011 FORM 10-K | 147

Table of Contents EXHIBITS

12.1	Statements regarding computation of ratios.
21	Subsidiaries of the Registrant.
23.1	Consent of Ernst & Young LLP.
23.2	Consent of KPMG LLP.
24.1	Power of Attorney (Included on the signature page to this Annual Report on Form 10-K).
31.1	Certification of Rick R. Holley pursuant to Rules 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as amended.
31.2	Certification of David W. Lambert pursuant to Rules 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as amended.
32.1	Certification of Rick R. Holley, President and Chief Executive Officer, pursuant to Rules 13a-14(b) and 15d-14(b) of the Securities Exchange Act of 1934, as amended, and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of David W. Lambert, Senior Vice President and Chief Financial Officer, pursuant to Rules 13a-14(b) and 15d-14(b) of the Securities Exchange Act of 1934, as amended, and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes- Oxley Act of 2002.
99.1	Financial Statements of Southern Diversified Timber, LLC.
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.

PLUM CREEK 2011 FORM 10-K | 148

Signatures

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

PLUM CREEK TIMBER COMPANY, INC. (Registrant)
By:	/s/    RICK R. HOLLEY
	Rick R. Holley President and Chief Executive Officer

Power of Attorney

Each person whose signature to this Annual Report on Form 10-K appears below hereby constitutes and appoints Rick R. Holley, David W. Lambert and James A. Kraft, and each of them, as his or her true and lawful attorney-in-fact and agent, with full power of substitution, to sign on his behalf individually and in the capacity stated below and to perform any acts necessary to be done in order to file any and all amendments to this Annual Report on Form 10-K, and any and all instruments or documents filed as part of or in connection with this Annual Report on Form 10-K or any amendments thereto, and each of the undersigned does hereby ratify and confirm all that said attorney-in-fact and agent, or his substitutes, shall do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this Annual Report on Form 10-K has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

/s/    John F. Morgan, Sr.	Director, Chairman of the Board	February 24, 2012
John F. Morgan, Sr.		Date
	President and Chief Executive Officer, Director
/s/    Rick R. Holley		February 24, 2012
Rick R. Holley		Date
/s/    Robin Josephs	Director	February 24, 2012
Robin Josephs		Date
/s/    John G. McDonald	Director	February 24, 2012
John G. McDonald		Date
/s/    Robert B. McLeod	Director	February 24, 2012
Robert B. McLeod		Date
/s/    Marc F. Racicot	Director	February 24, 2012
Marc F. Racicot		Date
/s/    John H. Scully	Director	February 24, 2012
John H. Scully		Date
/s/    Lawrence A. Selzer	Director	February 24, 2012
Lawrence A. Selzer		Date
/s/    Stephen C. Tobias	Director	February 24, 2012
Stephen C. Tobias		Date
/s/    Martin A. White	Director	February 24, 2012
Martin A. White		Date
	Senior Vice President and Chief Financial Officer
/s/    David W. Lambert		February 24, 2012
David W. Lambert		Date
/s/    David A. Brown	Vice President, Chief Accounting Officer	February 24, 2012
David A. Brown		Date

PLUM CREEK 2011 FORM 10-K | 149

EX-12.1

Exhibit 12.1

Plum Creek Timber Company, Inc.

Ratio of Earnings to Fixed Charges

	Years Ended December 31,
(Dollars in Millions)	2011			2010			2009			2008			2007
Consolidated Pretax Income from Continuing Operations	$	136		$	146		$	150		$	193		$	279
Fixed Charges (per below)	144			143			153			158			155
Distributed Income of Equity Investees	56			57			53			—			—
Interest Capitalized	(1		)	(1		)	(1		)	(1		)	(1		)
Earnings	$	335		$	345		$	355		$	350		$	433
Interest and Other Financial Charges	$	141		$	140		$	150		$	154		$	151
Interest Portion of Rental Expense	3			3			3			4			4
Fixed Charges	$	144		$	143		$	153		$	158		$	155
Ratio of Earnings to Fixed Charges	2.3			2.4			2.3			2.2			2.8

Plum Creek Timberlands, L.P.

Ratio of Earnings to Fixed Charges

	Years Ended December 31,
(Dollars in Millions)	2011			2010			2009			2008			2007
Consolidated Pretax Income from Continuing Operations	$	194		$	204		$	208		$	207		$	279
Fixed Charges (per below)	86			85			95			144			155
Distributed Income of Equity Investees	56			57			53			—			—
Interest Capitalized	(1		)	(1		)	(1		)	(1		)	(1		)
Earnings	$	335		$	345		$	355		$	350		$	433
Interest and Other Financial Charges	$	83		$	82		$	92		$	140		$	151
Interest Portion of Rental Expense	3			3			3			4			4
Fixed Charges	$	86		$	85		$	95		$	144		$	155
Ratio of Earnings to Fixed Charges	3.9			4.1			3.7			2.4			2.8

During 2008, PC Ventures I, LLC (“PC Ventures”), a 100% wholly-owned subsidiary of Plum Creek Timber Company, Inc., made a $783 million capital contribution to Plum Creek Timberlands, L.P. in exchange for a Series T-1 Redeemable Preferred Limited Partnership Interest (“Series T-1 Preferred Interest”), a preferred interest in Plum Creek Timberlands, L.P. The Series T-1 Preferred Interest provides for a return of 7.375% per annum (approximately $58 million) on its contributed capital of $783 million. In the computation of the ratio of earnings to fixed charges for Plum Creek Timberlands, L.P. above, the Series T-1 Preferred Interest is not subtracted from Consolidated Pretax Income from Continuing Operations and has been excluded from the calculation of Fixed Charges because these transactions are between affiliated entities. Further discussion of the Series T-1 Preferred Interest in Plum Creek Timberlands, L.P. can be found in the audited consolidated financial statements of Plum Creek Timberlands, L.P. for the three years ended December 31, 2011, which were included on Form 10-K of Plum Creek Timber Company, Inc. and filed with the SEC on February 24, 2012.

EX-21

EXHIBIT 21

Subsidiaries of Plum Creek Timber Company, Inc.

State of Formation is Delaware unless otherwise noted:

Plum Creek Timberlands, L.P.

Plum Creek Timber I, L.L.C.

Plum Creek Ventures I, L.L.C.

Plum Creek Timber II, L.L.C.

Plum Creek Manufacturing, L.P.

Plum Creek Maine Timberlands, L.L.C.

Plum Creek Southern Timber, L.L.C.

Plum Creek South Central Timberlands, L.L.C.

Plum Creek Manufacturing Holding Company, Inc.

Plum Creek Marketing, Inc.

Plum Creek Northwest Lumber, Inc.

Plum Creek Northwest Plywood, Inc.

Plum Creek MDF, Inc.

Plum Creek Southern Lumber, Inc.

PC Timberland Investment Company

Plum Creek Investment Company (Oregon)

Plum Creek Land Company

Plum Creek Maine Marketing, Inc.

Plum Creek Timber Operations I, L.L.C.

Plum Creek Timber Operations II, Inc.

EX-23.1

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

• Registration Statement (Form S-3 No. 333-178443 and No. 333-178443-01) of Plum Creek Timber Company Inc. and Plum Creek Timberlands, L.P. and in the related prospectus,

• Registration Statement (Form S-8 No. 333-59812) pertaining to the Plum Creek Timber Company, Inc. 2000 Stock Incentive Plan, and

• Registration Statement (Form S-8 No. 333-123146) pertaining to the Plum Creek Timber Company, Inc. Amended and Restated Stock Incentive Plan;

of our reports dated February 24, 2012, with respect to the consolidated financial statements of Plum Creek Timber Company, Inc., and Plum Creek Timberlands, L.P. and the effectiveness of internal control over financial reporting of Plum Creek Timber Company, Inc., included in this Annual Report (Form 10-K) of Plum Creek Timber Company, Inc. for the year ended December 31, 2011.

/s/ Ernst & Young LLP    

Seattle, Washington

February 24, 2012

EX-23.2

Exhibit 23.2

Consent of Independent Auditors

The Members

Southern Diversified Timber, LLC:

We consent to the incorporation by reference in the registration statements (Nos. 333-178443, 333-178443-01, and 333-178419) on Form S-3 of Plum Creek Timber Company, Inc. and Plum Creek Timberlands, L.P. and registration statements (Nos. 333-59812 and 333-123146) on Form S-8 of Plum Creek Timber Company, Inc. of our report dated February 21, 2012, with respect to the balance sheets of Southern Diversified Timber, LLC as of December 31, 2011 and 2010, and the related statements of operations, members' equity, and cash flows for each of the years in the three-year period ended December 31, 2011, which report appears in the December 31, 2011 annual report on Form 10-K of Plum Creek Timber Company, Inc.

/s/ KPMG LLP

Portland, Oregon

February 21, 2012

EX-31.1

EXHIBIT 31.1

Certification Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, Rick R. Holley, certify that:

1. I have reviewed this annual report on Form 10-K of Plum Creek Timber Company, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent function):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	February 24, 2012
By: /s/ RICK R. HOLLEY
RICK R. HOLLEY
President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

Certification Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, David W. Lambert, certify that:

1. I have reviewed this annual report on Form 10-K of Plum Creek Timber Company, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent function):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	February 24, 2012
By: /s/ DAVID W. LAMBERT
DAVID W. LAMBERT
Senior Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

Certification Pursuant to

18 U.S.C. Section 1350,

As Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Annual Report on Form 10-K of Plum Creek Timber Company, Inc. (the “Company”) for the period ended December 31, 2011, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Rick R. Holley, as Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

Date:	February 24, 2012
By: /s/ RICK R. HOLLEY
RICK R. HOLLEY
President and Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

EXHIBIT 32.2

Certification Pursuant to

18 U.S.C. Section 1350,

As Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Annual Report on Form 10-K of Plum Creek Timber Company, Inc. (the “Company”) for the period ended December 31, 2011, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), David W. Lambert, as Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

Date:	February 24, 2012
By: /s/ DAVID W. LAMBERT
DAVID W. LAMBERT
Senior Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-99.1

Exhibit 99.1

SOUTHERN DIVERSIFIED TIMBER, LLC

Financial Statements

December 31, 2011, 2010 and 2009

(With Independent Auditors' Report Thereon)

Independent Auditors' Report

The Members

Southern Diversified Timber, LLC:

We have audited the accompanying balance sheets of Southern Diversified Timber, LLC (a Delaware limited liability company) (the Company) as of December 31, 2011 and 2010, and the related statements of operations, members' equity, and cash flows for each of the years in the three‑year period ended December 31, 2011. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of Southern Diversified Timber, LLC as of December 31, 2011 and 2010, and the results of their operations and their cash flows for each of the years in the three‑year period ended December 31, 2011, in conformity with U.S. generally accepted accounting principles.

/s/ KPMG LLP

Portland, Oregon

February 21, 2012

SOUTHERN DIVERSIFIED TIMBER, LLC
Balance Sheets
December 31, 2011 and 2010
(Dollar amounts in thousands)
Assets						2011	2010
Current assets:
	Cash and cash equivalents				$	22,387	18,156
	Accounts receivable from related party					967	662
	Accounts receivable					63	11
	Prepaid expenses					187	127
	Related party interest receivable (note 6)					7,379	7,379
			Total current assets			30,983	26,335
Timber, timber lease rights, timberlands, and other, net (note 4)						737,486	749,565
Equipment						716	643
	Less accumulated depreciation					(473)	(420)
			Total equipment, net			243	223
Deferred financing costs, net						49	113
			Total assets		$	768,761	776,236
Liabilities and Members’ Equity
Current liabilities:
	Accrued preferred return to related party (note 7)				$	16,269	16,269
	Other current liabilities					1,856	1,168
	Deferred revenue					1,011	932
			Total current liabilities			19,136	18,369
Revolving line of credit (note 5)						—	—
Commitments and contingencies (note 4)
Member’s temporary equity:
	Member’s capital – TCG Member (Common Interest)					770,772	772,727
Member’s permanent equity:
	Member’s capital – PC Member (Common Interest)					77,077	77,273
	Member’s capital – PC Member (Preferred Interest)					704,700	704,700
	Member’s capital – PC Member (Income Allocable to Preferred
		Interest)				160,549	111,145
	Member’s capital – PC Member (Preferred Return)					(180,473)	(124,978)
	Related party note receivable (note 6)					(783,000)	(783,000)
			Total member’s permanent equity			(21,147)	(14,860)
			Total liabilities, member’s temporary equity,
				and member’s permanent equity	$	768,761	776,236
See accompanying notes to financial statements.

2

SOUTHERN DIVERSIFIED TIMBER, LLC
Statements of Operations
Years ended December 31, 2011, 2010 and 2009
(Dollar amounts in thousands)
					2011	2010	2009
Revenues:
	Stumpage sales to related party			$	11,510	15,488	12,675
	Other revenue				2,500	1,868	1,746
		Total revenues			14,010	17,356	14,421
Operating costs:
	Timber lease expense				643	545	523
	Depreciation, depletion, and amortization				14,607	18,505	17,933
	Selling, general, and administrative expenses				7,101	6,293	5,644
	(Gain) loss on sale of timberlands				1	(11)	—
		Operating loss			(8,342)	(7,976)	(9,679)
Interest expense					—	—	(6)
Interest income					—	24	34
Interest income on related party note
	receivable (note 6)				57,746	57,746	57,746
		Net income before allocation to
			preferred and common interest		49,404	49,794	48,095
Net income allocable to preferred interest (note 7)					(49,404)	(49,794)	(48,095)
		Net income allocable to
			common interest	$	—	—	—
See accompanying notes to financial statements.

3

SOUTHERN DIVERSIFIED TIMBER, LLC
Statements of Members’ Equity
Years ended December 31, 2011, 2010 and 2009
(Dollar amounts in thousands)
					Member’s	Member’s
					permanent	temporary
					equity (note 7)	equity (note 7)
Balance at December 31, 2008				$	(618)	783,000
	Net income (loss) allocable to preferred interest:
		Member’s capital – PC Member (Preferred Interest)			48,095	—
		Member’s capital – PC Member (Preferred Interest Accrued)			(55,609)	—
			Distributions in excess of allocated earnings		(7,514)	—
Balance at December 31, 2009					(8,132)	783,000
	Net income (loss) allocable to preferred interest:
		Member’s capital – PC Member (Preferred Interest)			49,794	—
		Member’s capital – PC Member (Preferred Interest Accrued)			(55,495)	—
		Distribution – PC Member			(1,027)	—
		Distribution – TCG Member			—	(10,273)
			Distributions in excess of allocated earnings		(6,728)	(10,273)
Balance at December 31, 2010					(14,860)	772,727
	Net income (loss) allocable to preferred interest:
		Member’s capital – PC Member (Preferred Interest)			49,404	—
		Member’s capital – PC Member (Preferred Interest Accrued)			(55,495)	—
		Distribution – PC Member			(196)	—
		Distribution – TCG Member			—	(1,955)
			Distributions in excess of allocated earnings		(6,287)	(1,955)
Balance at December 31, 2011				$	(21,147)	770,772
See accompanying notes to financial statements.

4

SOUTHERN DIVERSIFIED TIMBER, LLC
Statements of Cash Flows
Years ended December 31, 2011, 2010 and 2009
(Dollar amounts in thousands)
								2011	2010	2009
Cash flows from operating activities:
	Net income before allocation to preferred
		and common interest					$	49,404	49,794	48,095
	Adjustments to reconcile net income to cash
		provided by operating activities:
			Depreciation, depletion, and amortization					14,607	18,505	17,933
			(Gain) loss on sale of timberlands					1	(11)	—
			Changes in operating accounts:
				Accounts receivable				(357)	455	(265)
				Prepaid expenses				(60)	44	14
				Other current liabilities				688	(239)	513
				Deferred revenue				79	34	97
					Net cash provided by
						operating activities		64,362	68,582	66,387
Cash flows from investing activities:
	Proceeds from timberland sale							2	135	—
	Timber and equipment additions							(2,487)	(2,545)	(4,453)
					Net cash used in investing activities			(2,485)	(2,410)	(4,453)
Cash flows from financing activities:
	Net repayments under revolving line of credit							—	—	(488)
	Cash distribution for preferred return							(55,495)	(55,495)	(53,214)
	Cash distribution – PC Member							(196)	(1,027)	—
	Cash distribution – TCG Member							(1,955)	(10,273)	—
					Net cash used in financing activities			(57,646)	(66,795)	(53,702)
					Net change in cash and
						cash equivalents		4,231	(623)	8,232
Cash and cash equivalents, beginning of year								18,156	18,779	10,547
Cash and cash equivalents, end of year							$	22,387	18,156	18,779
Supplemental cash flow information:
	Cash paid for interest						$	—	—	6
See accompanying notes to financial statements.

5

SOUTHERN DIVERSIFIED TIMBER, LLC

Notes to Financial Statements

December 31, 2011, 2010 and 2009

(Dollar amounts in thousands)

(1) Organization, Nature of Operations, and Basis of Presentation

(a) Organization

Southern Diversified Timber, LLC (SDT or the Company) is a Delaware limited liability company formed on October 1, 2008. SDT owns 454,000 acres of timberlands throughout Oklahoma, Arkansas, Georgia, North Carolina, South Carolina, and Mississippi. SDT's members are Plum Creek Timber Operations I, LLC (PC Member) and TCG Member, LLC (TCG Member). SDT is managed by TCG/Southern Diversified Manager, LLC, which is owned by The Campbell Group, LLC (TCG).

TCG Member is a Delaware limited liability company formed on October 1, 2008 for the principal purpose of investing in SDT.

PC Member is a Delaware limited liability company and is owned 99% by Plum Creek Timberlands, L.P., and 1% by Plum Creek Timber Operations II, Inc., both of which are owned by Plum Creek Timber Company Inc., a publicly traded REIT.

TCG Member contributed $783,000 in cash to SDT in exchange for a 90.91% Common Interest. PC Member contributed timber, timber lease rights, and timberlands to SDT valued at $783,000 in exchange for a 9.09% Common Interest and a Preferred Interest with a Priority Amount of $704,700 and a Base Preferred Return of 7.875% per annum on the outstanding Priority Amount. PC Member's contribution was recorded at fair value.

(b) Nature of Operations

SDT sells all of its timber pursuant to a Timber Harvest Agreement (the Harvest Agreement) with Southern Diversified LogCo, LLC (LogCo), a Delaware limited liability company. LogCo sells the harvested timber on the open market. TCG is the sole member of LogCo.

(c) Basis of Presentation

The financial statements of SDT as of December 31, 2011 and 2010 and for each of the years in the three-year period ended December 31, 2011 include only the accounts of SDT.

The Company has performed a review for subsequent events through February 21, 2012, which is the date the financial statements were issued.

(2) Summary of Significant Accounting Policies

(a) Use of Estimates

The preparation of financial statements in accordance with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include depletion.

6

SOUTHERN DIVERSIFIED TIMBER, LLC

Notes to Financial Statements

December 31, 2011, 2010 and 2009

(Dollar amounts in thousands)

(b) Revenue Recognition

Stumpage Sales

Title and risk of loss from stumpage sales transfer to the buyer as the trees are cut. Revenue is recognized as timber is harvested. The buyer is typically responsible for all logging and hauling costs. The Company, in order to maintain capital gain treatment under Internal Revenue Code Section 631(b), and avoid unrelated business taxable income for certain partners, retains an economic interest in the timber until it is harvested.

All accounts receivable are trade receivables that have been billed. There was no allowance for doubtful accounts at December 31, 2011 and 2010.

Hunting Lease Income

The Company receives payment for hunting leases in advance. The revenue is recognized ratably over the term of the hunting leases, which is typically one year. The Company recognized $1,880, $1,811, and $1,712, respectively, of hunting lease income during the years ended December 31, 2011, 2010, and 2009, which is included in other revenue in the accompanying statements of operations. The Company had $1,011 and $932 of deferred revenue related to hunting leases at December 31, 2011 and 2010, respectively.

(c) Concentration of Credit Risk

The Company is subject to credit risk through cash balances, money market investments, accounts receivable, and notes receivable. The Company restricts investment of cash balances to high credit quality financial institutions. At times, such investments may be in excess of the FDIC insurance limit.

For the years ended December 31, 2011, 2010, and 2009, LogCo, a related party of the Company, accounted for 82%, 89%, and 88% of revenue, respectively. As of December 31, 2011 and 2010, LogCo accounted for 94% and 92% of accounts receivable outstanding, respectively.

As of December 31, 2011 and 2010, the Company had an outstanding note receivable of $783,000, plus accrued interest, which is owed by Plum Creek Ventures I, LLC, a related party of the Company.

(d) Timber, Timber Lease Rights, Timberlands, and Other

Timber, timber lease rights, and logging roads are stated at cost less depletion for timber previously harvested and accumulated amortization related to lease rights and roads. Amortization of logging roads and lease rights, and depletion of timber harvested are determined based on the volume of timber harvested in relation to the amount of estimated recoverable timber. The Company estimates its timber inventory using statistical information and data obtained from physical measurements, site maps, photo‑types, and other information‑gathering techniques. These estimates are updated annually and may result in adjustments of timber volumes and depletion rates, which are recognized prospectively. Changes in these estimates have no impact on the reported cash flow.

Hunting leases are stated at acquisition cost and are a nonamortizable intangible asset.

(e) Equipment

Equipment, including additions and improvements that add to productive capacity or extend useful life, are recorded at cost. Maintenance and repairs are expensed as incurred. Upon retirement or disposal of

7

SOUTHERN DIVERSIFIED TIMBER, LLC

Notes to Financial Statements

December 31, 2011, 2010 and 2009

(Dollar amounts in thousands)

assets, the cost and related accumulated depreciation are removed from their respective accounts and any gain or loss is reflected in earnings.

Depreciation is calculated on equipment for financial reporting purposes using the straight‑line method and is based on an estimated useful life of three years. Depreciation expense for the years ended December 31, 2011, 2010, and 2009 was $156, $207, and $179, respectively.

(f) Impairment of Long‑Lived Assets

The Company reviews its long‑lived assets, primarily timber, timber lease rights, and timberlands, for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable. The Company compares the carrying value of the assets with the asset's expected future undiscounted cash flows. If the carrying value of the assets exceeds the expected future cash flows, impairment exists, which is measured by the excess of the carrying value over the fair value of the assets. The Company recognized no impairment losses for the years ended December 31, 2011, 2010, and 2009.

(g) Deferred Financing Costs

Deferred financing costs include fees and costs incurred to obtain the revolving line of credit and are being amortized over the term of the line of credit on a straight‑line basis, which approximates the effective interest method. Amortization of deferred financing costs is included in depreciation, depletion, and amortization expense in the accompanying statements of operations.

(h) Fair Value Measurements

Accounting Standards Codification Topic 820, FairValue Measurements and Disclosures (ASC Topic 820) defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC Topic 820 also establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:

• Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

• Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.

• Level 3 inputs are unobservable inputs for the asset or liability.

The Company does not have any assets or liabilities that are measured at fair value.

The carrying values of all current assets and current liabilities at December 31, 2011 approximate their fair values due to their short maturity, less than one year.

(i) Income Taxes

SDT is a limited liability company and accordingly is not liable for federal, state, or local income taxes since income or loss is reported on the separate tax returns of TCG Member and PC Member.

8

SOUTHERN DIVERSIFIED TIMBER, LLC

Notes to Financial Statements

December 31, 2011, 2010 and 2009

(Dollar amounts in thousands)

(j) Timber Harvest Agreement

The Harvest Agreement permits LogCo, a related party, to purchase all of the SDT's yearly harvest offering. LogCo purchased $11,510, $15,488, and $12,675 (1,121,328 tons, 1,195,996 tons, and 1,222,057 tons) of timber from SDT under the Harvest Agreement for the years ended December 31, 2011, 2010, and 2009, respectively. The Harvest Agreement expires on September 30, 2018 but can be terminated upon certain defaults by SDT or LogCo.

(3) Property Management Agreement

On October 1, 2008, the Company entered into the Property Management Agreement (the Property Management Agreement) with TCG whereby TCG and its affiliates provide all operational and administrative services for the Company. Services provided by TCG include all forest management activities, management of the Harvest Agreement, and accounting services for all receipts and expenses of the Company. Under the terms of the Property Management Agreement, the Company reimburses TCG for all reasonable costs and expenses incurred in connection with the performance of services under the Property Management Agreement. The total amount of reimbursements paid to TCG by the Company for the years ended December 31, 2011, 2010, and 2009, was $636, $632, and $669, respectively.

(4) Timber, Timber Lease Rights, Timberlands, and Other

On October 1, 2008, TCG Member and PC Member formed SDT. PC Member contributed 454,000 acres of timberland in Oklahoma, Arkansas, Georgia, North Carolina, South Carolina, and Mississippi. As of December 31, 2011 and 2010, timber, timber lease rights, timberlands, and other consisted of approximately 454,000 acres as follows:

				2011		2010
Timber			$	407,813		405,832
Timber lease rights				26,638		26,638
Timberlands				323,025		322,698
Hunting leases				34,800		34,800
Accumulated depletion and amortization				(54,790	)	(40,403	)
	Timber, timber lease rights, timberlands,
		and other, net	$	737,486		749,565

Depletion expense for the years ended December 31, 2011, 2010, and 2009 was $14,387, $18,233, and $17,689, respectively.

Timber Lease Rights

Approximately 25,000 of the 454,000 acres of timberlands acquired are under timber leases with individual landowners. These leases give the Company the right to grow and harvest timber on the third party owned lands. The Company has several noncancelable operating leases that generally expire between 2015 and 2031. The lease rates are substantially below current market, and therefore, the value of these favorable lease rates was capitalized as part of the original purchase price.

Minimum lease payments under operating leases are recognized as incurred.

9

SOUTHERN DIVERSIFIED TIMBER, LLC

Notes to Financial Statements

December 31, 2011, 2010 and 2009

(Dollar amounts in thousands)

Future minimum lease payments under noncancelable operating leases (with initial or remaining lease terms in excess of one year) are as follows:

2012	$	485
2013	485
2014	485
2015	291
2016	273

Lease expense related to the timber leases was $643, $545, and $523, for the years ended December 31, 2011, 2010, and 2009, respectively.

(5) Revolving Line of Credit

On October 8, 2008, the Company entered into a $15,000 revolving line of credit agreement with American AgCredit, PCA. At December 31, 2011 and 2010, the Company had no outstanding borrowings. The rate of interest is the Prime rate plus 0.5% per annum, with the option of LIBOR plus 1.75% per annum in the alternative, which is elected every quarter. The interest rate for the years ended December 31, 2011 and 2010 ranged from approximately 3% to 4%. Interest is payable on March 31, June 30, September 30, and December 31 each year. The loan requires no principal payments until maturity on October 8, 2012. Proceeds must be used for working capital and other general corporate purposes. The Company recognized $0, $0, and $6 of interest expense for the years ended December 31, 2011, 2010, and 2009, respectively.

The revolving line of credit agreement contains various restrictive covenants that limit the incurrence of additional indebtedness and require the Company to maintain a minimum level of consolidated net worth. The revolving line of credit is collateralized by the assets of the Company.

(6) Related Party Note Receivable

The Company made a loan in the principal amount of $783,000 to Plum Creek Ventures I, LLC (the Borrower), which is a separate limited liability company and is not owned directly or indirectly by PC Member. The maturity date of the loan is October 1, 2018, with an optional two-year extension. The note is guaranteed by Plum Creek Timber Company, Inc. The loan is secured by the Borrower's interest in Plum Creek Timberlands, L.P. The loan bears interest at a fixed rate of 7.375% per annum, and interest is payable on February 15, May 15, August 15, and November 15 of each year. For the years ended December 31, 2011, 2010, and 2009, the Company recorded interest income on the related party note receivable of $57,746 each year. As of December 31, 2011 and 2010, the Company has accrued interest income of $7,379, which has been reflected as related party interest receivable on the accompanying balance sheets.

(7) Members' Equity

TCG Member and PC Member are the members of SDT. TCG Member contributed $783,000 of cash to SDT for a 90.91% Common Interest in SDT. PC Member contributed timber, timber lease rights, and timberlands valued at $783,000 in exchange for a 9.09% Common Interest and a Preferred Interest with a Priority Amount of $704,700 and with a Base Preferred Return of 7.875% per annum on the outstanding Priority Amount. Preferred dividends are due on March 15th and September 15th of each year. For any preferred dividends that become past due, the Base Preferred Return will be increased by 3.000% per annum until paid. As of December 31, 2011

10

SOUTHERN DIVERSIFIED TIMBER, LLC

Notes to Financial Statements

December 31, 2011, 2010 and 2009

(Dollar amounts in thousands)

and 2010, the Company had accrued a preferred dividend payable to PC Member of $16,269 on the accompanying balance sheets.

No distributions can be made on the common interests until all current period and prior period Preferred Returns have been paid. The earnings of the Company are first allocated to the preferred interest to the extent of the Preferred Return and any remaining earnings are then allocated pro rata among the common interests.

PC Member retains certain protective rights that require its consent before the Company can take certain actions. For example, without PC Member's consent and subject to certain exceptions, the Company generally cannot sell properties, incur indebtedness, file for bankruptcy, or enter into contracts with affiliates, which are not arm's length.

SDT can only be liquidated with the consent of both PC Member and TCG Member. However, upon the ninth anniversary of SDT, PC Member has the right for a six‑month period to cause SDT to redeem the common interest of TCG Member. Additionally, TCG Member has a similar redemption right after the seventh anniversary for a six‑month period. The redemption value of the Member's Interest being redeemed would be based on such Member's capital account balance as adjusted per the LLC Agreement of SDT. The Common Interest held by TCG is classified as temporary equity on the accompanying balance sheets due to these redemption rights.

11

XML

REIT Disclosures (Tables) (PLUM CREEK TIMBER CO INC [Member])

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Historical Tax Character of Distributions to Shareholders

The table below summarizes the historical tax character of distributions to Plum Creek shareholders for the years ended December 31 (amounts per share):

	2011		2010		2009
Capital Gain Dividend	$	1.68	$	1.68	$	1.68
Non-Taxable Return of Capital	—		—		—
Total Distributions	$	1.68	$	1.68	$	1.68

XML

Related Party Transactions Related Party Transactions (Interest Payable) (Details) (PLUM CREEK TIMBER CO INC [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Related Party Interest Payable Current	$ 7	$ 7

XML

Earnings Per Share (Schedule of Basic and Diluted Earnings Per Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2010		Sep. 30, 2010		Jun. 30, 2010		Mar. 31, 2010		Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income from Continuing Operations																	$ 193	$ 202	$ 236
Gain on Sale of Properties, net of tax																	0	11	0
Net Income Available to Common Stockholders																	193	213	236
Denominator for Basic Earnings per Share																	161.7	162.1	163.3
Effect of Dilutive Securities - Stock Options																	0.2	0.1	0.1
Effect of Dilutive Securities - Restricted Stock, Restricted Stock Units and Value Management Plan																	0.1	0.1	0
Denominator for Diluted Earnings per Share - Adjusted for Dilutive Securities																	162.0	162.3	163.4
Income from Continuing Operations - Basic																	$ 1.19	$ 1.25	$ 1.45
Gain on Sale of Properties, net of tax - Basic																	$ 0.00	$ 0.07	$ 0.00
Net Income per Share-Basic																	$ 1.19	$ 1.31	$ 1.45
Income from Continuing Operations - Diluted																	$ 1.19	$ 1.24	$ 1.44
Gain on Sale of Properties, net of tax - Diluted																	$ 0.00	$ 0.07	$ 0.00
Net Income per Share-Diluted																	$ 1.19	$ 1.31	$ 1.44
PLUM CREEK TIMBER CO INC [Member]
Income from Continuing Operations									59	[1]	32		35		76		193	202	236
Gain on Sale of Properties, net of tax															11		0	11	0
Net Income Available to Common Stockholders	$ 61		$ 50		$ 44		$ 38		$ 59	[1]	$ 32		$ 35		$ 87	[2]	$ 193	$ 213	$ 236
Denominator for Basic Earnings per Share																	161.7	162.1	163.3
Denominator for Diluted Earnings per Share - Adjusted for Dilutive Securities																	162.0	162.3	163.4
Income from Continuing Operations - Basic																	$ 1.19	$ 1.25	$ 1.45
Net Income per Share-Basic	$ 0.38	[3]	$ 0.31	[3]	$ 0.27	[3]	$ 0.23	[3]	$ 0.37	[1],[3]	$ 0.20	[3]	$ 0.21	[3]	$ 0.54	[2],[3]	$ 1.19	$ 1.31	$ 1.45
Income from Continuing Operations - Diluted																	$ 1.19	$ 1.24	$ 1.44
Net Income per Share-Diluted	$ 0.38	[3]	$ 0.31	[3]	$ 0.27	[3]	$ 0.23	[3]	$ 0.37	[1],[3]	$ 0.20	[3]	$ 0.21	[3]	$ 0.54	[2],[3]	$ 1.19	$ 1.31	$ 1.44

[1] During the fourth quarter of 2010, the company paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

[2] The company’s 2010 first quarter net income includes an $11 million ($0.07 per diluted share) Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

[3] Net income per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly net income per share may not equal the total computed for the year.

XML

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Future Minimum Operating Lease Payments and Obligations

The following summarizes the future minimum operating lease payments and obligations in connection with leasing timberlands at December 31, 2011 (in millions): 

	Operating Leases		Timber Obligations
2012	$	3	$	1
2013	3		1
2014	2		—
2015	2		—
2016	1		—
Thereafter	1		4
Total	$	12	$	6

PLUM CREEK TIMBERLANDS L P [Member]

Future Minimum Operating Lease Payments and Obligations

The following summarizes the future minimum operating lease payments and obligations in connection with leasing timberlands at December 31, 2011 (in millions): 

	Operating Leases		Timber Obligations
2012	$	3	$	1
2013	3		1
2014	2		—
2015	2		—
2016	1		—
Thereafter	1		4
Total	$	12	$	6

XML

Borrowings (Schedule of Debt Principal Payments and Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended										3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2009 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2009 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Public Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Public Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Public Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Public Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Private Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Private Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Private Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Private Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Private Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Private Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Term Credit Agreement [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Term Credit Agreement [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Term Credit Agreement [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Term Credit Agreement [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Senior Notes Maturing Fourth Quarter2011 [Member] Private Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Senior Notes Maturing Fourth Quarter2011 [Member] Private Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]
Retired Debt	$ 95	$ 519		$ 95	$ 519		$ 0	$ 0	$ 0	$ 0	$ 269	$ 269	$ 95	$ 269	$ 269	$ 95	$ 0	$ 250	$ 0	$ 250	$ 213	$ 213
Loss on Extinguishment of Debt	$ 0	$ 13	$ 2	$ 0	$ 13	$ 2					$ (13)	$ (13)		$ (13)	$ (13)

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Earnings Per Share (Schedule of Antidilutive Options) (Details) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Earnings Per Share [Abstract]
Number of Options	1.5	2.0	2.2
Range of Exercise Prices	$35.22 to $43.23	$33.75 to $43.23	$30.70 to $43.23
Expiration on or before	February 2021	February 2020	February 2019

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Fair Value Measurements (Level 3 Assets and Liabilities Reported in the Company's Financial Statements at Fair Value, Measured on a Nonrecurring Basis) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Timberlands Held for Sale (carrying value)	$ 2	$ 7	$ 33
Timberlands Held for Sale (fair value after impairment recognition)	2
Impairment Loss on Non Strategic Timberlands	1
Total Net Gain (Loss)	1
Timberlands held for sale before impairment recognition	3
PLUM CREEK TIMBERLANDS L P [Member]
Timberlands Held for Sale (carrying value)	2	7	33
Timberlands Held for Sale (fair value after impairment recognition)	2
Impairment Loss on Non Strategic Timberlands	1
Total Net Gain (Loss)	1
Timberlands held for sale before impairment recognition	$ 3

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Commitments and Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Term of Urea Purchase Agreement	15 years
Unconditional Purchase Obligation per Year Payment	$ 15
Unconditional Purchase Obligations Aggregate	230
Operating lease expense	3	4	5
PLUM CREEK TIMBERLANDS L P [Member]
Term of Urea Purchase Agreement	15 years
Unconditional Purchase Obligation per Year Payment	15
Unconditional Purchase Obligations Aggregate	230
Operating lease expense	3	4	5
Operating Lease Expense [Member] | PLUM CREEK TIMBER CO INC [Member]
2012	3
2013	3
2014	2
2015	2
2016	1
Thereafter	1
Total	12
Operating Lease Expense [Member] | PLUM CREEK TIMBERLANDS L P [Member]
2012	3
2013	3
2014	2
2015	2
2016	1
Thereafter	1
Total	12
Timber Obligations [Member] | PLUM CREEK TIMBER CO INC [Member]
2012	1
2013	1
2014	0
2015	0
2016	0
Thereafter	4
Total	6
Timber Obligations [Member] | PLUM CREEK TIMBERLANDS L P [Member]
2012	1
2013	1
2014	0
2015	0
2016	0
Thereafter	4
Total	$ 6

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Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Presented below is a summary of Plum Creek’s stock option Plan activity for the year ended December 31, 2011:

	Shares Subject to Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value (Millions)
Balance at January 1, 2011	3,291,305		$	35.59
Granted	579,350		41.55
Exercised/Surrendered	(327,280	)	30.52
Cancelled/Forfeited	(2,450	)	38.33
Outstanding, December 31, 2011	3,540,925		$	37.03	5.9	$	6
Vested or Expected to Vest, December 31, 2011	3,246,281		$	36.90	5.8	$	6
Exercisable, December 31, 2011	2,164,465		$	36.23	4.5	$	5

Schedule of Cash Proceeds Received from Share-based Payment Awards [Table Text Block]

The table below presents stock activity related to stock options exercised during the years ended December 31 (in millions):

	2011		2010		2009
Proceeds from Stock Options Exercised	$	10	$	2	$	—
Intrinsic Value of Stock Options Exercised	$	4	$	1	$	—
Tax Benefit Related to Stock Options Exercised	$	1	$	—	$	—

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The weighted-average measurement date fair values of stock option awards granted were computed using the Black-Scholes-Merton option valuation model with the following assumptions for the years ended December 31:

	2011			2010			2009
Expected Term (years)	6			6			6
Risk-Free Interest Rate	2.7		%	2.7		%	2.0		%
Volatility	40.6		%	40.3		%	35.5		%
Dividend Yield	4.0		%	4.8		%	5.0		%
Weighted-Average Measurement Date Fair Value	$	11.60		$	9.00		$	7.02

Restricted Stock Awards Activity

Restricted stock awards activity was as follows for the year ended December 31, 2011:

	Shares		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	—		$	—
Granted	16,000		$	41.99
Vested	(16,000	)	$	41.99
Forfeited	—		$	—
Balance at December 31, 2011	—		$	—

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

Restricted stock unit activity was as follows for the year ended December 31, 2011:

	Units		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	247,866		$	37.09
Granted	103,760		$	41.45
Vested	(107,386	)	$	38.66
Forfeited	(440	)	$	38.34
Balance at December 31, 2011	243,800		$	38.25

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

Value management awards activity was as follows for the year ended December 31, 2011:

	Units
Balance at January 1, 2011	211,080
Grants	80,730
Vested	(64,545	)
Forfeitures	(400	)
Balance at December 31, 2011	226,865

Summary of Outstanding Value Management Awards

Presented below is a summary of outstanding value management awards and related fair values, unrecognized compensation expense and maximum value as of December 31, 2011 (dollars in millions):

Performance Period	Outstanding Units	Fair Value (A)		Unrecognized Compensation Expense		Maximum Award Value (B)
2009 to 2011	68,945	$	0.0	$	0.0	$	13.8
2010 to 2012	77,340	$	3.0	$	0.9	$	15.5
2011 to 2013	80,580	$	6.4	$	3.6	$	16.1

^(A)  The estimated fair value includes unrecognized compensation expense.

^(B)  Maximum award value is based on a unit value of $200.

Summary of Earned and Paid Value Management Awards For Three Year Periods

Presented below is a summary of earned and paid (primarily in cash) value management awards for the following three-year performance periods:

Performance Period	Payout Value per Unit		Total Payout (millions)		Payment Date
2009 to 2011	$	0	$	0.0	Not Earned
2008 to 2010	$	0	$	0.0	Not Earned
2007 to 2009	$	200	$	11.1	1st Quarter 2010
2006 to 2008	$	200	$	10.6	1st Quarter 2009

PLUM CREEK TIMBERLANDS L P [Member]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Presented below is a summary of Plum Creek’s stock option Plan activity for the year ended December 31, 2011:

	Shares Subject to Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value (Millions)
Balance at January 1, 2011	3,291,305		$	35.59
Granted	579,350		41.55
Exercised/Surrendered	(327,280	)	30.52
Cancelled/Forfeited	(2,450	)	38.33
Outstanding, December 31, 2011	3,540,925		$	37.03	5.9	$	6
Vested or Expected to Vest, December 31, 2011	3,246,281		$	36.90	5.8	$	6
Exercisable, December 31, 2011	2,164,465		$	36.23	4.5	$	5

Schedule of Cash Proceeds Received from Share-based Payment Awards [Table Text Block]

The table below presents stock activity related to stock options exercised during the years ended December 31 (in millions): 

	2011		2010		2009
Proceeds from Stock Options Exercised	$	10	$	2	$	—
Intrinsic Value of Stock Options Exercised	$	4	$	1	$	—
Tax Benefit Related to Stock Options Exercised	$	1	$	—	$	—

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The weighted-average measurement date fair values of stock option awards granted were computed using the Black-Scholes-Merton option valuation model with the following assumptions for the years ended December 31: 

	2011			2010			2009
Expected Term (years)	6			6			6
Risk-Free Interest Rate	2.7		%	2.7		%	2.0		%
Volatility	40.6		%	40.3		%	35.5		%
Dividend Yield	4.0		%	4.8		%	5.0		%
Weighted-Average Measurement Date Fair Value	$	11.60		$	9.00		$	7.02

Restricted Stock Awards Activity

Restricted stock awards activity was as follows for the year ended December 31, 2011:

	Shares		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	—		$	—
Granted	16,000		$	41.99
Vested	(16,000	)	$	41.99
Forfeited	—		$	—
Balance at December 31, 2011	—		$	—

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

Restricted stock unit activity was as follows for the year ended December 31, 2011:

	Units		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	247,866		$	37.09
Granted	103,760		$	41.45
Vested	(107,386	)	$	38.66
Forfeited	(440	)	$	38.34
Balance at December 31, 2011	243,800		$	38.25

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

Value management awards activity was as follows for the year ended December 31, 2011:

	Units
Balance at January 1, 2011	211,080
Grants	80,730
Vested	(64,545	)
Forfeitures	(400	)
Balance at December 31, 2011	226,865

Summary of Outstanding Value Management Awards

Presented below is a summary of outstanding value management awards and related fair values, unrecognized compensation expense and maximum value as of December 31, 2011 (dollars in millions): 

Performance Period	Outstanding Units	Fair Value (A)		Unrecognized Compensation Expense		Maximum Award Value (B)
2009 to 2011	68,945	$	0.0	$	0.0	$	13.8
2010 to 2012	77,340	$	3.0	$	0.9	$	15.5
2011 to 2013	80,580	$	6.4	$	3.6	$	16.1

^(A)  The estimated fair value includes unrecognized compensation expense.

^(B)  Maximum award value is based on a unit value of $200.

Summary of Earned and Paid Value Management Awards For Three Year Periods

Presented below is a summary of earned and paid (primarily in cash) value management awards for the following three-year performance periods: 

Performance Period	Payout Value per Unit		Total Payout (millions)		Payment Date
2009 to 2011	$	0	$	0.0	Not Earned
2008 to 2010	$	0	$	0.0	Not Earned
2007 to 2009	$	200	$	11.1	1st Quarter 2010
2006 to 2008	$	200	$	10.6	1st Quarter 2009

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Accounting Policies Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

The following table sets forth the annual revenues from the company’s largest customer as a percentage of total annual revenues for the years ended December 31:

	2011		2010		2009
Customer Revenue as a Percentage of Total Revenues	7	%	7	%	7	%

If adverse market conditions for wood products were to continue or worsen, the loss of this customer could have a significant effect on the company’s results of operations

Notes Receivable as a Percentage of Total Revenues [Table Text Block]

These sales ("Credit Sales") as a percentage of total real estate sales were as follows for the years ended December 31:

	2011		2010		2009
Credit Sales as a Percentage of Total Real Estate Sales	0	%	3	%	3	%

Depreciation Expense Summary [Table Text Block]

Depreciation expense, excluding impairment charges, was as follows for the years ended December 31 (in millions):

	2011		2010		2009
Depreciation Expense	$	20	$	19	$	20

PLUM CREEK TIMBERLANDS L P [Member]

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

The following table sets forth the annual revenues from the Operating Partnership’s largest customer as a percentage of total annual revenues for the years ended December 31:

	2011		2010		2009
Customer Revenue as a Percentage of Total Revenues	7	%	7	%	7	%

If adverse market conditions for wood products were to continue or worsen, the loss of this customer could have a significant effect on the Operating Partnership’s results of operations

Notes Receivable as a Percentage of Total Revenues [Table Text Block]

These sales ("Credit Sales") as a percentage of total real estate sales were as follows for the years ended December 31:

	2011		2010		2009
Credit Sales as a Percentage of Total Real Estate Sales	0	%	3	%	3	%

Depreciation Expense Summary [Table Text Block]

Depreciation expense, excluding impairment charges, was as follows for the years ended December 31 (in millions):

	2011		2010		2009
Depreciation Expense	$	20	$	19	$	20

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Stockholders' Equity (Narratives) (Details) (PLUM CREEK TIMBER CO INC [Member], USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Common Stock Shares Issued and Outstanding	161,300,000	161,600,000
Shares of Common Stock	300,634,566	300,600,000
Common Stock, par value	$ 0.01	$ 0.01
Excess Stock, Shares Authorized	150,000,001
Excess Stock, par value	$ 0.01
Preferred Stock, Shares Authorized	75,000,000	75,000,000
Preferred Stock, par value	$ 0.01	$ 0.01
Remaining Authorized Amount Available for Share Repurchases	$ 175

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Unaudited Selected Quarterly Financial Data (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2010		Sep. 30, 2010		Jun. 30, 2010		Mar. 31, 2010		Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income from Continuing Operations																	$ 193	$ 202	$ 236
Net Income																	193	213	236
Net Income per Share-Basic																	$ 1.19	$ 1.31	$ 1.45
Net Income per Share-Diluted																	$ 1.19	$ 1.31	$ 1.44
PLUM CREEK TIMBER CO INC [Member]
Revenues	315		293		284		275		356		259		258		317		1,167	1,190	1,294
Gross Profit	112		93		88		85		120		71		73		119
Operating Income (Loss)	83		69		63		60		95		51		56		95		275	297	299
Income from Continuing Operations									59	[1]	32		35		76		193	202	236
Net Income	61		50		44		38		59	[1]	32		35		87	[2]	193	213	236
Net Income per Share-Basic	$ 0.38	[3]	$ 0.31	[3]	$ 0.27	[3]	$ 0.23	[3]	$ 0.37	[1],[3]	$ 0.20	[3]	$ 0.21	[3]	$ 0.54	[2],[3]	$ 1.19	$ 1.31	$ 1.45
Net Income per Share-Diluted	$ 0.38	[3]	$ 0.31	[3]	$ 0.27	[3]	$ 0.23	[3]	$ 0.37	[1],[3]	$ 0.20	[3]	$ 0.21	[3]	$ 0.54	[2],[3]	$ 1.19	$ 1.31	$ 1.44
PLUM CREEK TIMBERLANDS L P [Member]
Revenues	315		293		284		275		356		259		258		317		1,167	1,190	1,294
Gross Profit	112		93		88		85		120		71		73		119
Operating Income (Loss)	83		69		63		60		95		51		56		95		275	297	299
Income from Continuing Operations									59	[4]	32		35		76		251	260	294
Net Income	$ 61		$ 50		$ 44		$ 38		$ 59	[4]	$ 32		$ 35		$ 87	[5]	$ 193	$ 213	$ 236

[1] During the fourth quarter of 2010, the company paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

[2] The company’s 2010 first quarter net income includes an $11 million ($0.07 per diluted share) Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

[3] Net income per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly net income per share may not equal the total computed for the year.

[4] During the fourth quarter of 2010, the Operating Partnership paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

[5] The Operating Partnership’s 2010 first quarter net income includes an $11 million Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

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Restricted Net Assets (Condensed Unconsolidated Balance Sheet Data) (Details) (PLUM CREEK TIMBER CO INC [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Assets
Total Assets	$ 4,259	$ 4,251
Liabilities
Total Liabilities	2,996	2,877
Commitments and Contingencies
Stockholders’ Equity
Common Stock	2	2
Additional Paid-In Capital	2,261	2,243
Retained Earnings (Accumulated Deficit) and Other Equity	(28)	51
Treasury Stock, at cost	937	911
Accumulated Other Comprehensive Income (Loss)	(35)	(11)
Total Stockholders' Equity	1,263	1,374	1,466	1,572
Total Liabilities and Equity	4,259	4,251
Parent [Member]
Assets
Investment in Consolidated Subsidiaries	1,263	1,374
Total Assets	1,263	1,374
Liabilities
Total Liabilities	0	0
Stockholders’ Equity
Common Stock	2	2
Additional Paid-In Capital	2,261	2,243
Retained Earnings (Accumulated Deficit) and Other Equity	(28)	51
Treasury Stock, at cost	(937)	(911)
Accumulated Other Comprehensive Income (Loss)	(35)	(11)
Total Stockholders' Equity	1,263	1,374
Total Liabilities and Equity	$ 1,263	$ 1,374

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Employee Pension and Retirement Plans (Components of Pension Cost Recognized in Net Income) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Service Cost	$ 6	$ 6	$ 7
Interest Cost	8	7	8
Expected Return on Plan Assets	(7)	(7)	(8)
Recognized Actuarial Loss	2	2	2
Settlement Loss	0	0	5
Total Pension Cost	9	8	14
PLUM CREEK TIMBERLANDS L P [Member]
Service Cost	6	6	7
Interest Cost	8	7	8
Expected Return on Plan Assets	(7)	(7)	(8)
Recognized Actuarial Loss	2	2	2
Settlement Loss	0	0	5
Total Pension Cost	$ 9	$ 8	$ 14

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Timber and Timberlands (Timber and Timberlands and Impairment Losses Tables) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Timber and Logging Roads, net	$ 2,232	$ 2,261
Timber Deed	5	0
Timberlands	1,140	1,144
Timber and Timberlands, net	3,377	3,405
Impairment Losses	1	1	3
Book Basis Of Property	7	2	33
PLUM CREEK TIMBERLANDS L P [Member]
Timber and Logging Roads, net	2,232	2,261
Timber Deed	5	0
Timberlands	1,140	1,144
Timber and Timberlands, net	3,377	3,405
Impairment Losses	1	1	3
Book Basis Of Property	$ 7	$ 2	$ 33

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Related Party Transactions (Equity Earnings and Distribution) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Equity Earnings from Timberland Venture	$ 56	$ 57	$ 55
Distributions from Timberland Venture	56	57	53
PLUM CREEK TIMBERLANDS L P [Member]
Equity Earnings from Timberland Venture	56	57	55
Distributions from Timberland Venture	$ 56	$ 57	$ 53

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Fair Value Measurements (Level 1 Assets Reported in the Company's Financial Statements at Fair Value, Measured on a Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009	Dec. 31, 2008
PLUM CREEK TIMBER CO INC [Member]
Cash and Cash Equivalents	$ 254		$ 252		$ 299	$ 369
Domestic Portion of Mutual Funds (percentage)	45.00%
International Portion of Mutual Funds (percentage)	25.00%
Debt Securities Portion of Mutual Funds (percentage)	30.00%
PLUM CREEK TIMBERLANDS L P [Member]
Cash and Cash Equivalents	254		252		299	369
Domestic Portion of Mutual Funds (percentage)	45.00%
International Portion of Mutual Funds (percentage)	25.00%
Debt Securities Portion of Mutual Funds (percentage)	30.00%
Fair Value, Measurements, Recurring [Member] | PLUM CREEK TIMBER CO INC [Member]
Cash Equivalents	253	[1]	249	[1]
Available-for-Sale Securities	31	[2]	30	[2]
Trading Securities	5	[2]	5	[2]
Total	289		284
Fair Value, Measurements, Recurring [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Cash Equivalents	253	[1]	249	[1]
Available-for-Sale Securities	31	[2]	30	[2]
Trading Securities	5	[2]	5	[2]
Total	289		284
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | PLUM CREEK TIMBER CO INC [Member]
Cash Equivalents	253	[1]	249	[1]
Available-for-Sale Securities	31	[2]	30	[2]
Trading Securities	5	[2]	5	[2]
Investments, Fair Value Disclosure	289		284
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Cash Equivalents	253	[1]	249	[1]
Available-for-Sale Securities	31	[2]	30	[2]
Trading Securities	5	[2]	5	[2]
Investments, Fair Value Disclosure	$ 289		$ 284

[1] Consists of several money market funds and is included in the $254 million and $252 million of Cash and Cash Equivalents in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010, respectively.

[2] Consists of several mutual funds and is included in Investment in Grantor Trusts in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010. At December 31, 2011, investments in these mutual funds were approximately 45% in domestic (U.S.) equities, 25% in international equities and 30% in debt securities.

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Employee Pension and Retirement Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 Year H	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	$ 4
Year of service	1
Hours of service, minimum	1,000
Years of service, vesting	3
Contributed to the qualified pension plan	3	4
Contributed to the non-qualified pension plan		1
Expected contributions to the qualified pension plan, minimum range	3
Expected contributions to the qualified pension plan, maximum range	7
Expected contributions to the non-qualified pension plan, minimum range	0
Expected contributions to the non-qualified pension plan, maximum range	2
Settlement Loss	0	0	5
Net Actuarial Loss (Gain)	53	24
Expected long-term rate of return on plan assets	7.50%	7.75%	7.75%
Percentage of equity portfolio that can be invested in a single company	5.00%
Percentage of fixed income portfolio that can be invested in a single issuer	10.00%
Employer match on employee contributions, maximum percentage	6.00%
Employer contribution rates, minimum (percentage)	35.00%
Employer contribution rates, maximum (percentage)	100.00%
Defined contribution plan employer matching contribution percent	100.00%	100.00%	100.00%
Thrift and profit sharing plan expenses	4	4	4
PLUM CREEK TIMBERLANDS L P [Member]
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	4
Year of service	1
Hours of service, minimum	1,000
Years of service, vesting	3
Contributed to the qualified pension plan	3	4
Contributed to the non-qualified pension plan		1
Expected contributions to the qualified pension plan, minimum range	3
Expected contributions to the qualified pension plan, maximum range	7
Expected contributions to the non-qualified pension plan, minimum range	0
Expected contributions to the non-qualified pension plan, maximum range	2
Settlement Loss	0	0	5
Net Actuarial Loss (Gain)	53	24
Expected long-term rate of return on plan assets	7.50%	7.75%	7.75%
Percentage of equity portfolio that can be invested in a single company	5.00%
Percentage of fixed income portfolio that can be invested in a single issuer	10.00%
Employer match on employee contributions, maximum percentage	6.00%
Employer contribution rates, minimum (percentage)	35.00%
Employer contribution rates, maximum (percentage)	100.00%
Defined contribution plan employer matching contribution percent	100.00%	100.00%	100.00%
Thrift and profit sharing plan expenses	$ 4	$ 4	$ 4

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Stockholders' Equity (Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010		Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010		Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net Income											$ 193	$ 213	$ 236
PLUM CREEK TIMBER CO INC [Member]
Net Income	61	50	44	38	59	[1]	32	35	87	[2]	193	213	236
Unrealized Holding Gains (Losses)											(1)	2	5
Actuarial Gain/(Loss)											(31)	6	3
Reclassification to Net Income for Actuarial Gains or Losses											2	2	7
Total Comprehensive Income											169	221	248
Pretax Amount [Member] | PLUM CREEK TIMBER CO INC [Member]
Unrealized Holding Gains (Losses)											(1)	2	5
Actuarial Gain/(Loss)											(31)	6	3
Reclassification to Net Income for Actuarial Gains or Losses											2	2	7
Tax Expense (Benefit) [Member] | PLUM CREEK TIMBER CO INC [Member]
Unrealized Holding Gains (Losses)											0	0	0
Actuarial Gain/(Loss)											(6)	2	1
Less: Reclassification to Net Income											0	0	2
After Tax Amount [Member] | PLUM CREEK TIMBER CO INC [Member]
Net Income											193	213	236
Unrealized Holding Gains (Losses)											(1)	2	5
Actuarial Gain/(Loss)											(25)	4	2
Less: Reclassification to Net Income											2	2	5
Total Comprehensive Income											$ 169	$ 221	$ 248

[1] During the fourth quarter of 2010, the company paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

[2] The company’s 2010 first quarter net income includes an $11 million ($0.07 per diluted share) Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

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Employee Pension and Retirement Plans (Change in Benefit Obligation and Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Service Cost	$ 6	$ 6	$ 7
Interest Cost	8	7	8
Fair Value of Plan Assets at Beginning of Period	106
Employer Contributions	3	4
Fair Value of Plan Assets at End of Period	100	106
Funded Status-December 31	(64)	(29)
Current Liabilities	4	3
Noncurrent Liabilities	60	26
PLUM CREEK TIMBERLANDS L P [Member]
Service Cost	6	6	7
Interest Cost	8	7	8
Fair Value of Plan Assets at Beginning of Period	106
Employer Contributions	3	4
Fair Value of Plan Assets at End of Period	100	106
Funded Status-December 31	(64)	(29)
Current Liabilities	4	3
Noncurrent Liabilities	60	26
Change In Benefit Obligation [Member] | PLUM CREEK TIMBER CO INC [Member]
Benefit Obligation at Beginning of Period	135	130
Service Cost	6	6
Interest Cost	8	7
Actuarial Loss	21	1
Benefits Paid	(6)	(9)
Benefit Obligation at End of Period	164	135
Change In Benefit Obligation [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Benefit Obligation at Beginning of Period	135	130
Service Cost	6	6
Interest Cost	8	7
Actuarial Loss	21	1
Benefits Paid	(6)	(9)
Benefit Obligation at End of Period	164	135
Change In Fair Value Of Plan Assets [Member] | PLUM CREEK TIMBER CO INC [Member]
Fair Value of Plan Assets at Beginning of Period	106	96
Actual Return on Plan Assets	(3)	14
Employer Contributions	3	5
Benefits Paid	(6)	(9)
Fair Value of Plan Assets at End of Period	100	106
Change In Fair Value Of Plan Assets [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Fair Value of Plan Assets at Beginning of Period	106	96
Actual Return on Plan Assets	(3)	14
Employer Contributions	3	5
Benefits Paid	(6)	(9)
Fair Value of Plan Assets at End of Period	$ 100	$ 106

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Fair Value Measurements (Narrative) (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Deferred Compensation Obligations Included in Other Liabilities	$ 5,000,000	$ 5,000,000
Long-term Debt, Fair Value	2,980,000,000	2,830,000,000
Carrying Value of Company's Debt	2,773,000,000	2,686,000,000
PLUM CREEK TIMBERLANDS L P [Member]
Deferred Compensation Obligations Included in Other Liabilities	6,000,000	6,000,000
Long-term Debt, Fair Value	2,060,000,000	1,950,000,000
Carrying Value of Company's Debt	1,990,000,000	1,903,000,000
Trading Securities [Member] | PLUM CREEK TIMBER CO INC [Member]
Deferred Compensation Obligations Included in Other Liabilities	5,000,000	5,000,000
Trading Securities [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Deferred Compensation Obligations Included in Other Liabilities	$ 5,000,000	$ 5,000,000

XML

Borrowings (Schedule of Aggregate Maturities On Debt Agreements) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Total	$ 2,773	$ 2,686
PLUM CREEK TIMBERLANDS L P [Member]
Total	1,990	1,903
Debt Agreements [Member] | PLUM CREEK TIMBER CO INC [Member]
2012	353
2013	250
2014	3
2015	810
2016	3
Thereafter	575
Total	1,994
Debt Agreements [Member] | PLUM CREEK TIMBERLANDS L P [Member]
2012	353
2013	250
2014	3
2015	810
2016	3
Thereafter	575
Total	1,994
Note Payable to Timberland Venture [Member] | PLUM CREEK TIMBER CO INC [Member]
2012	0
2013	0
2014	0
2015	0
2016	0
Thereafter	783
Total	783
Total Debt Maturities [Member] | PLUM CREEK TIMBER CO INC [Member]
2012	353
2013	250
2014	3
2015	810
2016	3
Thereafter	1,358
Total	$ 2,777

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Timberland Venture - Equity Method Investment

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Timberland Venture - Equity Investment

TIMBERLAND VENTURE - EQUITY METHOD INVESTMENT

In 2008, the company contributed 454,000 acres of timberlands located in its Southern Resources Segment to Southern Diversified Timber, LLC (“the Timberland Venture”) in exchange for a $705 million preferred interest and a 9% common interest valued at $78 million. The Timberland Venture’s other member, an affiliate of The Campbell Group LLC, contributed $783 million of cash in exchange for 91% of the Timberland Venture’s common interest. Following the contribution, the company borrowed $783 million from the Timberland Venture (“Note Payable to Timberland Venture”).

The preferred interest is entitled to a cumulative preferred return equal to 7.875% per annum (approximately $56 million). No distributions can be made on the common interests until all current period and prior period preferred returns have been paid. Preferred return distributions are payable on March 15th and September 15th each year.

The annual interest rate on the Note Payable to Timberland Venture is fixed at 7.375%, resulting in annual interest expense of approximately $58 million. During the 10-year term of the note, interest is paid quarterly with the principal due upon maturity.

The activities of the Timberland Venture consist primarily of the ownership of timberlands and entering into cutting contracts with an affiliate of The Campbell Group for the sale and harvesting of timber. An affiliate of The Campbell Group is the manager of the Timberland Venture. The manager and the other member control the day-to-day operating decisions of the Timberland Venture. Plum Creek retains certain protective rights that require its consent before the Timberland Venture can take certain actions. For example, without Plum Creek’s consent and subject to certain exceptions, the Timberland Venture generally cannot sell properties, incur indebtedness, file for bankruptcy or enter into contracts with affiliates which are not arm’s length.

No gain was recognized in connection with the contribution of the timberlands to the venture in 2008. The book basis in the contributed timberlands was $174 million, and the company capitalized costs of $9 million in connection with the transfer. The Timberland Venture recorded the contributed timberlands at fair value, or $783 million. The difference between the beginning book basis in the venture ($174 million) and the company’s share of the equity in the net assets of the venture ($783 million) was allocated between standing timber ($289 million) and land ($320 million). In addition to the allocation of earnings to our common and preferred interests, the basis difference associated with standing timber is amortized into equity earnings based on the timber harvested during the period compared to the timber expected to be harvested over one timber rotation (approximately 27 years). The basis difference associated with land is recognized in equity earnings in the period in which timberlands are sold by the venture based on a per acre rate. Since the inception of the Timberland Venture through December 31, 2011, the company has recognized $21 million in equity earnings related to the amortization of the basis difference.

Both our preferred and common interests are accounted for based on the equity method of accounting. Equity earnings of the Timberland Venture are first allocated to our preferred interest to the extent of our preferred return with any excess earnings allocated among the common interests based on ownership percentage (i.e., 9% to our common interest). All of the equity earnings will be allocated to our preferred interest in years in which our preferred return equals or exceeds the earnings of the Timberland Venture. To the extent of any shortfall in equity earnings (cumulative preferred return in excess of allocated equity earnings), future years’ earnings will be allocated to our preferred interest when the earnings of the Timberland Venture exceed our preferred return. At December 31, 2011, the cumulative shortfall in allocated equity earnings is $20 million. In addition to equity earnings associated with our common and preferred interests, equity earnings include the amortization of the difference between the book basis of our investment in the Timberland Venture and our share of the Timberland Venture’s net assets. Equity earnings for the Timberland Venture consist of the following for the years ended December 31 (in millions):

	2011		2010		2009
Preferred Interest	$	50	$	50	$	48
Common Interest	—		—		—
Amortization of Basis Difference	6		7		7
Total Equity Earnings from Timberland Venture	$	56	$	57	$	55

Distributions from the Timberland Venture consist of the following for the years ended December 31 (in millions):

	2011		2010		2009
Preferred Interest	$	56	$	56	$	53
Common Interest	—		1		—
Total Distributions from Timberland Venture	56		57		53

The Timberland Venture can only be liquidated with the consent of both members. However, upon the nine year anniversary of the Timberland Venture, Plum Creek has the right for a six-month period to cause the Timberland Venture to redeem the other member’s interest. The other Timberland Venture member has a similar redemption right after the seven year anniversary. Upon liquidation or redemption, the members’ interests (i.e. capital accounts) will be adjusted to reflect the fair value of the Timberland Venture’s net assets. The adjustment would first be allocated to our preferred interest if there exists an accumulated shortfall in net income attributable to our preferred interest but only to the extent that the fair value of the net assets of the Timberland Venture exceed book basis.

For the years ended December 31, 2011, 2010 and 2009, the Timberland Venture was considered a Significant Subsidiary in accordance with the financial reporting requirements of the Securities and Exchange Commission. Accordingly, the audited financial statements of the Timberland Venture are attached as an exhibit to the company’s 2011 Form 10-K filing.

PLUM CREEK TIMBERLANDS L P [Member]

Timberland Venture - Equity Investment

TIMBERLAND VENTURE - EQUITY METHOD INVESTMENT

In 2008, a subsidiary of the Operating Partnership, Plum Creek Timber Operations I, LLC (“PC Member”), contributed 454,000 acres of timberlands located in its Southern Resources Segment to Southern Diversified Timber, LLC (“the Timberland Venture”) in exchange for a $705 million preferred interest and a 9% common interest valued at $78 million. The Timberland Venture’s other member, an affiliate of The Campbell Group LLC, contributed $783 million of cash in exchange for 91% of the Timberland Venture’s common interest. Following the formation of the Timberland Venture, PC Ventures borrowed $783 million from the Timberland Venture. PC Ventures used the proceeds from the borrowing to make a $783 million capital contribution to the Operating Partnership. See Note 8 of the Notes to Consolidated Financial Statements.

PC Member’s preferred interest in the Timberland Venture is entitled to a cumulative preferred return equal to 7.875% per annum (approximately $56 million). The Timberland Venture cannot make distributions on the common interests until all current period and prior period preferred returns have been paid. Preferred return distributions are payable on March 15th and September 15th each year.

The activities of the Timberland Venture consist primarily of the ownership of timberlands and entering into cutting contracts with an affiliate of The Campbell Group for the sale and harvesting of timber. An affiliate of The Campbell Group is the manager of the Timberland Venture. The manager and the other member control the day-to-day operating decisions of the Timberland Venture. PC Member retains certain protective rights that require its consent before the Timberland Venture can take certain actions. For example, without PC Member’s consent and subject to certain exceptions, the Timberland Venture generally cannot sell properties, incur indebtedness, file for bankruptcy or enter into contracts with affiliates which are not arm’s length.

No gain was recognized in connection with the contribution of the timberlands to the venture in 2008. The book basis in the contributed timberlands was $174 million, and PC Member capitalized costs of $9 million in connection with the transfer. The Timberland Venture recorded the contributed timberlands at fair value, or $783 million. The difference between the beginning book basis in the venture ($174 million) and PC Member’s share of the equity in the net assets of the venture ($783 million) was allocated between standing timber ($289 million) and land ($320 million). In addition to the allocation of earnings to our common and preferred interests, the basis difference associated with standing timber is amortized into equity earnings based on the timber harvested during the period compared to the timber expected to be harvested over one timber rotation (approximately 27 years). The basis difference associated with land is recognized in equity earnings in the period in which timberlands are sold by the venture based on a per acre rate. Since the inception of the Timberland Venture through December 31, 2011, the Operating Partnership has recognized $21 million in equity earnings related to the amortization of the basis difference.

Both our preferred and common interests are accounted for based on the equity method of accounting. Equity earnings of the Timberland Venture are first allocated to our preferred interest to the extent of our preferred return with any excess earnings allocated among the common interests based on ownership percentage (i.e., 9% to our common interest). All of the equity earnings will be allocated to our preferred interest in years in which our preferred return equals or exceeds the earnings of the Timberland Venture. To the extent of any shortfall in equity earnings (cumulative preferred return in excess of allocated equity earnings), future years’ earnings will be allocated to our preferred interest when the earnings of the Timberland Venture exceed our preferred return. At December 31, 2011, the cumulative shortfall in allocated equity earnings is $20 million. In addition to equity earnings associated with our common and preferred interests, equity earnings include the amortization of the difference between the book basis of our investment in the Timberland Venture and our share of the Timberland Venture’s net assets. Equity earnings for the Timberland Venture consist of the following for the years ended December 31 (in millions): 

	2011		2010		2009
Preferred Interest	$	50	$	50	$	48
Common Interest	—		—		—
Amortization of Basis Difference	6		7		7
Total Equity Earnings from Timberland Venture	$	56	$	57	$	55

Distributions from the Timberland Venture consist of the following for the years ended December 31 (in millions):

	2011		2010		2009
Preferred Interest	$	56	$	56	$	53
Common Interest	—		1		—
Total Distributions from Timberland Venture	$	56	$	57	$	53

The Timberland Venture can only be liquidated with the consent of both members. However, upon the nine year anniversary of the Timberland Venture, PC Member has the right for a six-month period to cause the Timberland Venture to redeem the other member’s interest. The other Timberland Venture member has a similar redemption right after the seven year anniversary. Upon liquidation or redemption, the members’ interests (i.e. capital accounts) will be adjusted to reflect the fair value of the Timberland Venture’s net assets. The adjustment would first be allocated to our preferred interest if there exists an accumulated shortfall in net income attributable to our preferred interest but only to the extent that the fair value of the net assets of the Timberland Venture exceed book basis.

For the years ended December 31, 2011, 2010, and 2009, the Timberland Venture was considered a Significant Subsidiary in accordance with the financial reporting requirements of the Securities and Exchange Commission. Accordingly, the audited financial statements of the Timberland Venture are attached as an exhibit to Plum Creek’s 2011 Form 10-K filing.

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Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Equity Earnings and Distributions

Equity earnings and distributions from the Timberland Venture were as follows for the years ended December 31 (in millions): 

	2011		2010		2009
Equity Earnings	$	56	$	57	$	55
Distributions	56		57		53

Interest Expense and Payments

Interest expense and paid with respect to the Note Payable to Timberland Venture were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Interest Expense	$	58	$	58	$	58
Interest Payments	58		58		58

Interest Payable to Timberland Venture

As a result, the company had accrued interest payable for the Note Payable to Timberland Venture at December 31 (in millions):

	2011		2010
Interest Payable (to related party)	$	7	$	7

PLUM CREEK TIMBERLANDS L P [Member]

Equity Earnings and Distributions

Equity earnings and distributions from the Timberland Venture were as follows for the years ended December 31 (in millions): 

	2011		2010		2009
Equity Earnings	$	56	$	57	$	55
Distributions	56		57		53

Schedule of Cash Distributions

The Operating Partnership made the following cash distributions to PC Ventures for the years ended December 31 (in millions): 

	2011		2010		2009
Cash Distributions	$	58	$	58	$	58

XML

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2011

Dec. 31, 2010

PLUM CREEK TIMBER CO INC [Member]

Level 1 Assets Reported in the Company's Financial Statements at Fair Value, Measured on a Recurring Basis

Assets and Liabilities Measured at Fair Value on a Recurring Basis. The company’s fair value measurements of its financial instruments, measured on a recurring basis, are categorized as Level 1 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 1 valuation is based on quoted prices in active markets at the measurement date for identical unrestricted assets or liabilities. Summarized below are the Level 1 assets reported in the company’s financial statements at fair value, measured on a recurring basis (in millions):

	Balance at December 31, 2011		Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	253	$	253
Available-for-Sale Securities (B)	31		31
Trading Securities (B)	5		5
Total	$	289	$	289
	Balance at December 31, 2010		Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	249	$	249
Available-for-Sale Securities (B)	30		30
Trading Securities (B)	5		5
Total	$	284	$	284

^(A)  Consists of several money market funds and is included in the $254 million and $252 million of Cash and Cash Equivalents in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010, respectively.

^(B)  Consists of several mutual funds and is included in Investment in Grantor Trusts in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010. At December 31, 2011, investments in these mutual funds were approximately 45% in domestic (U.S.) equities, 25% in international equities and 30% in debt securities.

Level 3 Assets and Liabilities Reported in the Company's Financial Statements at Fair Value, Measured on a Nonrecurring Basis

Summarized below are the Level 3 assets and liabilities reported in the company’s financial statements at fair value, measured on a nonrecurring basis, during the year ended December 31, 2010 (in millions):

	2010		Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements)		Net Gain (Loss)
Timberlands Held for Sale (A)	$	2	$	2	$	(1	)
Total					$	(1	)

^(A)  During 2010, timberlands held for sale with a carrying value of $3 million were written down to their fair value (net of estimated selling costs) of $2 million, resulting in a loss of $1 million, which was included in earnings for the year ended December 31, 2010. These timberlands were sold in 2011. The fair value was based on an external appraisal which was derived from a combination of comparable sales and discounted future cash flows. The discounted future cash flows were based on estimated future timber prices and related operating expenses using internal and external projections.

PLUM CREEK TIMBERLANDS L P [Member]

Level 1 Assets Reported in the Company's Financial Statements at Fair Value, Measured on a Recurring Basis

Assets and Liabilities Measured at Fair Value on a Recurring Basis. The Operating Partnership’s fair value measurements of its financial instruments, measured on a recurring basis, are categorized as Level 1 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 1 valuation is based on quoted prices in active markets at the measurement date for identical unrestricted assets or liabilities. Summarized below are the Level 1 assets reported in the Operating Partnership’s financial statements at fair value, measured on a recurring basis (in millions):

	Balance at December 31, 2011		Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	253	$	253
Available-for-Sale Securities (B)	31		31
Trading Securities (B)	5		5
Total	$	289	$	289
	Balance at December 31, 2010		Fair Value Measurements at Reporting Date Using Quoted Prices in Active   Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	249	$	249
Available-for-Sale Securities (B)	30		30
Trading Securities (B)	5		5
Total	$	284	$	284

^(A)  Consists of several money market funds and is included in the $254 million and $252 million of Cash and Cash Equivalents in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010, respectively.

^(B)  Consists of several mutual funds and is included in Investment in Grantor Trusts in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010. At December 31, 2011, investments in these mutual funds were approximately 45% in domestic (U.S.) equities, 25% in international equities and 30% in debt securities.

Level 3 Assets and Liabilities Reported in the Company's Financial Statements at Fair Value, Measured on a Nonrecurring Basis

Summarized below are the Level 3 assets and liabilities reported in the Operating Partnership’s financial statements at fair value, measured on a nonrecurring basis, during the year ended December 31, 2010 (in millions):

	2010		Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements)		Net Gain (Loss)
Timberlands Held for Sale (A)	$	2	$	2	$	(1	)
Total					$	(1	)

^(A)  During 2010, timberlands held for sale with a carrying value of $3 million were written down to their fair value (net of estimated selling costs) of $2 million, resulting in a loss of $1 million, which was included in earnings for the year ended December 31, 2010. These timberlands were sold in 2011. The fair value was based on an external appraisal which was derived from a combination of comparable sales and discounted future cash flows. The discounted future cash flows were based on estimated future timber prices and related operating expenses using internal and external projections.

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Restricted Net Assets (Condensed Unconsolidated Statements of Cash Flows Data) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net Income	$ 193	$ 213	$ 236
PLUM CREEK TIMBER CO INC [Member]
Net Income	193	213	236
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Net Cash Provided By (Used In) Operating Activities	374	449	540
Net Cash Provided By (Used In) Investing Activities	(171)	(58)	(64)
Cash Flows From Financing Activities:
Dividends	(272)	(272)	(275)
Proceeds from Stock Options Exercises	10	2	0
Acquisition of Treasury Stock	26	51	87
Net Cash Provided By (Used In) Financing Activities	(201)	(438)	(546)
Increase In Cash and Cash Equivalents	2	(47)	(70)
Cash and Cash Equivalents:
Beginning of Year	(252)	(299)	(369)
End of Year	(254)	(252)	(299)
Parent [Member] | PLUM CREEK TIMBER CO INC [Member]
Net Income	193	213	236
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Equity Earnings From Consolidated Subsidiaries	(193)	(213)	(236)
Net Cash Provided By (Used In) Operating Activities	0	0	0
Net Cash Provided By (Used In) Investing Activities	0	0	0
Cash Flows From Financing Activities:
Dividends	(272)	(272)	(275)
Cash Distribution from Plum Creek Timberlands, L.P.	288	321	362
Proceeds from Stock Options Exercises	10	2	0
Acquisition of Treasury Stock	(26)	(51)	(87)
Net Cash Provided By (Used In) Financing Activities	0	0	0
Increase In Cash and Cash Equivalents	0	0	0
Cash and Cash Equivalents:
Beginning of Year	0	0	0
End of Year	$ 0	$ 0	$ 0

XML

Share-Based Compensation Plans (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 Year	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Share-based Compensation Arrangement by Payment Award, Award Vesting Rights	25.00%
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	2
Shares of common stock reserved and eligible for issuance	12.4
Shares of common stock used during the period	6.3
Shares of common stock remain available for grants	6.1
Total compensation expense for the share-based compensation plans	$ 10	$ 5	$ 12
Tax benefits recognized associated with share-based compensation plans	2	1	2
Unrecognized Compensation Expense	17.0
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
PLUM CREEK TIMBERLANDS L P [Member]
Share-based Compensation Arrangement by Payment Award, Award Vesting Rights	25.00%
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	2
Shares of common stock reserved and eligible for issuance	12.4
Shares of common stock used during the period	6.3
Shares of common stock remain available for grants	6.1
Total compensation expense for the share-based compensation plans	10	5	12
Tax benefits recognized associated with share-based compensation plans	2	1	2
Unrecognized Compensation Expense	17.0
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Stock Option [Member] | PLUM CREEK TIMBER CO INC [Member]
Share-based Compensation Arrangement by Payment Award, Award Vesting Rights	25.00%
Term of Stock Options	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Stock Option [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Share-based Compensation Arrangement by Payment Award, Award Vesting Rights	25.00%
Term of Stock Options	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Restricted Stock [Member] | PLUM CREEK TIMBER CO INC [Member]
Weighted-Average Grant Date Fair Value	$ 41.99	$ 35.60	$ 31.32
Fair value of restricted stock vested during the period	0.7	0.6	0.6
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	6 months
Restricted Stock [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Weighted-Average Grant Date Fair Value	$ 41.99	$ 35.60	$ 31.32
Fair value of restricted stock vested during the period	0.7	0.6	0.6
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	6 months
Restricted Stock Units (RSUs) [Member] | PLUM CREEK TIMBER CO INC [Member]
Share-based Compensation Arrangement by Payment Award, Award Vesting Rights	25.00%
Weighted-Average Grant Date Fair Value	$ 41.45	$ 35.27	$ 33.73
Fair value of restricted stock vested during the period	4.0	3.0	2.0
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Restricted Stock Units (RSUs) [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Share-based Compensation Arrangement by Payment Award, Award Vesting Rights	25.00%
Weighted-Average Grant Date Fair Value	$ 41.45	$ 35.27	$ 33.73
Fair value of restricted stock vested during the period	$ 4.0	$ 3.0	$ 2.0
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Value Management Awards [Member] | PLUM CREEK TIMBER CO INC [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Value Management Awards [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years

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Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Property, Plant and Equipment

Property, Plant and Equipment consisted of the following (in millions):

	December 31, 2011			December 31, 2010
Land, Buildings and Improvements	$	86		$	84
Machinery and Equipment	315			309
	401			393
Accumulated Depreciation	(263		)	(247		)
Property, Plant and Equipment, net	$	138		$	146

PLUM CREEK TIMBERLANDS L P [Member]

Property, Plant and Equipment

Property, Plant and Equipment consisted of the following (in millions):

	December 31, 2011			December 31, 2010
Land, Buildings and Improvements	$	86		$	84
Machinery and Equipment	315			309
	401			393
Accumulated Depreciation	(263		)	(247		)
Property, Plant and Equipment, net	$	138		$	146

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Unaudited Selected Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Schedule of Quarterly Financial Information [Table Text Block]

(In Millions, Except Per Share Amounts)	1st Quarter  (B)		2nd Quarter		3rd Quarter		4th Quarter  (C)
2011
Revenues	$	275	$	284	$	293	$	315
Gross Profit	85		88		93		112
Operating Income	60		63		69		83
Net Income	38		44		50		61
Net Income per Share—Basic(A)	$	0.23	$	0.27	$	0.31	$	0.38
Net Income per Share—Diluted(A)	$	0.23	$	0.27	$	0.31	$	0.38
2010
Revenues	$	317	$	258	$	259	$	356
Gross Profit	119		73		71		120
Operating Income	95		56		51		95
Income from Continuing Operations	76		35		32		59
Net Income	87		35		32		59
Net Income per Share—Basic(A)	$	0.54	$	0.21	$	0.20	$	0.37
Net Income per Share—Diluted(A)	$	0.54	$	0.21	$	0.20	$	0.37

^(A)  Net income per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly net income per share may not equal the total computed for the year.

^(B)  The company’s 2010 first quarter net income includes an $11 million ($0.07 per diluted share) Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

^(C)  During the fourth quarter of 2010, the company paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

PLUM CREEK TIMBERLANDS L P [Member]

Schedule of Quarterly Financial Information [Table Text Block]

(In Millions)	1st Quarter  (A)		2nd Quarter		3rd Quarter		4th Quarter  (B)
2011
Revenues	$	275	$	284	$	293	$	315
Gross Profit	85		88		93		112
Operating Income	60		63		69		83
Net Income Available to Common Interest Partners	38		44		50		61
2010
Revenues	$	317	$	258	$	259	$	356
Gross Profit	119		73		71		120
Operating Income	95		56		51		95
Income from Continuing Operations	76		35		32		59
Net Income Available to Common Interest Partners	87		35		32		59

^(A)  The Operating Partnership’s 2010 first quarter net income includes an $11 million Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

^(B)  During the fourth quarter of 2010, the Operating Partnership paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

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Borrowings (Schedule of Debt and Parenthetical Information) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2008	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Total	$ 2,773		$ 2,686
Current Portion of Long-Term Debt	352		94
Line of Credit	348		166
Long Term Portion Of Total Borrowings	2,073		2,426
Long-term Debt, Excluding Current Maturities	1,290		1,643
PLUM CREEK TIMBERLANDS L P [Member]
Total	1,990		1,903
Current Portion of Long-Term Debt	352		94
Line of Credit	348		166
Long-term Debt, Excluding Current Maturities	1,290		1,643
Term Credit Agreement [Member] | PLUM CREEK TIMBER CO INC [Member]
Total	350		350
Debt Instrument, Maturity Date	Jul. 10, 2012
Debt Instrument, Interest Rate at Period End	0.65%
Debt Instrument, Interest Rate Terms	LIBOR plus 0.375%
Term Credit Agreement [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Total	350		350
Debt Instrument, Maturity Date	Jul. 10, 2012
Debt Instrument, Interest Rate at Period End	0.65%
Debt Instrument, Interest Rate Terms	LIBOR plus 0.375%
Senior Notes due 2011, 7.83% [Member] | PLUM CREEK TIMBER CO INC [Member]
Total	0		49
Debt Instrument, Maturity Date	Feb. 12, 2011
Debt Instrument, Interest Rate, Stated Percentage	7.83%
Senior Notes due 2011, 7.83% [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Total	0		49
Debt Instrument, Maturity Date	Feb. 12, 2011
Debt Instrument, Interest Rate, Stated Percentage	7.83%
Senior Notes due 2013, 6.18% [Member] | PLUM CREEK TIMBER CO INC [Member]
Total	174		174
Debt Instrument, Maturity Date	Jan. 21, 2013
Debt Instrument, Interest Rate, Stated Percentage	6.18%
Senior Notes due 2013, 6.18% [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Total	174		174
Debt Instrument, Maturity Date	Jan. 21, 2013
Debt Instrument, Interest Rate, Stated Percentage	6.18%
Senior Notes due 2013, 7.76% less unamortized discount of $0.3 at 12/31/11, effective rate of 8.05% [Member] | PLUM CREEK TIMBER CO INC [Member]
Total	72		111
Debt Instrument, Maturity Date	Oct. 01, 2013
Debt Instrument, Interest Rate, Stated Percentage	7.76%
Debt Instrument, Unamortized Discount	0.3
Debt Instrument, Interest Rate, Effective Percentage	8.05%
Senior Notes due 2013, 7.76% less unamortized discount of $0.3 at 12/31/11, effective rate of 8.05% [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Total	72		111
Debt Instrument, Maturity Date	Oct. 01, 2013
Debt Instrument, Interest Rate, Stated Percentage	7.76%
Debt Instrument, Unamortized Discount	0.3
Debt Instrument, Interest Rate, Effective Percentage	8.05%
Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10% [Member] | PLUM CREEK TIMBER CO INC [Member]
Total	454		454
Debt Instrument, Maturity Date	Nov. 15, 2015
Debt Instrument, Interest Rate, Stated Percentage	5.875%
Debt Instrument, Unamortized Discount	3.4
Debt Instrument, Interest Rate, Effective Percentage	6.10%
Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10% [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Total	454		454
Debt Instrument, Maturity Date	Nov. 15, 2015
Debt Instrument, Interest Rate, Stated Percentage	5.875%
Debt Instrument, Unamortized Discount	3.4
Debt Instrument, Interest Rate, Effective Percentage	6.10%
Senior Notes due 2016, mature serially 2012 to 2016, 8.05% [Member] | PLUM CREEK TIMBER CO INC [Member]
Total	17		24
Debt Instrument, Maturity Date	Nov. 13, 2016
Debt Instrument, Interest Rate, Stated Percentage	8.05%
Debt Instrument, Maturity Date Range, Start	2012
Debt Instrument, Maturity Date Range, End	2016
Senior Notes due 2016, mature serially 2012 to 2016, 8.05% [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Total	17		24
Debt Instrument, Maturity Date	Nov. 13, 2016
Debt Instrument, Interest Rate, Stated Percentage	8.05%
Debt Instrument, Maturity Date Range, Start	2012
Debt Instrument, Maturity Date Range, End	2016
Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71% [Member] | PLUM CREEK TIMBER CO INC [Member]
Total	575		575
Debt Instrument, Maturity Date	Mar. 15, 2021
Debt Instrument, Interest Rate, Stated Percentage	4.70%
Debt Instrument, Unamortized Discount	0.3
Debt Instrument, Interest Rate, Effective Percentage	4.71%
Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71% [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Total	575		575
Debt Instrument, Maturity Date	Mar. 15, 2021
Debt Instrument, Interest Rate, Stated Percentage	4.70%
Debt Instrument, Unamortized Discount	0.3
Debt Instrument, Interest Rate, Effective Percentage	4.71%
Note Payable to Timberland Venture [Member] | PLUM CREEK TIMBER CO INC [Member]
Total	783		783
Debt Instrument, Maturity Date	Oct. 01, 2018
Related Party Transaction, Rate	7.375%	7.375%
Revolving Line of Credit [Member] | PLUM CREEK TIMBER CO INC [Member]
Line of Credit	348		166
Debt Instrument, Maturity Date	Jan. 30, 2015
Line Of Credit Facility Weighted Average Interest Rate At Period End	1.71%		1.95%
Line of Credit Facility, Interest Rate Description	LIBOR plus 1.50%
Revolving Line of Credit [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Line of Credit	$ 348		$ 166
Debt Instrument, Maturity Date	Jan. 30, 2015
Line Of Credit Facility Weighted Average Interest Rate At Period End	1.71%		1.95%
Line of Credit Facility, Interest Rate Description	LIBOR plus 1.50%

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Related Party Transactions (Cash Distribution) (Details) (PLUM CREEK TIMBERLANDS L P [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBERLANDS L P [Member]
Cash payments related to Series T-1 Redeemable Preferred Partnership Interest.	$ 58	$ 58	$ 58

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Income Taxes (Schedule of Income Tax Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Federal-Current	$ 0	$ 0	$ (14)	[1]
State-Current	(2)	0	(2)
Federal-Deferred	0	3	0
State-Deferred	0	0	0
Utilization of (Benefit from) Operating Loss Carryforward	(2)	(1)	(12)
Change to Valuation Allowance	3	0	0
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	0	(1)	(3)
Provision (Benefit) for Income Taxes	(1)	1	(31)
PLUM CREEK TIMBERLANDS L P [Member]
Federal-Current	0	0	(14)	[1]
State-Current	(2)	0	(2)
Federal-Deferred	0	3	0
State-Deferred	0	0	0
Utilization of (Benefit from) Operating Loss Carryforward	(2)	(1)	(12)
Change to Valuation Allowance	3	0	0
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	0	(1)	(3)
Provision (Benefit) for Income Taxes	$ (1)	$ 1	$ (31)

[1] Included in the current tax provision for 2009 is a $12 million tax benefit associated with the carryback of net operating losses to 2004 and 2005 as a result of the Worker, Homeownership and Business Assistance Act of 2009.

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Detail of Certain Balance Sheet Accounts (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Schedule of Other Assets and Other Liabilities [Table Text Block]

Certain balance sheet accounts consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Other Current Assets
Prepaid Expenses	$	7	$	6
Taxes Receivable	3		2
Notes Receivable	2		5
Cash Held in Escrow	—		9
Other	3		2
	$	15	$	24
Other Non-Current Assets
Real Estate Development Properties	$	13	$	14
Unamortized Debt Issue Costs	8		11
Deposits	5		5
Notes Receivable	8		10
Other	2		4
	$	36	$	44
Other Current Liabilities
Accrued Pension Liability	$	4	$	3
Workers’ Compensation	2		2
Other	2		2
	$	8	$	7
Other Non-Current Liabilities
Timber Obligations	$	6	$	6
Deferred Compensation	5		5
Long-Term Incentive Compensation	3		2
Accrued Pension Liability	60		26
Deferred Revenue	20		22
Workers’ Compensation	10		10
Other	4		5
	$	108	$	76

PLUM CREEK TIMBERLANDS L P [Member]

Schedule of Other Assets and Other Liabilities [Table Text Block]

Certain balance sheet accounts consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Other Current Assets
Prepaid Expenses	$	7	$	6
Taxes Receivable	3		2
Notes Receivable	2		5
Cash Held in Escrow	—		9
Other	3		2
	$	15	$	24
Other Non-Current Assets
Real Estate Development Properties	$	13	$	14
Unamortized Debt Issue Costs	8		11
Deposits	5		5
Notes Receivable	8		10
Other	2		4
	$	36	$	44
Other Current Liabilities
Accrued Pension Liability	$	4	$	3
Workers’ Compensation	2		2
Other	2		2
	$	8	$	7
Other Non-Current Liabilities
Timber Obligations	$	6	$	6
Deferred Compensation	6		6
Long-Term Incentive Compensation	3		2
Accrued Pension Liability	60		26
Deferred Revenue	20		22
Workers’ Compensation	10		10
Other	4		5
	$	109	$	77

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Accounting Policies

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Accounting Policies

ACCOUNTING POLICIES

General. Plum Creek Timber Company, Inc. (“Plum Creek,” “the company,” “we,” “us,” or “our”), a Delaware Corporation, is a real estate investment trust, or “REIT”, for federal income tax purposes. Plum Creek Timber Company, Inc. is also the parent company of its wholly-owned subsidiary Plum Creek Timberlands, L.P. (“the Partnership”), a Delaware Limited Partnership. At December 31, 2011, the company owned and managed approximately 6.6 million acres of timberlands in the Northwest, Southern and Northeast United States, and owned 8 wood product conversion facilities in the Northwest United States (2 of which have been curtailed). Included in the 6.6 million acres are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. In addition, the company has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller acreage transactions over the near and medium term. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Basis of Presentation. The consolidated financial statements of the company include the accounts of Plum Creek Timber Company, Inc. and its subsidiaries. Intercompany transactions and accounts have been eliminated in consolidation. All transactions are denominated in United States dollars.

Use of Estimates. The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Customer Concentrations. The following table sets forth the annual revenues from the company’s largest customer as a percentage of total annual revenues for the years ended December 31:

	2011		2010		2009
Customer Revenue as a Percentage of Total Revenues	7	%	7	%	7	%

If adverse market conditions for wood products were to continue or worsen, the loss of this customer could have a significant effect on the company’s results of operations.

Product Concentrations. Sales of the company’s timber and wood products are dependent upon the economic conditions of the housing, repair and remodeling, industrial, and pulp and paper industries. Sales of the company’s timberlands are dependent upon the general economic conditions in the United States, interest rates and the availability of buyer financing from financial institutions, not-for-profit organizations and government sources. As a result of these product concentrations, continued or worsening conditions in these markets could have a significant impact on the company’s results of operations.

Revenue Recognition. Timber sales revenues are recognized when legal ownership and the risk of loss transfers to the purchaser and the quantity sold is determinable. The company sells timber under delivered log agreements as well as through sales of standing timber (or “stumpage”). For delivered sales, revenue, which includes amounts billed for shipping and handling (logging and hauling of timber), is recognized when the log is delivered to the customer. Stumpage is sold using pay-as-cut or timber deed sale agreements. Under a pay-as-cut sales contract, the purchaser acquires the right to harvest specified timber on a tract, at an agreed upon price per unit. The sale and any related advances are recognized as revenue as the purchaser harvests the timber on the tract. Under a timber deed sale, the buyer agrees to purchase and harvest specified timber on a tract of land over the term of the contract (usually less than 18 months). Unlike a pay-as-cut sales contract, risk of loss and title to the trees transfer to the buyer when the contract is signed. The buyer also pays the full purchase price when the contract is signed. Revenue from a timber deed sale is recognized when the contract is signed.

Revenues generated from the sale of lumber, plywood, medium density fiberboard (“MDF”) and related by-products (primarily wood chips), and amounts billed for shipping and handling, are recognized at the time of delivery.

Revenue from the sale of real estate is recognized when the sale has been consummated, the buyer’s initial and ongoing payments are adequate, the risks and rewards of owning the property have transferred to the buyer, and we have no continuing involvement with the property. For substantially all of our real estate sales, we receive the entire consideration in cash at closing (“Cash Sales”). Also at closing, the risks and rewards of ownership transfer to the buyer and we do not have a continuing involvement in our properties after they are sold. We recognize revenue under the full accrual method for Cash Sales of real estate when the sale is consummated (i.e., at closing). On occasion, we receive a portion of the real estate sale consideration in the form of a note receivable. These sales ("Credit Sales") as a percentage of total real estate sales were as follows for the years ended December 31:

	2011		2010		2009
Credit Sales as a Percentage of Total Real Estate Sales	0	%	3	%	3	%

Under these circumstances, we use the full accrual method of recognizing revenue if the buyer’s initial and continuing investment is adequate; otherwise, revenue is generally recognized under the cost recovery method or deposit method, depending on the circumstances. Revenue from real estate development projects is generally recognized under the full accrual method of accounting because sales generally do not commence until the project is completed. Broker commissions and closing costs of our Real Estate Segment are included in Cost of Goods Sold.

We occasionally sell timberlands to a single buyer under a multi-period contract covering a series of prescheduled closings and/or options. Under these multi-period contracts, once title and risk of loss have transferred to the buyer for individual properties, the properties sold cannot be returned for a refund. However, deposits for future closings under multi-period contracts may be refunded under certain circumstances. The company treats each closing under a multi-period arrangement as a separate sale. Revenue in connection with a multi-period contract is generally recognized at closing equal to the lesser of the non-refundable consideration received or an allocation of total consideration based on fair value.

Furthermore, we may occasionally pursue a non-cash exchange of timberlands. Revenue is recognized in connection with non-cash exchanges of timberlands when the exchanges are considered to have commercial substance. We will recognize revenue to the extent of the fair value of the timberlands received. Revenues from non-cash exchanges of timberlands were $25 million in 2009.

Revenue generated from real estate sales includes the sale of higher value timberlands, non-strategic timberlands and large blocks of timberlands. In some of these transactions, the company sells timberlands that qualify for like-kind (tax-deferred) exchange treatment under the Internal Revenue Code. Substantially all of these sales involve a third party intermediary, whereby the third party intermediary receives proceeds related to the property sold and then reinvests the proceeds in like-kind property. The proceeds are recorded as revenue when the third party intermediary receives them. See “Like-Kind Exchanges”.

Cash and Cash Equivalents. All highly liquid investments purchased with an original maturity of three months or less are considered to be cash equivalents. Substantially all of the cash and cash equivalents are invested in money market funds.

Accounts Receivable. Accounts receivable is presented net of an allowance for doubtful accounts of $0.4 million at December 31, 2011 and $0.4 million at December 31, 2010. Accounts are deemed past due based on payment terms. The allowance for doubtful accounts represents management’s estimate and is based on historical losses, recent collection history, credit ratings of individual customers and existing economic conditions. Delinquent accounts are charged against the allowance for doubtful accounts to the extent and at the time they are deemed uncollectible.

Like-Kind Exchanges. Plum Creek may enter into like-kind (tax-deferred) exchange transactions to acquire and sell assets, principally timberlands. These transactions may include both forward (timberlands sold, followed by reinvestment of proceeds to acquire timberlands) and reverse (timberlands purchased, followed by receipt of proceeds from timberland sales) like-kind exchanges. The company uses a qualified escrow account to facilitate like-kind exchange transactions. Funds from forward like-kind exchange transactions are restricted from being used until the funds are either successfully reinvested in timber and timberlands or the exchange fails and the proceeds are distributed to the company.

Inventories. Logs, work-in-process and finished goods are stated at the lower of cost or market using the average cost method. A separate lower of cost or market analysis is prepared for each product line (i.e. lumber, plywood and MDF). Net realizable value is determined based on actual selling prices at the end of the accounting period. Losses on firm purchase commitments for logs are recorded when the related manufactured finished products are expected to be sold at a loss based on current product prices. Supplies inventories are stated at cost. Costs for manufactured inventories include raw materials, labor, supplies, energy, depreciation and production overhead. Cost of log inventories include timber depletion, stumpage, associated logging and harvesting costs, road costs and production overhead.

Timber and Timberlands. Timber (including timber deeds and logging roads) and timberlands (including mineral reserves) are stated at cost less accumulated depletion for timber previously harvested and accumulated road amortization. The company capitalizes timber and timberland purchases along with reforestation costs and other costs associated with the planting and growing of timber, such as site preparation, growing or purchases of seedlings, planting, fertilization, herbicide application and the thinning of tree stands to improve growth. The company presents timber and timberland purchases and the capitalized costs described above under Investing Activities on the Consolidated Statements of Cash Flows. A timber deed, also called timber cutting rights, allows the company to harvest timber on timberlands it does not own over a specific time period (currently less than 10 years). The company capitalizes timber deed acquisitions. The company presents timber deed acquisitions under Operating Activities on the Consolidated Statements of Cash Flows. Timber carrying costs, such as real estate taxes, insect control, wildlife control, leases of timberlands (other than lease payments for the purchase of standing timber, in which case the payments are capitalized) and forest management personnel salaries and fringe benefits, are expensed as incurred. Costs of major roads are capitalized and amortized over 30 years. Costs for roads that are built to access multiple logging sites over numerous years are capitalized and amortized over 6 years. Costs for roads built to access a single logging site are expensed as incurred.

Costs attributable to timber harvested, or depletion, are charged against income as trees are harvested. Depletion rates are determined annually based on the relationship between net carrying value of the timber plus certain capitalizable silviculture costs expected to be incurred over the harvest cycle and total timber volume estimated to be available over the harvest cycle. The depletion rate does not include an estimate for either future reforestation costs associated with a stand’s final harvest or future volume in connection with the replanting of a stand subsequent to its final harvest. Net carrying value of the timber and timberlands is used to compute the gain or loss in connection with timberland sales.

Higher and Better Use Timberlands / Real Estate Development. We estimate that included in the company’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber. Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries.

Costs associated with a specific real estate project are capitalized when management estimates that it is probable that a project will be successful. Both external and internal expenditures directly associated with the specific real estate project are capitalized. The company will capitalize improvements and other development costs, including interest costs and property taxes, during the development period. General real estate development costs not related to a specific project and costs incurred before management has concluded that it is probable that a project will be successful (e.g. investigatory costs) are expensed as incurred. For real estate projects with multiple parcels, the company determines the cost of the individual lots sold by allocating the historical cost of the land, timber, development and common construction costs on a relative sales value.

Properties developed by the company will generally be low-intensity development limited to activities associated with obtaining entitlements. Capitalized real estate development costs, including the book basis in the related timber and timberlands associated with these developments, were $13 million at December 31, 2011. Substantially all of these properties are expected to be sold beyond one year and are included in Other Assets (non-current). Total capitalized real estate development costs at December 31, 2010 were $14 million.

Larger and more complicated projects needing more invested capital may be developed through third party ventures. These projects have a longer timeframe and are not expected to be sold in the near term. The capitalized development costs for these projects and the book basis of the related timber and timberlands are included in Timber and Timberlands as they are still managed for timber operations. At December 31, 2011, approximately $18 million of costs have been capitalized for a single project that has been approved by a state commission but is being appealed in court by groups opposed to the project. While not expected, if the approval is reversed, some or all of these capitalized costs could be written off in the next twelve months.

The book basis of timberlands that are considered held for sale are presented in the Consolidated Balance Sheet as Assets Held for Sale. The total book basis for assets held for sale was $103 million at December 31, 2011 and $57 million at December 31, 2010. Generally, timberlands that are under contract to sell or are listed for sale through an independent broker or by a taxable REIT subsidiary and are expected to be sold within the next year are considered assets held for sale. The book basis of timberlands that do not meet the held for sale criteria is included in Timber and Timberlands.

Accounting for Equity Method Investments. In 2008, the company contributed 454,000 acres of timberlands located in its Southern Resources Segment to a timberland venture in exchange for a $705 million preferred interest and a $78 million common interest. The company accounts for its interest in the Timberland Venture under the equity method of accounting. See Note 16 of the Notes to Consolidated Financial Statements.

Property, Plant and Equipment. Property, plant and equipment are recorded at cost. Replacements of major units of property are capitalized, and the replaced units are retired. Replacement of minor components of property and repair and maintenance costs are charged to expense as incurred.

The company evaluates its long-lived assets for potential impairment whenever circumstances indicate the book basis of an asset group may not be recoverable. The company considers each of its manufacturing facilities to be a separate asset group based on identifiable cash flows.

All property, plant and equipment other than manufacturing machinery (for lumber, plywood and MDF) are depreciated using the straight-line method over the estimated useful lives of the related assets. Manufacturing machinery and equipment are depreciated on either a straight-line basis or a units-of-production basis, which approximates a straight-line basis. Useful lives are 19 years for land improvements, 20 to 45 years for buildings, and 3 to 20 years for machinery and equipment. Leasehold improvements are depreciated over the lease term or estimated useful life, whichever is shorter. The cost and related accumulated depreciation of property sold or retired are removed from the accounts and any gain or loss is recorded. Depreciation expense, excluding impairment charges, was as follows for the years ended December 31 (in millions):

	2011		2010		2009
Depreciation Expense	$	20	$	19	$	20

Grantor Trusts. The company has a grantor trust that was established for deferred compensation and deferred Plum Creek shares. See Note 10 of the Notes to Consolidated Financial Statements. Deferred compensation assets, which include money market and mutual fund investments, are classified as “trading securities” and are carried at market value. Realized gains and losses and changes in unrealized gains and losses and a corresponding amount of compensation expense are recorded in the Consolidated Statements of Income.

Plum Creek maintains another grantor trust, which the company uses to fund its non-qualified pension plan obligation. See Notes 10 and 12 of the Notes to Consolidated Financial Statements. Money market and mutual fund investments held by this trust are classified as “available for sale securities.” The investments are carried at market values on the company’s Consolidated Balance Sheets. Realized gains and losses are recognized in the Consolidated Statements of Income; changes in unrealized gains and losses are recorded as other comprehensive income or loss, unless an other than temporary impairment has occurred, in which case an impairment loss is recognized in the Consolidated Statements of Income.

Shipping and Handling Costs. Costs incurred for the transportation of timber and manufactured products are included in Cost of Goods Sold.

Accounting for Share-Based Compensation. All share-based payments to employees are recognized in the income statement based on their fair values. The company uses the Black-Scholes-Merton option pricing model to value stock options and uses the grant date fair values, the closing market price for its common stock, to value other common stock awards of restricted stock and restricted stock units. The company also grants share-based awards that are classified and accounted for as liabilities. These awards are valued using a Monte Carlo simulation.

Other Operating Income. Periodically the company will recognize gains and losses from miscellaneous asset sales, litigation settlements and other items which are reported in our Consolidated Statements of Income as Other Operating Income (Expense), net. See Note 19 of the Notes to Consolidated Financial Statements.

Reclassifications. Certain prior year amounts have been reclassified to conform to the 2011 presentation. The reclassifications had no impact on operating income or net income.

New Accounting Pronouncements

Presentation of Comprehensive Income. In 2011, the FASB issued a new accounting standard requiring entities to present net income and other comprehensive income in either a single continuous statement or in two separate, but consecutive, statements of net income and comprehensive income. The new requirements do not change which components of comprehensive income are recognized in net income or in other comprehensive income, or when an item of other comprehensive income is recognized or must be reclassified to net income. During 2011, the FASB also deferred a requirement that entities present separately reclassification adjustments on the face of the income statement.

While the new requirements are effective for public entities in fiscal years (including interim periods) beginning after December 15, 2011, as permitted by the standard, the company has elected adoption at December 31, 2011. As a result, the financial statements include separate Consolidated Statements of Comprehensive Income with retrospective application to previously presented periods.

PLUM CREEK TIMBERLANDS L P [Member]

Accounting Policies

ACCOUNTING POLICIES

General. Plum Creek Timberlands, L.P. is a Delaware Limited Partnership and a wholly-owned subsidiary of Plum Creek Timber Company, Inc. (“Parent”), a Delaware Corporation and a real estate investment trust, or “REIT”. References herein to “the Operating Partnership,” “we,” “us,” or “our” relate to Plum Creek Timberlands, L.P. and all of its wholly-owned consolidated subsidiaries; references to “Plum Creek” or “Parent” relate to Plum Creek Timber Company, Inc. and all of its wholly-owned consolidated subsidiaries.

At December 31, 2011, the Operating Partnership owned and managed approximately 6.6 million acres of timberlands in the Northwest, Southern and Northeast United States, and owned 8 wood product conversion facilities in the Northwest United States (2 of which have been curtailed). Included in the 6.6 million acres are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. In addition, the Operating Partnership has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller acreage transactions over the near and medium term. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Basis of Presentation. The consolidated financial statements of the Operating Partnership include the accounts of Plum Creek Timberlands, L.P. and its subsidiaries. The Operating Partnership is 100% owned by Plum Creek. Plum Creek has no assets or liabilities other than its direct and indirect ownership interests in Plum Creek Timberlands, L.P. and its interest in Plum Creek Ventures I, LLC (“PC Ventures”), a 100% owned subsidiary of Plum Creek. The Parent has no operations other than its investment in these subsidiaries and transactions in its own equity, such as the issuance and/or repurchase of common stock and the receipt of proceeds from stock option exercises. Intercompany transactions and accounts between Plum Creek Timberlands, L.P. and its subsidiaries have been eliminated in consolidation. All transactions are denominated in United States dollars.

Use of Estimates. The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Customer Concentrations. The following table sets forth the annual revenues from the Operating Partnership’s largest customer as a percentage of total annual revenues for the years ended December 31:

	2011		2010		2009
Customer Revenue as a Percentage of Total Revenues	7	%	7	%	7	%

If adverse market conditions for wood products were to continue or worsen, the loss of this customer could have a significant effect on the Operating Partnership’s results of operations.

Product Concentrations. Sales of the Operating Partnership’s timber and wood products are dependent upon the economic conditions of the housing, repair and remodeling, industrial, and pulp and paper industries. Sales of the Operating Partnership’s timberlands are dependent upon the general economic conditions in the United States, interest rates and the availability of buyer financing from financial institutions, not-for-profit organizations and government sources. As a result of these product concentrations, continued or worsening conditions in these markets could have a significant impact on the Operating Partnership’s results of operations.

Revenue Recognition. Timber sales revenues are recognized when legal ownership and the risk of loss transfers to the purchaser and the quantity sold is determinable. The Operating Partnership sells timber under delivered log agreements as well as through sales of standing timber (or “stumpage”). For delivered sales, revenue, which includes amounts billed for shipping and handling (logging and hauling of timber), is recognized when the log is delivered to the customer. Stumpage is sold using pay-as-cut or timber deed sale agreements. Under a pay-as-cut sales contract, the purchaser acquires the right to harvest specified timber on a tract, at an agreed upon price per unit. The sale and any related advances are recognized as revenue as the purchaser harvests the timber on the tract. Under a timber deed sale, the buyer agrees to purchase and harvest specified timber on a tract of land over the term of the contract (usually less than 18 months). Unlike a pay-as-cut sales contract, risk of loss and title to the trees transfer to the buyer when the contract is signed. The buyer also pays the full purchase price when the contract is signed. Revenue from a timber deed sale is recognized when the contract is signed.

Revenues generated from the sale of lumber, plywood, medium density fiberboard (“MDF”) and related by-products (primarily wood chips), and amounts billed for shipping and handling, are recognized at the time of delivery.

Revenue from the sale of real estate is recognized when the sale has been consummated, the buyer’s initial and ongoing payments are adequate, the risks and rewards of owning the property have transferred to the buyer, and we have no continuing involvement with the property. For substantially all of our real estate sales, we receive the entire consideration in cash at closing (“Cash Sales”). Also at closing, the risks and rewards of ownership transfer to the buyer and we do not have a continuing involvement in our properties after they are sold. We recognize revenue under the full accrual method for Cash Sales of real estate when the sale is consummated (i.e., at closing). On occasion, we receive a portion of the real estate sale consideration in the form of a note receivable. These sales ("Credit Sales") as a percentage of total real estate sales were as follows for the years ended December 31:

	2011		2010		2009
Credit Sales as a Percentage of Total Real Estate Sales	0	%	3	%	3	%

Under these circumstances, we use the full accrual method of recognizing revenue if the buyer’s initial and continuing investment is adequate; otherwise, revenue is generally recognized under the cost recovery method or deposit method, depending on the circumstances. Revenue from real estate development projects is generally recognized under the full accrual method of accounting because sales generally do not commence until the project is completed. Broker commissions and closing costs of our Real Estate Segment are included in Cost of Goods Sold.

We occasionally sell timberlands to a single buyer under a multi-period contract covering a series of prescheduled closings and/or options. Under these multi-period contracts, once title and risk of loss have transferred to the buyer for individual properties, the properties sold cannot be returned for a refund. However, deposits for future closings under multi-period contracts may be refunded under certain circumstances. The Operating Partnership treats each closing under a multi-period arrangement as a separate sale. Revenue in connection with a multi-period contract is generally recognized at closing equal to the lesser of the non-refundable consideration received or an allocation of total consideration based on fair value.

Furthermore, we may occasionally pursue a non-cash exchange of timberlands. Revenue is recognized in connection with non-cash exchanges of timberlands when the exchanges are considered to have commercial substance. We will recognize revenue to the extent of the fair value of the timberlands received. Revenues from non-cash exchanges of timberlands were $25 million in 2009.

Revenue generated from real estate sales includes the sale of higher value timberlands, non-strategic timberlands and large blocks of timberlands. In some of these transactions, the Operating Partnership sells timberlands that qualify for like-kind (tax-deferred) exchange treatment under the Internal Revenue Code. Substantially all of these sales involve a third party intermediary, whereby the third party intermediary receives proceeds related to the property sold and then reinvests the proceeds in like-kind property. The proceeds are recorded as revenue when the third party intermediary receives them. See “Like-Kind Exchanges”.

Cash and Cash Equivalents. All highly liquid investments purchased with an original maturity of three months or less are considered to be cash equivalents. Substantially all of the cash and cash equivalents are invested in money market funds.

Accounts Receivable. Accounts receivable is presented net of an allowance for doubtful accounts of $0.4 million at December 31, 2011 and $0.4 million at December 31, 2010. Accounts are deemed past due based on payment terms. The allowance for doubtful accounts represents management’s estimate and is based on historical losses, recent collection history, credit ratings of individual customers and existing economic conditions. Delinquent accounts are charged against the allowance for doubtful accounts to the extent and at the time they are deemed uncollectible.

Like-Kind Exchanges. The Operating Partnership may enter into like-kind (tax-deferred) exchange transactions to acquire and sell assets, principally timberlands. These transactions may include both forward (timberlands sold, followed by reinvestment of proceeds to acquire timberlands) and reverse (timberlands purchased, followed by receipt of proceeds from timberland sales) like-kind exchanges. The Operating Partnership uses a qualified escrow account to facilitate like-kind exchange transactions. Funds from forward like-kind exchange transactions are restricted from being used until the funds are either successfully reinvested in timber and timberlands or the exchange fails and the proceeds are distributed to the Operating Partnership.

Inventories. Logs, work-in-process and finished goods are stated at the lower of cost or market using the average cost method. A separate lower of cost or market analysis is prepared for each product line (i.e. lumber, plywood and MDF). Net realizable value is determined based on actual selling prices at the end of the accounting period. Losses on firm purchase commitments for logs are recorded when the related manufactured finished products are expected to be sold at a loss based on current product prices. Supplies inventories are stated at cost. Costs for manufactured inventories include raw materials, labor, supplies, energy, depreciation and production overhead. Cost of log inventories include timber depletion, stumpage, associated logging and harvesting costs, road costs and production overhead.

Timber and Timberlands. Timber (including timber deeds and logging roads) and timberlands (including mineral reserves) are stated at cost less accumulated depletion for timber previously harvested and accumulated road amortization. The Operating Partnership capitalizes timber and timberland purchases along with reforestation costs and other costs associated with the planting and growing of timber, such as site preparation, growing or purchases of seedlings, planting, fertilization, herbicide application and the thinning of tree stands to improve growth. The Operating Partnership presents timber and timberland purchases and the capitalized costs described above under Investing Activities on the Consolidated Statements of Cash Flows. A timber deed, also called timber cutting rights, allows the Operating Partnership to harvest timber on timberlands it does not own over a specific time period (currently less than 10 years) The Operating Partnership capitalizes timber deed acquisitions. The Operating Partnership presents timber deed acquisitions under Operating Activities on the Consolidated Statements of Cash Flows. Timber carrying costs, such as real estate taxes, insect control, wildlife control, leases of timberlands (other than lease payments for the purchase of standing timber, in which case the payments are capitalized) and forest management personnel salaries and fringe benefits, are expensed as incurred. Costs of major roads are capitalized and amortized over 30 years. Costs for roads that are built to access multiple logging sites over numerous years are capitalized and amortized over 6 years. Costs for roads built to access a single logging site are expensed as incurred.

Costs attributable to timber harvested, or depletion, are charged against income as trees are harvested. Depletion rates are determined annually based on the relationship between net carrying value of the timber plus certain capitalizable silviculture costs expected to be incurred over the harvest cycle and total timber volume estimated to be available over the harvest cycle. The depletion rate does not include an estimate for either future reforestation costs associated with a stand’s final harvest or future volume in connection with the replanting of a stand subsequent to its final harvest. Net carrying value of the timber and timberlands is used to compute the gain or loss in connection with timberland sales.

Higher and Better Use Timberlands / Real Estate Development. We estimate that included in the Operating Partnership’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber. Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries.

Costs associated with a specific real estate project are capitalized when management estimates that it is probable that a project will be successful. Both external and internal expenditures directly associated with the specific real estate project are capitalized. The Operating Partnership will capitalize improvements and other development costs, including interest costs and property taxes, during the development period. General real estate development costs not related to a specific project and costs incurred before management has concluded that it is probable that a project will be successful (e.g. investigatory costs) are expensed as incurred. For real estate projects with multiple parcels, the Operating Partnership determines the cost of the individual lots sold by allocating the historical cost of the land, timber, development and common construction costs on a relative sales value.

Properties developed by the Operating Partnership will generally be low-intensity development limited to activities associated with obtaining entitlements. Capitalized real estate development costs, including the book basis in the related timber and timberlands associated with these developments, were $13 million at December 31, 2011. Substantially all of these properties are expected to be sold beyond one year and are included in Other Assets (non-current). Total capitalized real estate development costs at December 31, 2010 were $14 million.

Larger and more complicated projects needing more invested capital may be developed through third party ventures. These projects have a longer timeframe and are not expected to be sold in the near term. The capitalized development costs for these projects and the book basis of the related timber and timberlands are included in Timber and Timberlands as they are still managed for timber operations. At December 31, 2011, approximately $18 million of costs have been capitalized for a single project that has been approved by a state commission but is being appealed in court by groups opposed to the project. While not expected, if the approval is reversed, some or all of these capitalized costs could be written off in the next twelve months.

The book basis of timberlands that are considered held for sale are presented in the Consolidated Balance Sheet as Assets Held for Sale. The total book basis for assets held for sale was $103 million at December 31, 2011 and $57 million at December 31, 2010. Generally, timberlands that are under contract to sell or are listed for sale through an independent broker or by a taxable REIT subsidiary and are expected to be sold within the next year are considered assets held for sale. The book basis of timberlands that do not meet the held for sale criteria is included in Timber and Timberlands.

Accounting for Equity Method Investments. In 2008, a subsidiary of the Operating Partnership, Plum Creek Timber Operations I, LLC (“PC Member”), contributed 454,000 acres of timberlands located in its Southern Resources Segment to a timberland venture in exchange for a $705 million preferred interest and a $78 million common interest. The Operating Partnership accounts for its interest in the Timberland Venture under the equity method of accounting. See Note 13 of the Notes to Consolidated Financial Statements.

Property, Plant and Equipment. Property, plant and equipment are recorded at cost. Replacements of major units of property are capitalized, and the replaced units are retired. Replacement of minor components of property and repair and maintenance costs are charged to expense as incurred.

The Operating Partnership evaluates its long-lived assets for potential impairment whenever circumstances indicate the book basis of an asset group may not be recoverable. The Operating Partnership considers each of its manufacturing facilities to be a separate asset group based on identifiable cash flows.

All property, plant and equipment other than manufacturing machinery (for lumber, plywood and MDF) are depreciated using the straight-line method over the estimated useful lives of the related assets. Manufacturing machinery and equipment are depreciated on either a straight-line basis or a units-of-production basis, which approximates a straight-line basis. Useful lives are 19 years for land improvements, 20 to 45 years for buildings, and 3 to 20 years for machinery and equipment. Leasehold improvements are depreciated over the lease term or estimated useful life, whichever is shorter. The cost and related accumulated depreciation of property sold or retired are removed from the accounts and any gain or loss is recorded.

Depreciation expense, excluding impairment charges, was as follows for the years ended December 31 (in millions):

	2011		2010		2009
Depreciation Expense	$	20	$	19	$	20

Grantor Trusts. The Operating Partnership has a grantor trust that was established for deferred compensation and deferred Plum Creek shares. See Note 7 of the Notes to Consolidated Financial Statements. Deferred compensation assets, which include money market and mutual fund investments, are classified as “trading securities” and are carried at market value. Realized gains and losses and changes in unrealized gains and losses and a corresponding amount of compensation expense are recorded in the Consolidated Statements of Income.

The Operating Partnership maintains another grantor trust, which the Operating Partnership uses to fund its non-qualified pension plan obligation. See Notes 7 and 9 of the Notes to Consolidated Financial Statements. Money market and mutual fund investments held by this trust are classified as “available for sale securities.” The investments are carried at market values on the Operating Partnership’s Consolidated Balance Sheets. Realized gains and losses are recognized in the Consolidated Statements of Income; changes in unrealized gains and losses are recorded as other comprehensive income or loss, unless an other than temporary impairment has occurred, in which case an impairment loss is recognized in the Consolidated Statements of Income.

Shipping and Handling Costs. Costs incurred for the transportation of timber and manufactured products are included in Cost of Goods Sold.

Accounting for Share-Based Compensation. All share-based payments to employees are recognized in the income statement based on their fair values. The Black-Scholes-Merton option pricing model is used to value Plum Creek stock options and the grant date fair values, the closing market price for Plum Creek’s common stock, are used to value other Plum Creek common stock awards of restricted stock and restricted stock units. Share-based awards that are classified and accounted for as liabilities also may be granted to any officer, director, employee, consultant, or advisor of the Operating Partnership. These awards are valued using a Monte Carlo simulation.

Other Operating Income. Periodically the Operating Partnership will recognize gains and losses from miscellaneous asset sales, litigation settlements and other items which are reported in our Consolidated Statements of Income as Other Operating Income (Expense), net. See Note 16 of the Notes to Consolidated Financial Statements.

Reclassifications. Certain prior year amounts have been reclassified to conform to the 2011 presentation. The reclassifications had no impact on operating income or net income.

New Accounting Pronouncements

Presentation of Comprehensive Income. In 2011, the FASB issued a new accounting standard requiring entities to present net income and other comprehensive income in either a single continuous statement or in two separate, but consecutive, statements of net income and comprehensive income. The new requirements do not change which components of comprehensive income are recognized in net income or in other comprehensive income, or when an item of other comprehensive income is recognized or must be reclassified to net income. During 2011, the FASB also deferred a requirement that entities present separately reclassification adjustments on the face of the income statement.

While the new requirements are effective for public entities in fiscal years (including interim periods) beginning after December 15, 2011, as permitted by the standard, the Operating Partnership has elected adoption at December 31, 2011. As a result, the financial statements include separate Consolidated Statements of Comprehensive Income with retrospective application to previously presented periods.

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Segment Information (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			3 Months Ended								12 Months Ended			3 Months Ended								12 Months Ended																	36 Months Ended	12 Months Ended		36 Months Ended	12 Months Ended																										12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member] acre	Sep. 30, 2011 PLUM CREEK TIMBER CO INC [Member]	Jun. 30, 2011 PLUM CREEK TIMBER CO INC [Member]	Mar. 31, 2011 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Sep. 30, 2010 PLUM CREEK TIMBER CO INC [Member]	Jun. 30, 2010 PLUM CREEK TIMBER CO INC [Member]	Mar. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member] acre	Dec. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2009 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member] acre	Sep. 30, 2011 PLUM CREEK TIMBERLANDS L P [Member]	Jun. 30, 2011 PLUM CREEK TIMBERLANDS L P [Member]	Mar. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Sep. 30, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Jun. 30, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Mar. 31, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member] acre	Dec. 31, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2009 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Real Estate [Member] PLUM CREEK TIMBER CO INC [Member]		Dec. 31, 2010 Real Estate [Member] PLUM CREEK TIMBER CO INC [Member]		Dec. 31, 2009 Real Estate [Member] PLUM CREEK TIMBER CO INC [Member]		Dec. 31, 2011 Real Estate [Member] PLUM CREEK TIMBERLANDS L P [Member]		Dec. 31, 2010 Real Estate [Member] PLUM CREEK TIMBERLANDS L P [Member]		Dec. 31, 2009 Real Estate [Member] PLUM CREEK TIMBERLANDS L P [Member]		Dec. 31, 2010 Real Estate [Member] Montana Multi-Phase Sales Transaction [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2009 Real Estate [Member] Montana Multi-Phase Sales Transaction [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Real Estate [Member] Montana Multi-Phase Sales Transaction [Member] PLUM CREEK TIMBER CO INC [Member] acre	Dec. 31, 2010 Real Estate [Member] Montana Multi-Phase Sales Transaction [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2009 Real Estate [Member] Montana Multi-Phase Sales Transaction [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Real Estate [Member] Montana Multi-Phase Sales Transaction [Member] PLUM CREEK TIMBERLANDS L P [Member] acre	Dec. 31, 2011 Manufactured Products [Member] PLUM CREEK TIMBER CO INC [Member]		Dec. 31, 2010 Manufactured Products [Member] PLUM CREEK TIMBER CO INC [Member]		Dec. 31, 2009 Manufactured Products [Member] PLUM CREEK TIMBER CO INC [Member]		Dec. 31, 2011 Manufactured Products [Member] PLUM CREEK TIMBERLANDS L P [Member]		Dec. 31, 2010 Manufactured Products [Member] PLUM CREEK TIMBERLANDS L P [Member]		Dec. 31, 2009 Manufactured Products [Member] PLUM CREEK TIMBERLANDS L P [Member]		Dec. 31, 2011 Other Segment [Member] PLUM CREEK TIMBER CO INC [Member]		Dec. 31, 2010 Other Segment [Member] PLUM CREEK TIMBER CO INC [Member]		Dec. 31, 2009 Other Segment [Member] PLUM CREEK TIMBER CO INC [Member]		Dec. 31, 2011 Other Segment [Member] PLUM CREEK TIMBERLANDS L P [Member]		Dec. 31, 2010 Other Segment [Member] PLUM CREEK TIMBERLANDS L P [Member]		Dec. 31, 2009 Other Segment [Member] PLUM CREEK TIMBERLANDS L P [Member]		Dec. 31, 2010 Other Segment [Member] Natural Gas West Virginia [Member] PLUM CREEK TIMBER CO INC [Member] acre	Dec. 31, 2008 Other Segment [Member] Natural Gas West Virginia [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Other Segment [Member] Natural Gas West Virginia [Member] PLUM CREEK TIMBERLANDS L P [Member] acre	Dec. 31, 2008 Other Segment [Member] Natural Gas West Virginia [Member] PLUM CREEK TIMBERLANDS L P [Member]
Timber And Timberlands Acres Owned				6,600,000								6,600,000			6,600,000								6,600,000
Higher Value Timberlands Which Are Expected To Be Sold And Or Developed Acres				900,000								900,000			900,000								900,000
Land Expect To Sell For Recreational Uses In Acres				700,000								700,000			700,000								700,000
LandExpectToSellForConservationInAcres				100,000								100,000			100,000								100,000
LandDesignatedWithDevelopmentPotentialInAcres				100,000								100,000			100,000								100,000
Non Strategic Timberlands Which Are Expected To Be Sold Acres				300,000								300,000			300,000								300,000
Asset Impairment Charges																										$ 1		$ 1		$ 3		$ 1		$ 1		$ 3												$ 10						$ 10
Non Cash Exchange Revenue														25											25											25
Book Value Of Timberlands Disposed Of In Noncash Exchange																														25						25
Total Acres Sold From Three Phase Sale																																								310,000			310,000
Land Sales												301	336	486									301	336	486													89	250		89	250
Operating Income (Loss)				83	69	63	60	95	51	56	95	275	297	299	83	69	63	60	95	51	56	95	275	297	299	195	[1]	180	[1]	278	[1]	195	[2]	180	[2]	278	[2]	37	162		37	162		15	[3]	24	[3]	(23)	[3]	15	[4]	24	[4]	(23)	[4]	21	[5]	23	[5]	17	[5]	21	[6]	23	[6]	17	[6]
Gain (Loss) on Sale of Property Plant Equipment																																														2						2
Gain on settlement of a dispute that related to certain mineral rights																																																								2						2
Gain on contract termination																																																										5						5
Proceeds from sale of land use rights																																																																				21		21
Acres Of Land Rights Sold																																																																				110,000		110,000
Gain on Sale of Properties, net of tax	0	11	0								11	0	11	0								11	0	11	0																																											11		11
Deferred revenue				20				22				20	22		20				22				20	22																																												10	12	10	12
Unallocated corporate depreciation												$ 4	$ 4	$ 4									$ 4	$ 4	$ 4

[1] (A) The company recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.During 2009, the company completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.During 2008, the company negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

[2] The Operating Partnership recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.During 2009, the Operating Partnership completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.During 2008, the Operating Partnership negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

[3] (B) During 2010, the company sold certain lumber manufacturing assets for a gain of $2 million. The gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

[4] During 2010, the Operating Partnership sold certain lumber manufacturing assets for a gain of $2 million. The gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

[5] During 2011, the company received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.During 2010, the company agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income. During 2010, the company received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The company allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term

[6] During 2011, the Operating Partnership received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.During 2010, the Operating Partnership agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income. During 2010, the Operating Partnership received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The Operating Partnership allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term.

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Income Taxes (Schedule of Reconciliation of Income Tax Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Provision for Income Taxes on Income from Continuing Operations Computed at the Federal Statutory Tax Rate of 35%	$ 67	$ 71	$ 72
REIT Income not Subject to Federal Tax	(68)	(64)	(86)
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	0	(1)	(3)
Change to Valuation Allowance	3	0	0
State Income Tax Expense (Benefit), net of Federal Benefit	(1)	0	(2)
Reversal of Accrued Built-in Gains	0	0	(5)
Tax Audit Settlements	1	0	0
Permanent Book-Tax Differences	(3)	(5)	(7)
Provision (Benefit) for Income Taxes	(1)	1	(31)
PLUM CREEK TIMBERLANDS L P [Member]
Provision for Income Taxes on Income from Continuing Operations Computed at the Federal Statutory Tax Rate of 35%	67	71	72
REIT Income not Subject to Federal Tax	(68)	(64)	(86)
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	0	(1)	(3)
Change to Valuation Allowance	3	0	0
State Income Tax Expense (Benefit), net of Federal Benefit	(1)	0	(2)
Reversal of Accrued Built-in Gains	0	0	(5)
Tax Audit Settlements	1	0	0
Permanent Book-Tax Differences	(3)	(5)	(7)
Provision (Benefit) for Income Taxes	$ (1)	$ 1	$ (31)

XML

Stockholders' Equity (Tables) (PLUM CREEK TIMBER CO INC [Member])

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Share Repurchase Program Disclosure [Table Text Block]

The table below summarizes the share repurchases pursuant to this program for the years ended December 31:

	2011		2010		2009
Shares of Common Stock (in millions)	0.7		1.4		3.3
Total Cost of Shares (in millions)	$	25	$	50	$	87
Average Cost per Share	$	34.84	$	36.37	$	26.57

Schedule of Comprehensive Income (Loss) [Table Text Block]

Comprehensive income was as follows for the years ended December 31 (in millions):

	Pretax Amount			Tax Expense (Benefit)			After-Tax Amount
December 31, 2009
Net Income							$	236
Unrealized Holding Gains	$	5		$	—		5
Defined Benefit Plans:
Actuarial Gain	3			1			2
Reclassification to Net Income	7			2			5
Total Comprehensive Income							$	248
December 31, 2010
Net Income							$	213
Unrealized Holding Gains	$	2		$	—		2
Defined Benefit Plans:
Actuarial Gain	6			2			4
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	221
December 31, 2011
Net Income							$	193
Unrealized Holding Losses	$	(1	)	$	—		(1		)
Defined Benefit Plans:
Actuarial Loss	(31		)	(6		)	(25		)
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	169

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The components of accumulated other comprehensive income, net of tax, were as follows at December 31 (in millions):

	2011			2010
Net Unrealized Holding Gains	$	6		$	7
Defined Benefit Plans:
Net Loss	(41		)	(18		)
	$	(35	)	$	(11	)

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Subsequent Events (PLUM CREEK TIMBER CO INC [Member])

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Subsequent Events

SUBSEQUENT EVENTS

Quarterly Dividend. On February 7, 2012, the Board of Directors authorized the company to make a dividend payment of$0.42 per share, or approximately $68 million, which will be paid on March 2, 2012 to stockholders of record on February 17, 2012.

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Segment Information

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Segment Information

SEGMENT INFORMATION

The company is organized into five operating segments based on the nature of the business activities of each component. Each operating segment has a separate management team. The measurement of operating segment results is generally consistent with the presentation of the Consolidated Statements of Income. Intersegment Revenues are recorded at market prices, which are determined at least quarterly, and are eliminated in the consolidated results. Several operating segments have sales outside of the U.S. (see Export Revenues), but the company does not hold any long-lived foreign assets. These operating segments represent the company’s five reportable segments, which are: (1) Northern Resources, (2) Southern Resources, (3) Real Estate, (4) Manufactured Products and (5) Other.

Northern Resources Segment. The Northern Resources Segment consists of timberlands located in Maine, Michigan, Montana, New Hampshire, Oregon, Vermont, Washington, West Virginia and Wisconsin. The Northern Resources Segment grows timber for sale primarily in domestic regional markets. Additionally, some logs are sold in export markets, mainly to China and Canada. The Northern Resources Segment sells softwood and hardwood sawlogs and softwood and hardwood pulpwood. Softwood sawlogs are sold primarily to regional lumber and plywood manufacturers. Logs harvested in Montana are sold mostly to the company’s Manufactured Products Segment (see Intersegment Revenues). Hardwood sawlogs are sold primarily to regional lumber and plywood manufacturers. Softwood and hardwood pulpwood is sold to regional paper and packaging manufacturers.

Southern Resources Segment. The Southern Resources Segment consists of timberlands located in Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina and Texas. The Southern Resources Segment grows timber for sale in domestic regional markets. The Southern Resources Segment sells primarily softwood sawlogs and pulpwood. Softwood sawlogs are sold to regional lumber and plywood manufacturers. Softwood pulpwood is sold to regional paper and packaging manufacturers and also to producers of oriented strand board. Additionally, the Southern Resources Segment leases a portion of our timberlands to third parties on an annual basis for recreational purposes.

Real Estate Segment. The Real Estate Segment consists of sales of higher value timberlands and non-strategic timberlands. We estimate that included in the company’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. The company has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller scale transactions over the near and medium term. In addition to these 300,000 acres, the company may also make sales of non-strategic timberlands in larger scale transactions to commercial timberland buyers as opportunities arise. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries. Properties developed internally by the company will generally be low-intensity development limited to obtaining entitlements. Larger and more complicated projects needing more invested capital may be developed through third party ventures.

Manufactured Products Segment. The Manufactured Products Segment consists of two lumber mills (of which one mill is curtailed until markets improve), two plywood mills, two medium density fiberboard (“MDF”) facilities, one lumber remanufacturing facility in Idaho and one lumber remanufacturing facility in Montana (which is curtailed until markets improve). The lumber facilities produce boards, studs, and dimension lumber and the panel facilities produce high-quality plywood and MDF panels. All of these products are targeted to domestic wood products retailers, home construction, industrial customers, and to a lesser extent, for export primarily to Canada and Mexico. Residual chips that are not used internally may be sold to regional pulp and paper manufacturers. Revenues from manufactured products by product line were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Lumber	$	77	$	75	$	85
Plywood	75		73		62
MDF	121		117		98
Total	$	273	$	265	$	245

Other Segment. The Other Segment consists primarily of income associated with oil and natural gas production, mineral extraction and wind power development, along with communication and transportation rights of way. Some of these activities are conducted through our wholly-owned taxable REIT subsidiaries.

The company evaluates performance of the segments based on operating income before interest, unallocated corporate expenses and taxes. Asset information is not reported by segment, as the company does not produce such information internally.

The tables below present information about reported segments for the years ended December 31 (in millions):

	Northern Resources			Southern Resources		Real Estate(A)		Manufactured Products(B)			Other(C)		Total(D)
2011
External Revenues	$	213		$	359	$	301	$	273		$	21	$	1,167
Intersegment Revenues	20			—		—		—			—		20
Export Revenues	26			—		—		25			—		51
Depreciation, Depletion and Amortization	26			51		2		13			—		92
Basis of Real Estate Sold	—			—		77		—			—		77
Other Operating Gain	—			—		—		—			2		2
Operating Income (Loss)	24			74		195		15			21		329
2010
External Revenues	$	192		$	377	$	336	$	265		$	20	$	1,190
Intersegment Revenues	18			—		—		—			—		18
Export Revenues	14			—		—		24			—		38
Depreciation, Depletion and Amortization	28			50		2		12			—		92
Basis of Real Estate Sold	—			—		132		—			—		132
Other Operating Gain	1			—		—		2			5		8
Operating Income (Loss)	13			107		180		24			23		347
2009
External Revenues	$	198		$	347	$	486	$	245		$	18	$	1,294
Intersegment Revenues	14			—		—		—			—		14
Export Revenues	11			—		—		21			—		32
Depreciation, Depletion and Amortization	30			51		1		23			—		105
Basis of Real Estate Sold	—			—		155		—			—		155
Operating Income (Loss)	(3		)	81		278		(23		)	17		350

^(A)  The company recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.

During 2009, the company completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.

During 2008, the company negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

^(B)  During 2010, the company sold certain lumber manufacturing assets for a gain of $2 million. The gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

^(C)  During 2011, the company received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the company agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the company received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The company allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term.

^(D) Consolidated depreciation, depletion and amortization includes unallocated corporate depreciation of $4 million for 2011, 2010 and 2009.

A reconciliation of total segment operating income to income before income taxes is presented below for the years ended December 31 (in millions):

	2011			2010			2009
Total Segment Operating Income	$	329		$	347		$	350
Corporate and Other Unallocated Expenses	(55		)	(51		)	(51		)
Other Unallocated Operating Income (Expense), net	1			1			—
Operating Income	275			297			299
Equity Earnings from Timberland Venture	56			57			55
Total Interest Expense, net	(139		)	(138		)	(147		)
Gain (Loss) on Extinguishment of Debt	—			(13		)	(2		)
Income before Income Taxes	$	192		$	203		$	205

PLUM CREEK TIMBERLANDS L P [Member]

Segment Information

SEGMENT INFORMATION

The Operating Partnership is organized into five operating segments based on the nature of the business activities of each component. Each operating segment has a separate management team. The measurement of operating segment results is generally consistent with the presentation of the Consolidated Statements of Income. Intersegment Revenues are recorded at market prices, which are determined at least quarterly, and are eliminated in the consolidated results. Several operating segments have sales outside of the U.S. (see Export Revenues), but the Operating Partnership does not hold any long-lived foreign assets. These operating segments represent the Operating Partnership’s five reportable segments, which are: (1) Northern Resources, (2) Southern Resources, (3) Real Estate, (4) Manufactured Products and (5) Other.

Northern Resources Segment. The Northern Resources Segment consists of timberlands located in Maine, Michigan, Montana, New Hampshire, Oregon, Vermont, Washington, West Virginia and Wisconsin. The Northern Resources Segment grows timber for sale primarily in domestic regional markets. Additionally, some logs are sold in export markets, mainly to China and Canada. The Northern Resources Segment sells softwood and hardwood sawlogs and softwood and hardwood pulpwood. Softwood sawlogs are sold primarily to regional lumber and plywood manufacturers. Logs harvested in Montana are sold mostly to the Operating Partnership’s Manufactured Products Segment (see Intersegment Revenues). Hardwood sawlogs are sold primarily to regional lumber and plywood manufacturers. Softwood and hardwood pulpwood is sold to regional paper and packaging manufacturers.

Southern Resources Segment. The Southern Resources Segment consists of timberlands located in Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina and Texas. The Southern Resources Segment grows timber for sale in domestic regional markets. The Southern Resources Segment sells primarily softwood sawlogs and pulpwood. Softwood sawlogs are sold to regional lumber and plywood manufacturers. Softwood pulpwood is sold to regional paper and packaging manufacturers and also to producers of oriented strand board. Additionally, the Southern Resources Segment leases a portion of our timberlands to third parties on an annual basis for recreational purposes.

Real Estate Segment. The Real Estate Segment consists of sales of higher value timberlands and non-strategic timberlands. We estimate that included in the Operating Partnership’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. The Operating Partnership has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller scale transactions over the near and medium term. In addition to these 300,000 acres, the Operating Partnership may also make sales of non-strategic timberlands in larger scale transactions to commercial timberland buyers as opportunities arise. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries. Properties developed internally by the Operating Partnership will generally be low-intensity development limited to obtaining entitlements. Larger and more complicated projects needing more invested capital may be developed through third party ventures.

Manufactured Products Segment. The Manufactured Products Segment consists of two lumber mills (of which one mill is curtailed until markets improve), two plywood mills, two medium density fiberboard (“MDF”) facilities, one lumber remanufacturing facility in Idaho and one lumber remanufacturing facility in Montana (which is curtailed until markets improve). The lumber facilities produce boards, studs, and dimension lumber and the panel facilities produce high-quality plywood and MDF panels. All of these products are targeted to domestic wood products retailers, home construction, industrial customers, and to a lesser extent, for export primarily to Canada and Mexico. Residual chips that are not used internally may be sold to regional pulp and paper manufacturers. Revenues from manufactured products by product line were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Lumber	$	77	$	75	$	85
Plywood	75		73		62
MDF	121		117		98
Total	$	273	$	265	$	245

Other Segment. The Other Segment consists primarily of income associated with oil and natural gas production, mineral extraction and wind power development, along with communication and transportation rights of way. Some of these activities are conducted through our wholly-owned taxable REIT subsidiaries.

The Operating Partnership evaluates performance of the segments based on operating income before interest, unallocated corporate expenses and taxes. Asset information is not reported by segment, as the Operating Partnership does not produce such information internally.

The tables below present information about reported segments for the years ended December 31 (in millions):

	Northern Resources			Southern Resources		Real Estate(A)		Manufactured Products(B)			Other(C)		Total(D)
2011
External Revenues	$	213		$	359	$	301	$	273		$	21	$	1,167
Intersegment Revenues	20			—		—		—			—		20
Export Revenues	26			—		—		25			—		51
Depreciation, Depletion and Amortization	26			51		2		13			—		92
Basis of Real Estate Sold	—			—		77		—			—		77
Other Operating Gain	—			—		—		—			2		2
Operating Income (Loss)	24			74		195		15			21		329
2010
External Revenues	$	192		$	377	$	336	$	265		$	20	$	1,190
Intersegment Revenues	18			—		—		—			—		18
Export Revenues	14			—		—		24			—		38
Depreciation, Depletion and Amortization	28			50		2		12			—		92
Basis of Real Estate Sold	—			—		132		—			—		132
Other Operating Gain	1			—		—		2			5		8
Operating Income (Loss)	13			107		180		24			23		347
2009
External Revenues	$	198		$	347	$	486	$	245		$	18	$	1,294
Intersegment Revenues	14			—		—		—			—		14
Export Revenues	11			—		—		21			—		32
Depreciation, Depletion and Amortization	30			51		1		23			—		105
Basis of Real Estate Sold	—			—		155		—			—		155
Operating Income (Loss)	(3		)	81		278		(23		)	17		350

^(A)  The Operating Partnership recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.

During 2009, the Operating Partnership completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.

During 2008, the Operating Partnership negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

^(B)  During 2010, the Operating Partnership sold certain lumber manufacturing assets for a gain of $2 million. The gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

^(C)  During 2011, the Operating Partnership received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the Operating Partnership agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the Operating Partnership received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The Operating Partnership allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term.

^(D)  Consolidated depreciation, depletion and amortization includes unallocated corporate depreciation of $4 million for 2011, 2010 and 2009.

A reconciliation of total segment operating income to income before income taxes is presented below for the years ended December 31 (in millions):

	2011			2010			2009
Total Segment Operating Income	$	329		$	347		$	350
Corporate and Other Unallocated Expenses	(55		)	(51		)	(51		)
Other Unallocated Operating Income (Expense), net	1			1			—
Operating Income	275			297			299
Equity Earnings from Timberland Venture	56			57			55
Interest Expense, net	(81		)	(80		)	(89		)
Gain (Loss) on Extinguishment of Debt	—			(13		)	(2		)
Income before Income Taxes	$	250		$	261		$	263

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Share-Based Compensation Plans (Stock Option Plan Activity, Restricted Stock Awards Activity, Restricted Stock Unit Activity, Value Management Awards Activity) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock Options [Member] | PLUM CREEK TIMBER CO INC [Member]
Stock Options Outstanding at Beginning of Year	3,291,305
Weighted Average Exercise Price for Stock Options Outstanding at Beginning of Year	$ 35.59
Granted Shares Subject to Options	579,350
Granted Weighted- Average Exercise Price	$ 41.55
Exercised/Surrendered Shares Subject to Options	(327,280)
Exercised/Surrendered Weighted- Average Exercise Price	$ 30.52
Cancelled/Forfeited Shares Subject to Options	(2,450)
Cancelled/Forfeited Weighted-Average Exercise Price	$ 38.33
Stock Options Outstanding at End of Year	3,540,925
Weighted Average Exercise Price for Stock Options Outstanding at End of Year	$ 37.03
Outstanding, Weighted- Average Remaining Contractual Life (Years)	5.9
Outstanding, Aggregate Intrinsic Value (Millions)	$ 6
Vested or Expected to Vest, Shares Subject to Options	3,246,281
Vested or Expected to Vest, Weighted- Average Exercise Price	$ 36.90
Vested or Expected to Vest, Weighted- Average Remaining Contractual Life (Years)	5.8
Vested or Expected to Vest, Aggregate Intrinsic Value (Millions)	6
Exercisable, Shares Subject to Options	2,164,465
Exercisable, Weighted- Average Exercise Price	$ 36.23
Exercisable, Weighted- Average Remaining Contractual Life (Years)	4.5
Exercisable, Aggregate Intrinsic Value (Millions)	5
Stock Options [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Stock Options Outstanding at Beginning of Year	3,291,305
Weighted Average Exercise Price for Stock Options Outstanding at Beginning of Year	$ 35.59
Granted Shares Subject to Options	579,350
Granted Weighted- Average Exercise Price	$ 41.55
Exercised/Surrendered Shares Subject to Options	(327,280)
Exercised/Surrendered Weighted- Average Exercise Price	$ 30.52
Cancelled/Forfeited Shares Subject to Options	(2,450)
Cancelled/Forfeited Weighted-Average Exercise Price	$ 38.33
Stock Options Outstanding at End of Year	3,540,925
Weighted Average Exercise Price for Stock Options Outstanding at End of Year	$ 37.03
Outstanding, Weighted- Average Remaining Contractual Life (Years)	5.9
Outstanding, Aggregate Intrinsic Value (Millions)	6
Vested or Expected to Vest, Shares Subject to Options	3,246,281
Vested or Expected to Vest, Weighted- Average Exercise Price	$ 36.90
Vested or Expected to Vest, Weighted- Average Remaining Contractual Life (Years)	5.8
Vested or Expected to Vest, Aggregate Intrinsic Value (Millions)	6
Exercisable, Shares Subject to Options	2,164,465
Exercisable, Weighted- Average Exercise Price	$ 36.23
Exercisable, Weighted- Average Remaining Contractual Life (Years)	4.5
Exercisable, Aggregate Intrinsic Value (Millions)	5
Restricted Stock Units (RSUs) [Member] | PLUM CREEK TIMBER CO INC [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	4.0	3.0	2.0
Beginning Balance	247,866
Beginning Balance Weighted- Average Grant Date Fair Value	$ 37.09
Granted	103,760
Granted Weighted- Average Grant Date Fair Value	$ 41.45	$ 35.27	$ 33.73
Vested	(107,386)
Vested Weighted- Average Grant Date Fair Value	$ 38.66
Forfeited	(440)
Forfeited Weighted- Average Grant Date Fair Value	$ 38.34
Ending Balance	243,800	247,866
Ending Balance Weighted- Average Grant Date Fair Value	$ 38.25	$ 37.09
Restricted Stock Units (RSUs) [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	4.0	3.0	2.0
Beginning Balance	247,866
Beginning Balance Weighted- Average Grant Date Fair Value	$ 37.09
Granted	103,760
Granted Weighted- Average Grant Date Fair Value	$ 41.45	$ 35.27	$ 33.73
Vested	(107,386)
Vested Weighted- Average Grant Date Fair Value	$ 38.66
Forfeited	(440)
Forfeited Weighted- Average Grant Date Fair Value	$ 38.34
Ending Balance	243,800	247,866
Ending Balance Weighted- Average Grant Date Fair Value	$ 38.25	$ 37.09
Restricted Stock [Member] | PLUM CREEK TIMBER CO INC [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	0.7	0.6	0.6
Beginning Balance	0
Beginning Balance Weighted- Average Grant Date Fair Value	$ 0
Granted	16,000
Granted Weighted- Average Grant Date Fair Value	$ 41.99	$ 35.60	$ 31.32
Vested	(16,000)
Vested Weighted- Average Grant Date Fair Value	$ 41.99
Forfeited	0
Forfeited Weighted- Average Grant Date Fair Value	$ 0
Ending Balance	0	0
Ending Balance Weighted- Average Grant Date Fair Value	$ 0	$ 0
Restricted Stock [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	$ 0.7	$ 0.6	$ 0.6
Beginning Balance	0
Beginning Balance Weighted- Average Grant Date Fair Value	$ 0
Granted	16,000
Granted Weighted- Average Grant Date Fair Value	$ 41.99	$ 35.60	$ 31.32
Vested	(16,000)
Vested Weighted- Average Grant Date Fair Value	$ 41.99
Forfeited	0
Forfeited Weighted- Average Grant Date Fair Value	$ 0
Ending Balance	0	0
Ending Balance Weighted- Average Grant Date Fair Value	$ 0	$ 0
Value Management Awards [Member] | PLUM CREEK TIMBER CO INC [Member]
Beginning Balance	211,080
Granted Awards	80,730
Awards Paid	(64,545)
Forfeited Awards	(400)
Ending Balance	226,865
Value Management Awards [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Beginning Balance	211,080
Granted Awards	80,730
Awards Paid	(64,545)
Forfeited Awards	(400)
Ending Balance	226,865

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Inventories (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Raw Materials (primarily logs)	$ 10	$ 12
Work-In-Process	1	1
Finished Goods	24	24
Total before Supplies	35	37
Supplies	13	12
Total	48	49
PLUM CREEK TIMBERLANDS L P [Member]
Raw Materials (primarily logs)	10	12
Work-In-Process	1	1
Finished Goods	24	24
Total before Supplies	35	37
Supplies	13	12
Total	$ 48	$ 49

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Partners' Capital (Tables) (PLUM CREEK TIMBERLANDS L P [Member])

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBERLANDS L P [Member]

Schedule of Comprehensive Income (Loss) [Table Text Block]

Comprehensive income was as follows for the years ended December 31 (in millions): 

	Pretax Amount			Tax Expense (Benefit)			After-Tax Amount
December 31, 2009
Net Income before Allocation to Series T-1 Preferred Interest and Partners							$	294
Unrealized Holding Gains	$	5		$	—		5
Defined Benefit Plans:
Actuarial Gain	3			1			2
Reclassification to Net Income	7			2			5
Total Comprehensive Income							$	306
December 31, 2010
Net Income before Allocation to Series T-1 Preferred Interest and Partners							$	271
Unrealized Holding Gains	$	2		$	—		2
Defined Benefit Plans:
Actuarial Gain	6			2			4
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	279
December 31, 2011
Net Income before Allocation to Series T-1 Preferred Interest and Partners							$	251
Unrealized Holding Losses	$	(1	)	$	—		(1		)
Defined Benefit Plans:
Actuarial Gain	(31		)	(6		)	(25		)
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	227

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The components of accumulated other comprehensive income, net of tax, were as follows at December 31 (in millions): 

	2011			2010
Net Unrealized Holding Gains	$	6		$	7
Defined Benefit Plans:
Net Loss	(41		)	(18		)
	$	(35	)	$	(11	)

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Unaudited Selected Quarterly Financial Data

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Unaudited Selected Quarterly Financial Data

UNAUDITED SELECTED QUARTERLY FINANCIAL DATA

(In Millions, Except Per Share Amounts)	1st Quarter  (B)		2nd Quarter		3rd Quarter		4th Quarter  (C)
2011
Revenues	$	275	$	284	$	293	$	315
Gross Profit	85		88		93		112
Operating Income	60		63		69		83
Net Income	38		44		50		61
Net Income per Share—Basic(A)	$	0.23	$	0.27	$	0.31	$	0.38
Net Income per Share—Diluted(A)	$	0.23	$	0.27	$	0.31	$	0.38
2010
Revenues	$	317	$	258	$	259	$	356
Gross Profit	119		73		71		120
Operating Income	95		56		51		95
Income from Continuing Operations	76		35		32		59
Net Income	87		35		32		59
Net Income per Share—Basic(A)	$	0.54	$	0.21	$	0.20	$	0.37
Net Income per Share—Diluted(A)	$	0.54	$	0.21	$	0.20	$	0.37

^(A)  Net income per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly net income per share may not equal the total computed for the year.

^(B)  The company’s 2010 first quarter net income includes an $11 million ($0.07 per diluted share) Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

^(C)  During the fourth quarter of 2010, the company paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

PLUM CREEK TIMBERLANDS L P [Member]

Unaudited Selected Quarterly Financial Data

UNAUDITED SELECTED QUARTERLY FINANCIAL DATA

(In Millions)	1st Quarter  (A)		2nd Quarter		3rd Quarter		4th Quarter  (B)
2011
Revenues	$	275	$	284	$	293	$	315
Gross Profit	85		88		93		112
Operating Income	60		63		69		83
Net Income Available to Common Interest Partners	38		44		50		61
2010
Revenues	$	317	$	258	$	259	$	356
Gross Profit	119		73		71		120
Operating Income	95		56		51		95
Income from Continuing Operations	76		35		32		59
Net Income Available to Common Interest Partners	87		35		32		59

^(A)  The Operating Partnership’s 2010 first quarter net income includes an $11 million Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

^(B)  During the fourth quarter of 2010, the Operating Partnership paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

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Supplemental Disclosures

12 Months Ended

Dec. 31, 2011

Supplemental Disclosures Abstract

Supplemental Disclosures

Included in this item are the consolidated financial statements related to Plum Creek Timberlands, L.P., a Delaware Limited Partnership and a wholly-owned subsidiary of Plum Creek Timber Company, Inc. These financial statements are provided pursuant to Rule 3-10 of Regulation S-X in connection with the shelf registration statement on Form S-3 filed in December of 2011 pursuant to which Plum Creek Timberlands, L.P. has registered and from time to time may offer and sell debt securities. As of December 31, 2011, Plum Creek Timberlands, L.P. has publicly issued and outstanding $1,033 million aggregate principal amount of Senior Notes ("Public Debt") pursuant to the shelf registration statement.

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Consolidated Statements of Cash Flows (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Impairment of Certain Long-Lived Lumber Assets	$ 10
PLUM CREEK TIMBERLANDS L P [Member]
Impairment of Certain Long-Lived Lumber Assets	$ 10

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Accounting Policies (Policy)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

General

General. Plum Creek Timber Company, Inc. (“Plum Creek,” “the company,” “we,” “us,” or “our”), a Delaware Corporation, is a real estate investment trust, or “REIT”, for federal income tax purposes. Plum Creek Timber Company, Inc. is also the parent company of its wholly-owned subsidiary Plum Creek Timberlands, L.P. (“the Partnership”), a Delaware Limited Partnership. At December 31, 2011, the company owned and managed approximately 6.6 million acres of timberlands in the Northwest, Southern and Northeast United States, and owned 8 wood product conversion facilities in the Northwest United States (2 of which have been curtailed). Included in the 6.6 million acres are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. In addition, the company has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller acreage transactions over the near and medium term. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Basis of Presentation

Basis of Presentation. The consolidated financial statements of the company include the accounts of Plum Creek Timber Company, Inc. and its subsidiaries. Intercompany transactions and accounts have been eliminated in consolidation. All transactions are denominated in United States dollars.

Use of Estimates

Use of Estimates. The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Concentrations Disclosure

Customer Concentrations. The following table sets forth the annual revenues from the company’s largest customer as a percentage of total annual revenues for the years ended December 31:

	2011		2010		2009
Customer Revenue as a Percentage of Total Revenues	7	%	7	%	7	%

If adverse market conditions for wood products were to continue or worsen, the loss of this customer could have a significant effect on the company’s results of operations.

Product Concentrations. Sales of the company’s timber and wood products are dependent upon the economic conditions of the housing, repair and remodeling, industrial, and pulp and paper industries. Sales of the company’s timberlands are dependent upon the general economic conditions in the United States, interest rates and the availability of buyer financing from financial institutions, not-for-profit organizations and government sources. As a result of these product concentrations, continued or worsening conditions in these markets could have a significant impact on the company’s results of operations

Revenue Recognition

Revenue Recognition. Timber sales revenues are recognized when legal ownership and the risk of loss transfers to the purchaser and the quantity sold is determinable. The company sells timber under delivered log agreements as well as through sales of standing timber (or “stumpage”). For delivered sales, revenue, which includes amounts billed for shipping and handling (logging and hauling of timber), is recognized when the log is delivered to the customer. Stumpage is sold using pay-as-cut or timber deed sale agreements. Under a pay-as-cut sales contract, the purchaser acquires the right to harvest specified timber on a tract, at an agreed upon price per unit. The sale and any related advances are recognized as revenue as the purchaser harvests the timber on the tract. Under a timber deed sale, the buyer agrees to purchase and harvest specified timber on a tract of land over the term of the contract (usually less than 18 months). Unlike a pay-as-cut sales contract, risk of loss and title to the trees transfer to the buyer when the contract is signed. The buyer also pays the full purchase price when the contract is signed. Revenue from a timber deed sale is recognized when the contract is signed.

Revenues generated from the sale of lumber, plywood, medium density fiberboard (“MDF”) and related by-products (primarily wood chips), and amounts billed for shipping and handling, are recognized at the time of delivery.

Revenue from the sale of real estate is recognized when the sale has been consummated, the buyer’s initial and ongoing payments are adequate, the risks and rewards of owning the property have transferred to the buyer, and we have no continuing involvement with the property. For substantially all of our real estate sales, we receive the entire consideration in cash at closing (“Cash Sales”). Also at closing, the risks and rewards of ownership transfer to the buyer and we do not have a continuing involvement in our properties after they are sold. We recognize revenue under the full accrual method for Cash Sales of real estate when the sale is consummated (i.e., at closing). On occasion, we receive a portion of the real estate sale consideration in the form of a note receivable. These sales ("Credit Sales") as a percentage of total real estate sales were as follows for the years ended December 31:

	2011		2010		2009
Credit Sales as a Percentage of Total Real Estate Sales	0	%	3	%	3	%

Under these circumstances, we use the full accrual method of recognizing revenue if the buyer’s initial and continuing investment is adequate; otherwise, revenue is generally recognized under the cost recovery method or deposit method, depending on the circumstances. Revenue from real estate development projects is generally recognized under the full accrual method of accounting because sales generally do not commence until the project is completed. Broker commissions and closing costs of our Real Estate Segment are included in Cost of Goods Sold.

We occasionally sell timberlands to a single buyer under a multi-period contract covering a series of prescheduled closings and/or options. Under these multi-period contracts, once title and risk of loss have transferred to the buyer for individual properties, the properties sold cannot be returned for a refund. However, deposits for future closings under multi-period contracts may be refunded under certain circumstances. The company treats each closing under a multi-period arrangement as a separate sale. Revenue in connection with a multi-period contract is generally recognized at closing equal to the lesser of the non-refundable consideration received or an allocation of total consideration based on fair value.

Furthermore, we may occasionally pursue a non-cash exchange of timberlands. Revenue is recognized in connection with non-cash exchanges of timberlands when the exchanges are considered to have commercial substance. We will recognize revenue to the extent of the fair value of the timberlands received. Revenues from non-cash exchanges of timberlands were $25 million in 2009.

Revenue generated from real estate sales includes the sale of higher value timberlands, non-strategic timberlands and large blocks of timberlands. In some of these transactions, the company sells timberlands that qualify for like-kind (tax-deferred) exchange treatment under the Internal Revenue Code. Substantially all of these sales involve a third party intermediary, whereby the third party intermediary receives proceeds related to the property sold and then reinvests the proceeds in like-kind property. The proceeds are recorded as revenue when the third party intermediary receives them. See “Like-Kind Exchanges”

Cash and Cash Equivalents

Cash and Cash Equivalents. All highly liquid investments purchased with an original maturity of three months or less are considered to be cash equivalents. Substantially all of the cash and cash equivalents are invested in money market funds

Accounts Receivable

Accounts Receivable. Accounts receivable is presented net of an allowance for doubtful accounts of $0.4 million at December 31, 2011 and $0.4 million at December 31, 2010. Accounts are deemed past due based on payment terms. The allowance for doubtful accounts represents management’s estimate and is based on historical losses, recent collection history, credit ratings of individual customers and existing economic conditions. Delinquent accounts are charged against the allowance for doubtful accounts to the extent and at the time they are deemed uncollectible

Like-Kind Exchanges

Like-Kind Exchanges. Plum Creek may enter into like-kind (tax-deferred) exchange transactions to acquire and sell assets, principally timberlands. These transactions may include both forward (timberlands sold, followed by reinvestment of proceeds to acquire timberlands) and reverse (timberlands purchased, followed by receipt of proceeds from timberland sales) like-kind exchanges. The company uses a qualified escrow account to facilitate like-kind exchange transactions. Funds from forward like-kind exchange transactions are restricted from being used until the funds are either successfully reinvested in timber and timberlands or the exchange fails and the proceeds are distributed to the company

Inventories

Inventories. Logs, work-in-process and finished goods are stated at the lower of cost or market using the average cost method. A separate lower of cost or market analysis is prepared for each product line (i.e. lumber, plywood and MDF). Net realizable value is determined based on actual selling prices at the end of the accounting period. Losses on firm purchase commitments for logs are recorded when the related manufactured finished products are expected to be sold at a loss based on current product prices. Supplies inventories are stated at cost. Costs for manufactured inventories include raw materials, labor, supplies, energy, depreciation and production overhead. Cost of log inventories include timber depletion, stumpage, associated logging and harvesting costs, road costs and production overhead

Timber and Timberlands

Timber and Timberlands. Timber (including timber deeds and logging roads) and timberlands (including mineral reserves) are stated at cost less accumulated depletion for timber previously harvested and accumulated road amortization. The company capitalizes timber and timberland purchases along with reforestation costs and other costs associated with the planting and growing of timber, such as site preparation, growing or purchases of seedlings, planting, fertilization, herbicide application and the thinning of tree stands to improve growth. The company presents timber and timberland purchases and the capitalized costs described above under Investing Activities on the Consolidated Statements of Cash Flows. A timber deed, also called timber cutting rights, allows the company to harvest timber on timberlands it does not own over a specific time period (currently less than 10 years). The company capitalizes timber deed acquisitions. The company presents timber deed acquisitions under Operating Activities on the Consolidated Statements of Cash Flows. Timber carrying costs, such as real estate taxes, insect control, wildlife control, leases of timberlands (other than lease payments for the purchase of standing timber, in which case the payments are capitalized) and forest management personnel salaries and fringe benefits, are expensed as incurred. Costs of major roads are capitalized and amortized over 30 years. Costs for roads that are built to access multiple logging sites over numerous years are capitalized and amortized over 6 years. Costs for roads built to access a single logging site are expensed as incurred.

Costs attributable to timber harvested, or depletion, are charged against income as trees are harvested. Depletion rates are determined annually based on the relationship between net carrying value of the timber plus certain capitalizable silviculture costs expected to be incurred over the harvest cycle and total timber volume estimated to be available over the harvest cycle. The depletion rate does not include an estimate for either future reforestation costs associated with a stand’s final harvest or future volume in connection with the replanting of a stand subsequent to its final harvest. Net carrying value of the timber and timberlands is used to compute the gain or loss in connection with timberland sales

Higher and Better Use Timberlands / Real Estate Development

Higher and Better Use Timberlands / Real Estate Development. We estimate that included in the company’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber. Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries.

Costs associated with a specific real estate project are capitalized when management estimates that it is probable that a project will be successful. Both external and internal expenditures directly associated with the specific real estate project are capitalized. The company will capitalize improvements and other development costs, including interest costs and property taxes, during the development period. General real estate development costs not related to a specific project and costs incurred before management has concluded that it is probable that a project will be successful (e.g. investigatory costs) are expensed as incurred. For real estate projects with multiple parcels, the company determines the cost of the individual lots sold by allocating the historical cost of the land, timber, development and common construction costs on a relative sales value.

Properties developed by the company will generally be low-intensity development limited to activities associated with obtaining entitlements. Capitalized real estate development costs, including the book basis in the related timber and timberlands associated with these developments, were $13 million at December 31, 2011. Substantially all of these properties are expected to be sold beyond one year and are included in Other Assets (non-current). Total capitalized real estate development costs at December 31, 2010 were $14 million.

Larger and more complicated projects needing more invested capital may be developed through third party ventures. These projects have a longer timeframe and are not expected to be sold in the near term. The capitalized development costs for these projects and the book basis of the related timber and timberlands are included in Timber and Timberlands as they are still managed for timber operations. At December 31, 2011, approximately $18 million of costs have been capitalized for a single project that has been approved by a state commission but is being appealed in court by groups opposed to the project. While not expected, if the approval is reversed, some or all of these capitalized costs could be written off in the next twelve months.

The book basis of timberlands that are considered held for sale are presented in the Consolidated Balance Sheet as Assets Held for Sale. The total book basis for assets held for sale was $103 million at December 31, 2011 and $57 million at December 31, 2010. Generally, timberlands that are under contract to sell or are listed for sale through an independent broker or by a taxable REIT subsidiary and are expected to be sold within the next year are considered assets held for sale. The book basis of timberlands that do not meet the held for sale criteria is included in Timber and Timberlands

Accounting for Equity Method Investments

Accounting for Equity Method Investments. In 2008, the company contributed 454,000 acres of timberlands located in its Southern Resources Segment to a timberland venture in exchange for a $705 million preferred interest and a $78 million common interest. The company accounts for its interest in the Timberland Venture under the equity method of accounting. See Note 16 of the Notes to Consolidated Financial Statements.

Property, Plant, and Equipment

Property, Plant and Equipment. Property, plant and equipment are recorded at cost. Replacements of major units of property are capitalized, and the replaced units are retired. Replacement of minor components of property and repair and maintenance costs are charged to expense as incurred.

The company evaluates its long-lived assets for potential impairment whenever circumstances indicate the book basis of an asset group may not be recoverable. The company considers each of its manufacturing facilities to be a separate asset group based on identifiable cash flows.

All property, plant and equipment other than manufacturing machinery (for lumber, plywood and MDF) are depreciated using the straight-line method over the estimated useful lives of the related assets. Manufacturing machinery and equipment are depreciated on either a straight-line basis or a units-of-production basis, which approximates a straight-line basis. Useful lives are 19 years for land improvements, 20 to 45 years for buildings, and 3 to 20 years for machinery and equipment. Leasehold improvements are depreciated over the lease term or estimated useful life, whichever is shorter. The cost and related accumulated depreciation of property sold or retired are removed from the accounts and any gain or loss is recorded. Depreciation expense, excluding impairment charges, was as follows for the years ended December 31 (in millions):

	2011		2010		2009
Depreciation Expense	$	20	$	19	$	20

Grantor Trusts

Grantor Trusts. The company has a grantor trust that was established for deferred compensation and deferred Plum Creek shares. See Note 10 of the Notes to Consolidated Financial Statements. Deferred compensation assets, which include money market and mutual fund investments, are classified as “trading securities” and are carried at market value. Realized gains and losses and changes in unrealized gains and losses and a corresponding amount of compensation expense are recorded in the Consolidated Statements of Income.

Plum Creek maintains another grantor trust, which the company uses to fund its non-qualified pension plan obligation. See Notes 10 and 12 of the Notes to Consolidated Financial Statements. Money market and mutual fund investments held by this trust are classified as “available for sale securities.” The investments are carried at market values on the company’s Consolidated Balance Sheets. Realized gains and losses are recognized in the Consolidated Statements of Income; changes in unrealized gains and losses are recorded as other comprehensive income or loss, unless an other than temporary impairment has occurred, in which case an impairment loss is recognized in the Consolidated Statements of Income

Shipping and Handling Costs

Shipping and Handling Costs. Costs incurred for the transportation of timber and manufactured products are included in Cost of Goods Sold

Accounting for Share-Based Compensation

Accounting for Share-Based Compensation. All share-based payments to employees are recognized in the income statement based on their fair values. The company uses the Black-Scholes-Merton option pricing model to value stock options and uses the grant date fair values, the closing market price for its common stock, to value other common stock awards of restricted stock and restricted stock units. The company also grants share-based awards that are classified and accounted for as liabilities. These awards are valued using a Monte Carlo simulation

Other Operating Income

Other Operating Income. Periodically the company will recognize gains and losses from miscellaneous asset sales, litigation settlements and other items which are reported in our Consolidated Statements of Income as Other Operating Income (Expense), net. See Note 19 of the Notes to Consolidated Financial Statements

Reclassifications

Reclassifications. Certain prior year amounts have been reclassified to conform to the 2011 presentation. The reclassifications had no impact on operating income or net income

New Accounting Pronouncements

New Accounting Pronouncements

Presentation of Comprehensive Income. In 2011, the FASB issued a new accounting standard requiring entities to present net income and other comprehensive income in either a single continuous statement or in two separate, but consecutive, statements of net income and comprehensive income. The new requirements do not change which components of comprehensive income are recognized in net income or in other comprehensive income, or when an item of other comprehensive income is recognized or must be reclassified to net income. During 2011, the FASB also deferred a requirement that entities present separately reclassification adjustments on the face of the income statement.

While the new requirements are effective for public entities in fiscal years (including interim periods) beginning after December 15, 2011, as permitted by the standard, the company has elected adoption at December 31, 2011. As a result, the financial statements include separate Consolidated Statements of Comprehensive Income with retrospective application to previously presented periods.

PLUM CREEK TIMBERLANDS L P [Member]

General

General. Plum Creek Timberlands, L.P. is a Delaware Limited Partnership and a wholly-owned subsidiary of Plum Creek Timber Company, Inc. (“Parent”), a Delaware Corporation and a real estate investment trust, or “REIT”. References herein to “the Operating Partnership,” “we,” “us,” or “our” relate to Plum Creek Timberlands, L.P. and all of its wholly-owned consolidated subsidiaries; references to “Plum Creek” or “Parent” relate to Plum Creek Timber Company, Inc. and all of its wholly-owned consolidated subsidiaries.

At December 31, 2011, the Operating Partnership owned and managed approximately 6.6 million acres of timberlands in the Northwest, Southern and Northeast United States, and owned 8 wood product conversion facilities in the Northwest United States (2 of which have been curtailed). Included in the 6.6 million acres are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. In addition, the Operating Partnership has approximately 300,000 acres of non-strategic timberlands, which are expected to be sold in smaller acreage transactions over the near and medium term. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber.

Basis of Presentation

Basis of Presentation. The consolidated financial statements of the Operating Partnership include the accounts of Plum Creek Timberlands, L.P. and its subsidiaries. The Operating Partnership is 100% owned by Plum Creek. Plum Creek has no assets or liabilities other than its direct and indirect ownership interests in Plum Creek Timberlands, L.P. and its interest in Plum Creek Ventures I, LLC (“PC Ventures”), a 100% owned subsidiary of Plum Creek. The Parent has no operations other than its investment in these subsidiaries and transactions in its own equity, such as the issuance and/or repurchase of common stock and the receipt of proceeds from stock option exercises. Intercompany transactions and accounts between Plum Creek Timberlands, L.P. and its subsidiaries have been eliminated in consolidation. All transactions are denominated in United States dollars.

Use of Estimates

Use of Estimates. The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Concentrations Disclosure

Customer Concentrations. The following table sets forth the annual revenues from the Operating Partnership’s largest customer as a percentage of total annual revenues for the years ended December 31:

	2011		2010		2009
Customer Revenue as a Percentage of Total Revenues	7	%	7	%	7	%

If adverse market conditions for wood products were to continue or worsen, the loss of this customer could have a significant effect on the Operating Partnership’s results of operations.

Product Concentrations. Sales of the Operating Partnership’s timber and wood products are dependent upon the economic conditions of the housing, repair and remodeling, industrial, and pulp and paper industries. Sales of the Operating Partnership’s timberlands are dependent upon the general economic conditions in the United States, interest rates and the availability of buyer financing from financial institutions, not-for-profit organizations and government sources. As a result of these product concentrations, continued or worsening conditions in these markets could have a significant impact on the Operating Partnership’s results of operations

Revenue Recognition

Revenue Recognition. Timber sales revenues are recognized when legal ownership and the risk of loss transfers to the purchaser and the quantity sold is determinable. The Operating Partnership sells timber under delivered log agreements as well as through sales of standing timber (or “stumpage”). For delivered sales, revenue, which includes amounts billed for shipping and handling (logging and hauling of timber), is recognized when the log is delivered to the customer. Stumpage is sold using pay-as-cut or timber deed sale agreements. Under a pay-as-cut sales contract, the purchaser acquires the right to harvest specified timber on a tract, at an agreed upon price per unit. The sale and any related advances are recognized as revenue as the purchaser harvests the timber on the tract. Under a timber deed sale, the buyer agrees to purchase and harvest specified timber on a tract of land over the term of the contract (usually less than 18 months). Unlike a pay-as-cut sales contract, risk of loss and title to the trees transfer to the buyer when the contract is signed. The buyer also pays the full purchase price when the contract is signed. Revenue from a timber deed sale is recognized when the contract is signed.

Revenues generated from the sale of lumber, plywood, medium density fiberboard (“MDF”) and related by-products (primarily wood chips), and amounts billed for shipping and handling, are recognized at the time of delivery.

Revenue from the sale of real estate is recognized when the sale has been consummated, the buyer’s initial and ongoing payments are adequate, the risks and rewards of owning the property have transferred to the buyer, and we have no continuing involvement with the property. For substantially all of our real estate sales, we receive the entire consideration in cash at closing (“Cash Sales”). Also at closing, the risks and rewards of ownership transfer to the buyer and we do not have a continuing involvement in our properties after they are sold. We recognize revenue under the full accrual method for Cash Sales of real estate when the sale is consummated (i.e., at closing). On occasion, we receive a portion of the real estate sale consideration in the form of a note receivable. These sales ("Credit Sales") as a percentage of total real estate sales were as follows for the years ended December 31:

	2011		2010		2009
Credit Sales as a Percentage of Total Real Estate Sales	0	%	3	%	3	%

Under these circumstances, we use the full accrual method of recognizing revenue if the buyer’s initial and continuing investment is adequate; otherwise, revenue is generally recognized under the cost recovery method or deposit method, depending on the circumstances. Revenue from real estate development projects is generally recognized under the full accrual method of accounting because sales generally do not commence until the project is completed. Broker commissions and closing costs of our Real Estate Segment are included in Cost of Goods Sold.

We occasionally sell timberlands to a single buyer under a multi-period contract covering a series of prescheduled closings and/or options. Under these multi-period contracts, once title and risk of loss have transferred to the buyer for individual properties, the properties sold cannot be returned for a refund. However, deposits for future closings under multi-period contracts may be refunded under certain circumstances. The Operating Partnership treats each closing under a multi-period arrangement as a separate sale. Revenue in connection with a multi-period contract is generally recognized at closing equal to the lesser of the non-refundable consideration received or an allocation of total consideration based on fair value.

Furthermore, we may occasionally pursue a non-cash exchange of timberlands. Revenue is recognized in connection with non-cash exchanges of timberlands when the exchanges are considered to have commercial substance. We will recognize revenue to the extent of the fair value of the timberlands received. Revenues from non-cash exchanges of timberlands were $25 million in 2009.

Revenue generated from real estate sales includes the sale of higher value timberlands, non-strategic timberlands and large blocks of timberlands. In some of these transactions, the Operating Partnership sells timberlands that qualify for like-kind (tax-deferred) exchange treatment under the Internal Revenue Code. Substantially all of these sales involve a third party intermediary, whereby the third party intermediary receives proceeds related to the property sold and then reinvests the proceeds in like-kind property. The proceeds are recorded as revenue when the third party intermediary receives them. See “Like-Kind Exchanges”

Cash and Cash Equivalents

Cash and Cash Equivalents. All highly liquid investments purchased with an original maturity of three months or less are considered to be cash equivalents. Substantially all of the cash and cash equivalents are invested in money market funds

Accounts Receivable

Accounts Receivable. Accounts receivable is presented net of an allowance for doubtful accounts of $0.4 million at December 31, 2011 and $0.4 million at December 31, 2010. Accounts are deemed past due based on payment terms. The allowance for doubtful accounts represents management’s estimate and is based on historical losses, recent collection history, credit ratings of individual customers and existing economic conditions. Delinquent accounts are charged against the allowance for doubtful accounts to the extent and at the time they are deemed uncollectible

Like-Kind Exchanges

Like-Kind Exchanges. The Operating Partnership may enter into like-kind (tax-deferred) exchange transactions to acquire and sell assets, principally timberlands. These transactions may include both forward (timberlands sold, followed by reinvestment of proceeds to acquire timberlands) and reverse (timberlands purchased, followed by receipt of proceeds from timberland sales) like-kind exchanges. The Operating Partnership uses a qualified escrow account to facilitate like-kind exchange transactions. Funds from forward like-kind exchange transactions are restricted from being used until the funds are either successfully reinvested in timber and timberlands or the exchange fails and the proceeds are distributed to the Operating Partnership

Inventories

Inventories. Logs, work-in-process and finished goods are stated at the lower of cost or market using the average cost method. A separate lower of cost or market analysis is prepared for each product line (i.e. lumber, plywood and MDF). Net realizable value is determined based on actual selling prices at the end of the accounting period. Losses on firm purchase commitments for logs are recorded when the related manufactured finished products are expected to be sold at a loss based on current product prices. Supplies inventories are stated at cost. Costs for manufactured inventories include raw materials, labor, supplies, energy, depreciation and production overhead. Cost of log inventories include timber depletion, stumpage, associated logging and harvesting costs, road costs and production overhead

Timber and Timberlands

Timber and Timberlands. Timber (including timber deeds and logging roads) and timberlands (including mineral reserves) are stated at cost less accumulated depletion for timber previously harvested and accumulated road amortization. The Operating Partnership capitalizes timber and timberland purchases along with reforestation costs and other costs associated with the planting and growing of timber, such as site preparation, growing or purchases of seedlings, planting, fertilization, herbicide application and the thinning of tree stands to improve growth. The Operating Partnership presents timber and timberland purchases and the capitalized costs described above under Investing Activities on the Consolidated Statements of Cash Flows. A timber deed, also called timber cutting rights, allows the Operating Partnership to harvest timber on timberlands it does not own over a specific time period (currently less than 10 years) The Operating Partnership capitalizes timber deed acquisitions. The Operating Partnership presents timber deed acquisitions under Operating Activities on the Consolidated Statements of Cash Flows. Timber carrying costs, such as real estate taxes, insect control, wildlife control, leases of timberlands (other than lease payments for the purchase of standing timber, in which case the payments are capitalized) and forest management personnel salaries and fringe benefits, are expensed as incurred. Costs of major roads are capitalized and amortized over 30 years. Costs for roads that are built to access multiple logging sites over numerous years are capitalized and amortized over 6 years. Costs for roads built to access a single logging site are expensed as incurred.

Costs attributable to timber harvested, or depletion, are charged against income as trees are harvested. Depletion rates are determined annually based on the relationship between net carrying value of the timber plus certain capitalizable silviculture costs expected to be incurred over the harvest cycle and total timber volume estimated to be available over the harvest cycle. The depletion rate does not include an estimate for either future reforestation costs associated with a stand’s final harvest or future volume in connection with the replanting of a stand subsequent to its final harvest. Net carrying value of the timber and timberlands is used to compute the gain or loss in connection with timberland sales

Higher and Better Use Timberlands / Real Estate Development

Higher and Better Use Timberlands / Real Estate Development. We estimate that included in the Operating Partnership’s 6.6 million acres of timberlands are approximately 900,000 acres of higher value timberlands, which are expected to be sold and/or developed over the next fifteen years for recreational, conservation or residential purposes. Included within the 900,000 acres of higher value timberlands are approximately 700,000 acres we expect to sell for recreational uses, approximately 100,000 acres we expect to sell for conservation and approximately 100,000 acres that are identified as having development potential. In the meantime, all of our timberlands continue to be managed productively in our business of growing and selling timber. Some of our real estate activities, including our real estate development business, are conducted through our wholly-owned taxable REIT subsidiaries.

Costs associated with a specific real estate project are capitalized when management estimates that it is probable that a project will be successful. Both external and internal expenditures directly associated with the specific real estate project are capitalized. The Operating Partnership will capitalize improvements and other development costs, including interest costs and property taxes, during the development period. General real estate development costs not related to a specific project and costs incurred before management has concluded that it is probable that a project will be successful (e.g. investigatory costs) are expensed as incurred. For real estate projects with multiple parcels, the Operating Partnership determines the cost of the individual lots sold by allocating the historical cost of the land, timber, development and common construction costs on a relative sales value.

Properties developed by the Operating Partnership will generally be low-intensity development limited to activities associated with obtaining entitlements. Capitalized real estate development costs, including the book basis in the related timber and timberlands associated with these developments, were $13 million at December 31, 2011. Substantially all of these properties are expected to be sold beyond one year and are included in Other Assets (non-current). Total capitalized real estate development costs at December 31, 2010 were $14 million.

Larger and more complicated projects needing more invested capital may be developed through third party ventures. These projects have a longer timeframe and are not expected to be sold in the near term. The capitalized development costs for these projects and the book basis of the related timber and timberlands are included in Timber and Timberlands as they are still managed for timber operations. At December 31, 2011, approximately $18 million of costs have been capitalized for a single project that has been approved by a state commission but is being appealed in court by groups opposed to the project. While not expected, if the approval is reversed, some or all of these capitalized costs could be written off in the next twelve months.

The book basis of timberlands that are considered held for sale are presented in the Consolidated Balance Sheet as Assets Held for Sale. The total book basis for assets held for sale was $103 million at December 31, 2011 and $57 million at December 31, 2010. Generally, timberlands that are under contract to sell or are listed for sale through an independent broker or by a taxable REIT subsidiary and are expected to be sold within the next year are considered assets held for sale. The book basis of timberlands that do not meet the held for sale criteria is included in Timber and Timberlands

Accounting for Equity Method Investments

Accounting for Equity Method Investments. In 2008, a subsidiary of the Operating Partnership, Plum Creek Timber Operations I, LLC (“PC Member”), contributed 454,000 acres of timberlands located in its Southern Resources Segment to a timberland venture in exchange for a $705 million preferred interest and a $78 million common interest. The Operating Partnership accounts for its interest in the Timberland Venture under the equity method of accounting. See Note 13 of the Notes to Consolidated Financial Statements

Property, Plant, and Equipment

Property, Plant and Equipment. Property, plant and equipment are recorded at cost. Replacements of major units of property are capitalized, and the replaced units are retired. Replacement of minor components of property and repair and maintenance costs are charged to expense as incurred.

The Operating Partnership evaluates its long-lived assets for potential impairment whenever circumstances indicate the book basis of an asset group may not be recoverable. The Operating Partnership considers each of its manufacturing facilities to be a separate asset group based on identifiable cash flows.

All property, plant and equipment other than manufacturing machinery (for lumber, plywood and MDF) are depreciated using the straight-line method over the estimated useful lives of the related assets. Manufacturing machinery and equipment are depreciated on either a straight-line basis or a units-of-production basis, which approximates a straight-line basis. Useful lives are 19 years for land improvements, 20 to 45 years for buildings, and 3 to 20 years for machinery and equipment. Leasehold improvements are depreciated over the lease term or estimated useful life, whichever is shorter. The cost and related accumulated depreciation of property sold or retired are removed from the accounts and any gain or loss is recorded.

Depreciation expense, excluding impairment charges, was as follows for the years ended December 31 (in millions):

	2011		2010		2009
Depreciation Expense	$	20	$	19	$	20

Grantor Trusts

Grantor Trusts. The Operating Partnership has a grantor trust that was established for deferred compensation and deferred Plum Creek shares. See Note 7 of the Notes to Consolidated Financial Statements. Deferred compensation assets, which include money market and mutual fund investments, are classified as “trading securities” and are carried at market value. Realized gains and losses and changes in unrealized gains and losses and a corresponding amount of compensation expense are recorded in the Consolidated Statements of Income.

The Operating Partnership maintains another grantor trust, which the Operating Partnership uses to fund its non-qualified pension plan obligation. See Notes 7 and 9 of the Notes to Consolidated Financial Statements. Money market and mutual fund investments held by this trust are classified as “available for sale securities.” The investments are carried at market values on the Operating Partnership’s Consolidated Balance Sheets. Realized gains and losses are recognized in the Consolidated Statements of Income; changes in unrealized gains and losses are recorded as other comprehensive income or loss, unless an other than temporary impairment has occurred, in which case an impairment loss is recognized in the Consolidated Statements of Income

Shipping and Handling Costs

Shipping and Handling Costs. Costs incurred for the transportation of timber and manufactured products are included in Cost of Goods Sold

Accounting for Share-Based Compensation

Accounting for Share-Based Compensation. All share-based payments to employees are recognized in the income statement based on their fair values. The Black-Scholes-Merton option pricing model is used to value Plum Creek stock options and the grant date fair values, the closing market price for Plum Creek’s common stock, are used to value other Plum Creek common stock awards of restricted stock and restricted stock units. Share-based awards that are classified and accounted for as liabilities also may be granted to any officer, director, employee, consultant, or advisor of the Operating Partnership. These awards are valued using a Monte Carlo simulation

Other Operating Income

Other Operating Income. Periodically the Operating Partnership will recognize gains and losses from miscellaneous asset sales, litigation settlements and other items which are reported in our Consolidated Statements of Income as Other Operating Income (Expense), net. See Note 16 of the Notes to Consolidated Financial Statements

Reclassifications

Reclassifications. Certain prior year amounts have been reclassified to conform to the 2011 presentation. The reclassifications had no impact on operating income or net income

New Accounting Pronouncements

New Accounting Pronouncements

Presentation of Comprehensive Income. In 2011, the FASB issued a new accounting standard requiring entities to present net income and other comprehensive income in either a single continuous statement or in two separate, but consecutive, statements of net income and comprehensive income. The new requirements do not change which components of comprehensive income are recognized in net income or in other comprehensive income, or when an item of other comprehensive income is recognized or must be reclassified to net income. During 2011, the FASB also deferred a requirement that entities present separately reclassification adjustments on the face of the income statement.

While the new requirements are effective for public entities in fiscal years (including interim periods) beginning after December 15, 2011, as permitted by the standard, the Operating Partnership has elected adoption at December 31, 2011. As a result, the financial statements include separate Consolidated Statements of Comprehensive Income with retrospective application to previously presented periods.

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Partners' Capital (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2008	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBERLANDS L P [Member]
Capital Contribution	$ 783
Operating Partnership's Cash and Cash Equivalents	369	254	252	299
Undistributed Earnings		17	17
Net Assets of the Operating Partnership and Consolidated Subsidiaries		1,263
Assets Restricted from being Transferred		1,009
PC Ventures [Member]
Note Payable to Timberland Venture	783
Series T-1 Preferred Interest Return per Annum	7.375%
Distributions for Series T-1 Preferred Interests	$ 58

XML

Segment Information (Summary of Reported Segments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Depreciation, Depletion and Amortization									$ 96		$ 96		$ 109
Operating Income (Loss)	83	69	63	60	95	51	56	95	275		297		299
PLUM CREEK TIMBERLANDS L P [Member]
Depreciation, Depletion and Amortization									96		96		109
Operating Income (Loss)	83	69	63	60	95	51	56	95	275		297		299
Northern Resources [Member] | PLUM CREEK TIMBER CO INC [Member]
External Revenues									213		192		198
Intersegment Revenues									20		18		14
Export Revenues									26		14		11
Depreciation, Depletion and Amortization									26		28		30
Basis of Real Estate Sold									0		0		0
Other Operating Gain									0		1
Operating Income (Loss)									24		13		(3)
Northern Resources [Member] | PLUM CREEK TIMBERLANDS L P [Member]
External Revenues									213		192		198
Intersegment Revenues									20		18		14
Export Revenues									26		14		11
Depreciation, Depletion and Amortization									26		28		30
Basis of Real Estate Sold									0		0		0
Other Operating Gain									0		1
Operating Income (Loss)									24		13		(3)
Southern Resources [Member] | PLUM CREEK TIMBER CO INC [Member]
External Revenues									359		377		347
Intersegment Revenues									0		0		0
Export Revenues									0		0		0
Depreciation, Depletion and Amortization									51		50		51
Basis of Real Estate Sold									0		0		0
Other Operating Gain									0		0
Operating Income (Loss)									74		107		81
Southern Resources [Member] | PLUM CREEK TIMBERLANDS L P [Member]
External Revenues									359		377		347
Intersegment Revenues									0		0		0
Export Revenues									0		0		0
Depreciation, Depletion and Amortization									51		50		51
Basis of Real Estate Sold									0		0		0
Other Operating Gain									0		0
Operating Income (Loss)									74		107		81
Real Estate [Member] | PLUM CREEK TIMBER CO INC [Member]
External Revenues									301	[1]	336	[1]	486	[1]
Intersegment Revenues									0	[1]	0	[1]	0	[1]
Export Revenues									0	[1]	0	[1]	0	[1]
Depreciation, Depletion and Amortization									2	[1]	2	[1]	1	[1]
Basis of Real Estate Sold									77	[1]	132	[1]	155	[1]
Other Operating Gain									0	[1]	0	[1]
Operating Income (Loss)									195	[1]	180	[1]	278	[1]
Real Estate [Member] | PLUM CREEK TIMBERLANDS L P [Member]
External Revenues									301	[2]	336	[2]	486	[2]
Intersegment Revenues									0	[2]	0	[2]	0	[2]
Export Revenues									0	[2]	0	[2]	0	[2]
Depreciation, Depletion and Amortization									2	[2]	2	[2]	1	[2]
Basis of Real Estate Sold									77	[2]	132	[2]	155	[2]
Other Operating Gain									0	[2]	0	[2]
Operating Income (Loss)									195	[2]	180	[2]	278	[2]
Manufactured Products [Member] | PLUM CREEK TIMBER CO INC [Member]
External Revenues									273	[3]	265	[3]	245	[3]
Intersegment Revenues									0	[3]	0	[3]	0	[3]
Export Revenues									25		24		21
Depreciation, Depletion and Amortization									13	[3]	12	[3]	23	[3]
Basis of Real Estate Sold									0	[3]	0	[3]	0	[3]
Other Operating Gain									0	[3]	2	[3]
Operating Income (Loss)									15	[3]	24	[3]	(23)	[3]
Manufactured Products [Member] | PLUM CREEK TIMBERLANDS L P [Member]
External Revenues									273	[4]	265	[4]	245	[4]
Intersegment Revenues									0	[4]	0	[4]	0	[4]
Export Revenues									25	[4]	24	[4]	21	[4]
Depreciation, Depletion and Amortization									13	[4]	12	[4]	23	[4]
Basis of Real Estate Sold									0	[4]	0	[4]	0	[4]
Other Operating Gain									0	[4]	2	[4]
Operating Income (Loss)									15	[4]	24	[4]	(23)	[4]
Other Segment [Member] | PLUM CREEK TIMBER CO INC [Member]
External Revenues									21	[5]	20	[5]	18	[5]
Intersegment Revenues									0	[5]	0	[5]	0	[5]
Export Revenues									0	[5]	0	[5]	0
Depreciation, Depletion and Amortization									0	[5]	0	[5]	0	[5]
Basis of Real Estate Sold									0	[5]	0	[5]	0	[5]
Other Operating Gain									2	[5]	5	[5]
Operating Income (Loss)									21	[5]	23	[5]	17	[5]
Other Segment [Member] | PLUM CREEK TIMBERLANDS L P [Member]
External Revenues									21	[6]	20	[6]	18	[6]
Intersegment Revenues									0	[6]	0	[6]	0	[6]
Export Revenues									0	[6]	0	[6]	0	[6]
Depreciation, Depletion and Amortization									0	[6]	0	[6]	0	[6]
Basis of Real Estate Sold									0	[6]	0	[6]	0	[6]
Other Operating Gain									2	[6]	5	[6]
Operating Income (Loss)									21	[6]	23	[6]	17	[6]
Operating Segments [Member] | PLUM CREEK TIMBER CO INC [Member]
External Revenues									1,167	[7]	1,190	[7]	1,294	[7]
Intersegment Revenues									20	[7]	18	[7]	14	[7]
Export Revenues									51	[7]	38	[7]	32	[7]
Depreciation, Depletion and Amortization									92	[7]	92	[7]	105	[7]
Basis of Real Estate Sold									77	[7]	132	[7]	155	[7]
Other Operating Gain									2	[7]	8	[7]
Operating Income (Loss)									329	[7]	347	[7]	350	[7]
Operating Segments [Member] | PLUM CREEK TIMBERLANDS L P [Member]
External Revenues									1,167	[7]	1,190	[7]	1,294	[7]
Intersegment Revenues									20	[7]	18	[7]	14	[7]
Export Revenues									51	[7]	38	[7]	32	[7]
Depreciation, Depletion and Amortization									92	[7]	92	[7]	105	[7]
Basis of Real Estate Sold									77	[7]	132	[7]	155	[7]
Other Operating Gain									2	[7]	8	[7]
Operating Income (Loss)									$ 329	[7]	$ 347	[7]	$ 350	[7]

[1] (A) The company recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.During 2009, the company completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.During 2008, the company negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

[2] The Operating Partnership recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.During 2009, the Operating Partnership completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.During 2008, the Operating Partnership negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

[3] (B) During 2010, the company sold certain lumber manufacturing assets for a gain of $2 million. The gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

[4] During 2010, the Operating Partnership sold certain lumber manufacturing assets for a gain of $2 million. The gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

[5] During 2011, the company received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.During 2010, the company agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income. During 2010, the company received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The company allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term

[6] During 2011, the Operating Partnership received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.During 2010, the Operating Partnership agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income. During 2010, the Operating Partnership received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The Operating Partnership allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term.

[7] Consolidated depreciation, depletion and amortization includes unallocated corporate depreciation of $4 million for 2011, 2010 and 2009.

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Borrowings (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Schedule of Debt [Table Text Block]

Outstanding borrowings consist of the following (in millions): 

	December 31, 2011		December 31, 2010
Line of Credit maturing 2015, 1.71% at 12/31/11, based on LIBOR plus 1.50%	$	348	$	166
Term Credit Agreement due 2012, 0.65% at 12/31/11, based on LIBOR plus 0.375%.	350		350
Senior Notes due 2011, 7.83%	—		49
Senior Notes due 2013, 6.18%	174		174
Senior Notes due 2013, 7.76% less unamortized discount of $0.3 at 12/31/11, effective rate of 8.05%	72		111
Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10%	454		454
Senior Notes due 2016, mature serially 2012 to 2016, 8.05%	17		24
Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71%	575		575
Note Payable to Timberland Venture due 2018, 7.375%	783		783
Total Long-Term Debt	2,773		2,686
Less: Current Portion of Long-Term Debt	352		94
Less: Line of Credit	348		166
Long-Term Portion	$	2,073	$	2,426

Schedule of Senior Notes Outstanding

Senior Notes outstanding, including unamortized discount, consisted of the following (in millions): 

	December 31, 2011		December 31, 2010
Senior Notes
Public Debt	$	1,029	$	1,029
Private Debt	263		358
Total Senior Notes	$	1,292	$	1,387

Schedule of Debt Principal Payments

Debt Principal Payments. The table below summarizes the debt principal payments made for the years ended December 31 (in millions): 

	2011		2010
Public Debt	$	—	$	—
Private Debt	95		269
Term Credit Agreement	—		250
Total	$	95	$	519

Schedule of Maturities of Long-term Debt [Table Text Block]

Debt Maturities. The aggregate maturities on all debt agreements are as follows as of December 31, 2011 (in millions): 

Maturity	Debt Agreements		Note Payable to Timberland Venture		Total
2012	$	353	$	—	$	353
2013	250		—		250
2014	3		—		3
2015	810		—		810
2016	3		—		3
Thereafter	575		783		1,358
Total	$	1,994	$	783	$	2,777

PLUM CREEK TIMBERLANDS L P [Member]

Schedule of Debt [Table Text Block]

Outstanding borrowings of the Operating Partnership, all of which are unsecured, consist of the following (in millions): 

	December 31, 2011		December 31, 2010
Line of Credit maturing 2015, 1.71% at 12/31/11, based on LIBOR plus 1.50%	$	348	$	166
Term Credit Agreement due 2012, 0.65% at 12/31/11, based on LIBOR plus 0.375%.	350		350
Senior Notes due 2011, 7.83%	—		49
Senior Notes due 2013, 6.18%	174		174
Senior Notes due 2013, 7.76% less unamortized discount of $0.3 at 12/31/11, effective rate of 8.05%	72		111
Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10%	454		454
Senior Notes due 2016, mature serially 2012 to 2016, 8.05%	17		24
Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71%	575		575
Total Long-Term Debt	1,990		1,903
Less: Current Portion of Long-Term Debt	352		94
Less: Line of Credit	348		166
Long-Term Portion	$	1,290	$	1,643

Schedule of Senior Notes Outstanding

Senior Notes outstanding, including unamortized discount, consisted of the following (in millions): 

	December 31, 2011		December 31, 2010
Senior Notes
Public Debt	$	1,029	$	1,029
Private Debt	263		358
Total Senior Notes	$	1,292	$	1,387

Schedule of Debt Principal Payments

Debt Principal Payments. The table below summarizes the debt principal payments made for the years ended December 31 (in millions): 

	2011		2010
Public Debt	$	—	$	—
Private Debt	95		269
Term Credit Agreement	—		250
Total	$	95	$	519

Schedule of Maturities of Long-term Debt [Table Text Block]

Debt Maturities. The aggregate maturities on all debt agreements are as follows as of December 31, 2011 (in millions):

Maturity	Debt Agreements
2012	$	353
2013	250
2014	3
2015	810
2016	3
Thereafter	575
Total	$	1,994

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Accounting Policies (Narrative)(Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member] Year mill acre	Dec. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2009 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member] Land Improvements [Member] Year	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member] Building [Member] Year	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member] Machinery and Equipment [Member] Year	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member] Year mill acre	Dec. 31, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2009 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member] Land Improvements [Member] Year	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member] Building [Member] Year	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member] Machinery and Equipment [Member] Year	Dec. 31, 2011 Customer Concentration Risk [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Customer Concentration Risk [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2009 Customer Concentration Risk [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Customer Concentration Risk [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Customer Concentration Risk [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2009 Customer Concentration Risk [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2008 Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member] acre	Dec. 31, 2008 Timberland Venture [Member] PLUM CREEK TIMBERLANDS L P [Member] acre
Timber and Timberlands, net (acres)	6,600,000						6,600,000
Product conversion facilities owned in the Northwest United States	8						8
Curtailed product conversion facilities owned in Northwest US	2						2
Higher and better use timberlands, which are expected to be sold and/or developed, acres	900,000						900,000
Total acres of non-strategic timberlands	300,000						300,000
Revenue concentration from the company's largest customer (percentage)													7.00%	7.00%	7.00%	7.00%	7.00%	7.00%
Ownership Percentage							100.00%
Notes Receivable as a Percentage of Total Revenues	0.00%	3.00%	3.00%				0.00%	3.00%	3.00%
Non Cash Exchange Revenue			$ 25						$ 25
Allowance for doubtful accounts	0.4	0.4					0.4	0.4
Capitalization and amortization period of major roads (years)	30						30
Capitalization and amortization period of logging roads (years)	6						6
Land expect to sell for recreational uses (acres)	700,000						700,000
Land expect to sell for conservation (acres)	100,000						100,000
Land designated with development potential (acres)	100,000						100,000
Long Term Inventory Real Estate Land And Land Development Costs	13	14					13	14
Capitalized cost for projects developed through third party ventures	18						18
Assets Held for Sale	103	57					103	57
Contributed Acres Of Timberlands To Venture																			454,000	454,000
Preferred interest in venture																			705	705
Common interest in venture																			78	78
Property, Plant and Equipment, Useful Life, Average				19						19
Property, Plant and Equipment, Useful Life, Minimum					20	3					20	3
Property, Plant and Equipment, Useful Life, Maximum					45	20					45	20
Depreciation expense	$ 20	$ 19	$ 20				$ 20	$ 19	$ 20

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Restricted Net Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
PLUM CREEK TIMBER CO INC [Member]
Note Payable to Timberland Venture	$ 783	$ 783		$ 783
Operating Partnership's Cash and Cash Equivalents	254	252	299	369
PLUM CREEK TIMBERLANDS L P [Member]
Operating Partnership's Cash and Cash Equivalents	254	252	299	369
Net Assets of the Partnership and its Consolidated Subsidiaries	1,263
Assets Restricted from being Transferred	1,009
Undistributed Earnings	17	17
Partnership [Member] | PLUM CREEK TIMBER CO INC [Member]
Operating Partnership's Cash and Cash Equivalents	254
Net Assets of the Partnership and its Consolidated Subsidiaries	1,263
Assets Restricted from being Transferred	1,009
Undistributed Earnings	$ 17	$ 17

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Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Interest Expense, net:
Income from Continuing Operations	$ 193	$ 202	$ 236
Gain on Sale of Properties, net of tax	0	11	0
Net Income	193	213	236
PER SHARE AMOUNTS:
Income from Continuing Operations - Basic	$ 1.19	$ 1.25	$ 1.45
Income from Continuing Operations - Diluted	$ 1.19	$ 1.24	$ 1.44
Net Income per Share-Basic	$ 1.19	$ 1.31	$ 1.45
Net Income per Share-Diluted	$ 1.19	$ 1.31	$ 1.44
Weighted-Average Number of Shares Outstanding
-Basic	161.7	162.1	163.3
-Diluted	162.0	162.3	163.4
PLUM CREEK TIMBER CO INC [Member]
REVENUES:
Timber	572	569	545
Real Estate	301	336	486
Manufacturing	273	265	245
Other	21	20	18
Total Revenues	1,167	1,190	1,294
COSTS AND EXPENSES:
Timber	445	421	431
Real Estate	92	148	200
Manufacturing	250	236	257
Other	2	2	1
Total Cost of Goods Sold	789	807	889
Selling, General and Administrative	106	95	106
Total Costs and Expenses	895	902	995
Other Operating Income (Expense), net	3	9	0
Operating Income (Loss)	275	297	299
Equity Earnings from Timberland Venture	56	57	55
Interest Expense, net:
Interest Expense (Debt Obligations to Unrelated Parties)	81	80	89
Interest Expense (Note Payable to Timberland Venture)	58	58	58
Total Interest Expense, net	139	138	147
Loss on Extinguishment of Debt	0	(13)	(2)
Income before Income Taxes	192	203	205
Provision (Benefit) for Income Taxes	(1)	1	(31)
Income from Continuing Operations	193	202	236
Gain on Sale of Properties, net of tax	0	11	0
Net Income	193	213	236
PER SHARE AMOUNTS:
Income from Continuing Operations - Basic	$ 1.19	$ 1.25	$ 1.45
Income from Continuing Operations - Diluted	$ 1.19	$ 1.24	$ 1.44
Net Income per Share-Basic	$ 1.19	$ 1.31	$ 1.45
Net Income per Share-Diluted	$ 1.19	$ 1.31	$ 1.44
Dividends Declared - per Common Share Outstanding	$ 1.68	$ 1.68	$ 1.68
Weighted-Average Number of Shares Outstanding
-Basic	161.7	162.1	163.3
-Diluted	162.0	162.3	163.4
PLUM CREEK TIMBERLANDS L P [Member]
REVENUES:
Timber	572	569	545
Real Estate	301	336	486
Manufacturing	273	265	245
Other	21	20	18
Total Revenues	1,167	1,190	1,294
COSTS AND EXPENSES:
Timber	445	421	431
Real Estate	92	148	200
Manufacturing	250	236	257
Other	2	2	1
Total Cost of Goods Sold	789	807	889
Selling, General and Administrative	106	95	106
Total Costs and Expenses	895	902	995
Other Operating Income (Expense), net	3	9	0
Operating Income (Loss)	275	297	299
Equity Earnings from Timberland Venture	56	57	55
Interest Expense, net:
Total Interest Expense, net	81	80	89
Loss on Extinguishment of Debt	0	(13)	(2)
Income before Income Taxes	250	261	263
Provision (Benefit) for Income Taxes	(1)	1	(31)
Income from Continuing Operations	251	260	294
Gain on Sale of Properties, net of tax	0	11	0
Net Income before Allocation to Series T-1 Preferred Interest and Partners	251	271	294
Net Income Allocable to Series T-1 Preferred Interest	(58)	(58)	(58)
Net Income	$ 193	$ 213	$ 236

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Employee Pension and Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Schedule of Net Funded Status [Table Text Block]

The following table provides a reconciliation of benefit obligations, plan assets, and funded status of the plans for the years ended December 31 (in millions):

	2011			2010
Change in Benefit Obligation
Benefit Obligation at Beginning of Period	$	135		$	130
Service Cost	6			6
Interest Cost	8			7
Actuarial Loss	21			1
Benefits Paid	(6		)	(9		)
Benefit Obligation at End of Period	$	164		$	135
Change in Plan Assets
Fair Value of Plan Assets at Beginning of Period	$	106		$	96
Actual Return on Plan Assets	(3		)	14
Employer Contributions	3			5
Benefits Paid	(6		)	(9		)
Fair Value of Plan Assets at End of Period	100			106
Funded Status—December 31	$	(64	)	$	(29	)
Amounts Recognized in the Consolidated Balance Sheet
Current Liabilities	$	4		$	3
Other Long-Term Liabilities	60			26
Total	$	64		$	29

Schedule of Accumulated and Projected Benefit Obligations [Table Text Block]

The following table sets forth the benefit obligation, accumulated benefit obligation, plan assets, and assets held in the grantor trust for the qualified and non-qualified pension plans as of December 31 (in millions):

	Qualified Pension Plan				Non-Qualified Pension Plans
	2011		2010		2011		2010
Projected Benefit Obligation	$	128	$	106	$	36	$	29
Accumulated Benefit Obligation	120		101		31		25
Plan Assets	100		106		N/A		N/A
Assets Held in the Grantor Trust	N/A		N/A		31		30

Schedule of Net Benefit Costs [Table Text Block]

The components of pension cost recognized in net income are as follows for the years ended December 31 (in millions):

	2011			2010			2009
Service Cost	$	6		$	6		$	7
Interest Cost	8			7			8
Expected Return on Plan Assets	(7		)	(7		)	(8		)
Recognized Actuarial Loss	2			2			2
Settlement Loss	—			—			5
Total Pension Cost	$	9		$	8		$	14

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

The components of pension cost recognized in comprehensive income are as follows for the years ended December 31 (in millions):

	2011			2010			2009
Net Actuarial Loss (Gain)	$	31		$	(6	)	$	(3	)
Amortization of Net Actuarial Loss	(2		)	(2		)	(2		)
Effect of Settlements and Curtailments	—			—			(5		)
Total (Gain) Loss Recognized in Other Comprehensive Income	$	29		$	(8	)	$	(10	)
Combined Pension Cost Recognized in Comprehensive Income	$	38		$	—		$	4

Amounts Included in Accumulated Other Comprehensive Income

Amounts included in accumulated other comprehensive income are as follows as of December 31 (in millions):

	2011			2010
Net Loss	$	53		$	24
Deferred Tax Benefit	$	(12	)	$	(6	)

Schedule of Assumptions Used [Table Text Block]

Weighted-average assumptions used to determine benefit obligation are as follows:

	December 31, 2011		December 31, 2010
Discount Rates
Annuity Distributions	4.95	%	5.90	%
Lump-Sum Distributions	3.02	%	4.19	%
Rate of Compensation Increase	3.45	%	3.45	%

Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31:

	2011		2010		2009
Discount Rate	5.90	%	5.90	%	6.85	%
Expected Long-Term Return on Plan Assets	7.50	%	7.75	%	7.75	%
Rate of Compensation Increase	3.45	%	3.45	%	3.70	%

Schedule of Allocation of Plan Assets [Table Text Block]

At December 31, 2011, target allocations for the various asset classes are as follows:

Large Capitalization Domestic Equities	32	%
Small and Mid-Size Capitalization Domestic Equities	7	%
International Equities	26	%
Fixed Income	35	%

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The fair values of each major class of plan assets were as follows as of December 31, 2011 (in millions):

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	11		—		—		11
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	11		—		—		11
Small and Mid. Cap. Domestic Equity Securities	7		—		—		7
International Equity Securities	25		—		—		25
Fixed Income Securities	30		—		—		30
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		5		—		5
Total Investments Measured at Fair Value	$	84	$	16	$	—	$	100

The fair values of each major class of plan assets were as follows as of December 31, 2010 (in millions):

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	12		—		—		12
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	12		—		—		12
Small and Mid. Cap. Domestic Equity Securities	8		—		—		8
International Equity Securities	28		—		—		28
Fixed Income Securities	29		—		—		29
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		6		—		6
Total Investments Measured at Fair Value	$	89	$	17	$	—	$	106

Schedule of Expected Benefit Payments [Table Text Block]

The following table presents expected future benefit payments projected based on the same assumptions used by the company to measure the benefit obligation and estimate future employee service (in millions):

Year	Projected Benefit Payments
2012	$	13
2013	13
2014	13
2015	13
2016	14
2017 through 2021	72

PLUM CREEK TIMBERLANDS L P [Member]

Schedule of Net Funded Status [Table Text Block]

The following table provides a reconciliation of benefit obligations, plan assets, and funded status of the plans for the years ended December 31 (in millions):

	2011			2010
Change in Benefit Obligation
Benefit Obligation at Beginning of Period	$	135		$	130
Service Cost	6			6
Interest Cost	8			7
Actuarial Loss	21			1
Benefits Paid	(6		)	(9		)
Benefit Obligation at End of Period	$	164		$	135
Change in Plan Assets
Fair Value of Plan Assets at Beginning of Period	$	106		$	96
Actual Return on Plan Assets	(3		)	14
Employer Contributions	3			5
Benefits Paid	(6		)	(9		)
Fair Value of Plan Assets at End of Period	100			106
Funded Status—December 31	$	(64	)	$	(29	)
Amounts Recognized in the Consolidated Balance Sheet
Current Liabilities	$	4		$	3
Other Long-Term Liabilities	60			26
Total	$	64		$	29

Schedule of Accumulated and Projected Benefit Obligations [Table Text Block]

The following table sets forth the benefit obligation, accumulated benefit obligation, plan assets, and assets held in the grantor trust for the qualified and non-qualified pension plans as of December 31 (in millions):

	Qualified Pension Plan				Non-Qualified Pension Plans
	2011		2010		2011		2010
Projected Benefit Obligation	$	128	$	106	$	36	$	29
Accumulated Benefit Obligation	120		101		31		25
Plan Assets	100		106		N/A		N/A
Assets Held in the Grantor Trust	N/A		N/A		31		30

Schedule of Net Benefit Costs [Table Text Block]

The components of pension cost recognized in net income are as follows for the years ended December 31 (in millions): 

	2011			2010			2009
Service Cost	$	6		$	6		$	7
Interest Cost	8			7			8
Expected Return on Plan Assets	(7		)	(7		)	(8		)
Recognized Actuarial Loss	2			2			2
Settlement Loss	—			—			5
Total Pension Cost	$	9		$	8		$	14

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

The components of pension cost recognized in comprehensive income are as follows for the years ended December 31 (in millions): 

	2011			2010			2009
Net Actuarial Loss (Gain)	$	31		$	(6	)	$	(3	)
Amortization of Net Actuarial Loss	(2		)	(2		)	(2		)
Effect of Settlements and Curtailments	—			—			(5		)
Total (Gain) Loss Recognized in Other Comprehensive Income	$	29		$	(8	)	$	(10	)
Combined Pension Cost Recognized in Comprehensive Income	$	38		$	—		$	4

Amounts Included in Accumulated Other Comprehensive Income

Amounts included in accumulated other comprehensive income are as follows as of December 31 (in millions):

	2011			2010
Net Loss	$	53		$	24
Deferred Tax Benefit	$	(12	)	$	(6	)

Schedule of Assumptions Used [Table Text Block]

Weighted-average assumptions used to determine benefit obligation are as follows: 

	December 31, 2011		December 31, 2010
Discount Rates
Annuity Distributions	4.95	%	5.90	%
Lump-Sum Distributions	3.02	%	4.19	%
Rate of Compensation Increase	3.45	%	3.45	%

Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31: 

	2011		2010		2009
Discount Rate	5.90	%	5.90	%	6.85	%
Expected Long-Term Return on Plan Assets	7.50	%	7.75	%	7.75	%
Rate of Compensation Increase	3.45	%	3.45	%	3.70	%

Schedule of Allocation of Plan Assets [Table Text Block]

At December 31, 2011, target allocations for the various asset classes are as follows:

Large Capitalization Domestic Equities	32	%
Small and Mid-Size Capitalization Domestic Equities	7	%
International Equities	26	%
Fixed Income	35	%

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The fair values of each major class of plan assets were as follows as of December 31, 2011 (in millions):

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	11		—		—		11
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	11		—		—		11
Small and Mid. Cap. Domestic Equity Securities	7		—		—		7
International Equity Securities	25		—		—		25
Fixed Income Securities	30		—		—		30
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		5		—		5
Total Investments Measured at Fair Value	$	84	$	16	$	—	$	100

The fair values of each major class of plan assets were as follows as of December 31, 2010 (in millions): 

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	12		—		—		12
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	12		—		—		12
Small and Mid. Cap. Domestic Equity Securities	8		—		—		8
International Equity Securities	28		—		—		28
Fixed Income Securities	29		—		—		29
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		6		—		6
Total Investments Measured at Fair Value	$	89	$	17	$	—	$	106

Schedule of Expected Benefit Payments [Table Text Block]

The following table presents expected future benefit payments projected based on the same assumptions used by the Operating Partnership to measure the benefit obligation and estimate future employee service (in millions): 

Year	Projected Benefit Payments
2012	$	13
2013	13
2014	13
2015	13
2016	14
2017 through 2021	72

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Employee Pension and Retirement Plans (Future Benefit Payments Projected Based on the Same Assumptions Used to Measure the Benefit Obligation and Estimate Future Employee Service) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011
PLUM CREEK TIMBER CO INC [Member]
2012	$ 13
2013	13
2014	13
2015	13
2016	14
2017 through 2021	72
PLUM CREEK TIMBERLANDS L P [Member]
2012	13
2013	13
2014	13
2015	13
2016	14
2017 through 2021	$ 72

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Segment Information (Revenues From Manufactured Products by Product Line) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Revenue from Manufactured Products	$ 273	$ 265	$ 245
PLUM CREEK TIMBERLANDS L P [Member]
Revenue from Manufactured Products	273	265	245
Lumber [Member] | PLUM CREEK TIMBER CO INC [Member]
Revenue from Manufactured Products	77	75	85
Lumber [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Revenue from Manufactured Products	77	75	85
Plywood [Member] | PLUM CREEK TIMBER CO INC [Member]
Revenue from Manufactured Products	75	73	62
Plywood [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Revenue from Manufactured Products	75	73	62
MDF [Member] | PLUM CREEK TIMBER CO INC [Member]
Revenue from Manufactured Products	121	117	98
MDF [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Revenue from Manufactured Products	$ 121	$ 117	$ 98

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Consolidated Statements of Stockholder's Equity and Other Comprehensive Income (USD $) In Millions, except Share data	Total	PLUM CREEK TIMBER CO INC [Member]		PLUM CREEK TIMBER CO INC [Member] Common Stock [Member]	PLUM CREEK TIMBER CO INC [Member] Additional Paid-in Capital [Member]	PLUM CREEK TIMBER CO INC [Member] Retained Earnings (Accumulated Deficit) [Member]	PLUM CREEK TIMBER CO INC [Member] Treasury Stock [Member]	PLUM CREEK TIMBER CO INC [Member] Accumulated Other Comprehensive Income (Loss) [Member]	PLUM CREEK TIMBERLANDS L P [Member]		PLUM CREEK TIMBERLANDS L P [Member] Preferred Partnership Interest [Member]	PLUM CREEK TIMBERLANDS L P [Member] Common Partners' Capital [Member]	PLUM CREEK TIMBERLANDS L P [Member] Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2008									$ 2,362		$ 790	$ 1,603	$ (31)
Beginning Balance at Dec. 31, 2008		1,572		2	2,225	149	(773)	(31)
Beginning Balance Shares at Dec. 31, 2008				166,000,000
Net Income before Allocation to Series T-1 Preferred Interest and Partners									294			294
Net Income	236	236				236			236
Other Comprehensive Income (Loss), Net of Tax		12						12	12				12
Dividends		(275)				(275)
Shares Issued under Stock Incentive Plans (Shares)				100,000
Shares Issued under Stock Incentive Plans		1		0	1
Share-based compensation		7			7
Common Stock Repurchased (Shares)		3,300,000		(3,300,000)
Common Stock Repurchased		(87)		0			(87)
Tax Benefit from Stock Incentive Plans		0							0
Net Income Allocation to Series T-1 Preferred Interest									0		58	(58)
Distributions to Partners (Common Partnership Interests)									(362)			(362)
Distributions for Series T-1 Preferred Interest									(58)		(58)
Capital Contributions from Parent									8			8
Ending Balance at Dec. 31, 2009									2,256		790	1,485	(19)
Ending Balance at Dec. 31, 2009		1,466		2	2,233	110	(860)	(19)
Ending Balance Shares at Dec. 31, 2009				162,800,000
Net Income		87	[1]						87	[2]
Ending Balance at Mar. 31, 2010
Beginning Balance at Dec. 31, 2009									2,256		790	1,485	(19)
Beginning Balance at Dec. 31, 2009		1,466		2	2,233	110	(860)	(19)
Beginning Balance Shares at Dec. 31, 2009				162,800,000
Net Income before Allocation to Series T-1 Preferred Interest and Partners									271			271
Net Income	213	213				213			213
Other Comprehensive Income (Loss), Net of Tax		8						8	8				8
Dividends		(272)				(272)
Stock Option Exercises (Shares)				100,000
Stock Option Exercises		2		0	2
Shares Issued under Stock Incentive Plans (Shares)				100,000
Shares Issued under Stock Incentive Plans		1			1
Share-based compensation		7			7
Common Stock Repurchased (Shares)		1,400,000		(1,400,000)
Common Stock Repurchased		(51)		0			(51)
Tax Benefit from Stock Incentive Plans		0							0
Net Income Allocation to Series T-1 Preferred Interest									0		58	(58)
Distributions to Partners (Common Partnership Interests)									(321)			(321)
Distributions for Series T-1 Preferred Interest									(58)		(58)
Capital Contributions from Parent									8			8
Ending Balance at Dec. 31, 2010									2,164		790	1,385	(11)
Ending Balance at Dec. 31, 2010		1,374		2	2,243	51	(911)	(11)
Ending Balance Shares at Dec. 31, 2010		161,600,000		161,600,000
Beginning Balance at Sep. 30, 2010
Net Income		59	[3]						59	[4]
Ending Balance at Dec. 31, 2010									2,164
Ending Balance at Dec. 31, 2010		1,374
Ending Balance Shares at Dec. 31, 2010		161,600,000
Net Income		38							38
Ending Balance at Mar. 31, 2011
Beginning Balance at Dec. 31, 2010									2,164		790	1,385	(11)
Beginning Balance at Dec. 31, 2010		1,374		2	2,243	51	(911)	(11)
Beginning Balance Shares at Dec. 31, 2010		161,600,000		161,600,000
Net Income before Allocation to Series T-1 Preferred Interest and Partners									251			251
Net Income	193	193				193			193
Other Comprehensive Income (Loss), Net of Tax		(24)						(24)	(24)				(24)
Dividends		(272)				(272)
Stock Option Exercises (Shares)				300,000
Stock Option Exercises		10		0	10
Shares Issued under Stock Incentive Plans (Shares)				100,000
Shares Issued under Stock Incentive Plans		0			0
Share-based compensation		8			8
Common Stock Repurchased (Shares)		700,000		(700,000)
Common Stock Repurchased		(26)		0			(26)
Tax Benefit from Stock Incentive Plans		0							0
Net Income Allocation to Series T-1 Preferred Interest									0		58	(58)
Distributions to Partners (Common Partnership Interests)									(288)			(288)
Distributions for Series T-1 Preferred Interest									(58)		(58)
Capital Contributions from Parent									8			8
Ending Balance at Dec. 31, 2011									2,053		790	1,298	(35)
Ending Balance at Dec. 31, 2011		1,263		2	2,261	(28)	(937)	(35)
Ending Balance Shares at Dec. 31, 2011		161,300,000		161,300,000
Beginning Balance at Sep. 30, 2011
Net Income		61							61
Ending Balance at Dec. 31, 2011									2,053
Ending Balance at Dec. 31, 2011		$ 1,263
Ending Balance Shares at Dec. 31, 2011		161,300,000

[1] The company’s 2010 first quarter net income includes an $11 million ($0.07 per diluted share) Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

[2] The Operating Partnership’s 2010 first quarter net income includes an $11 million Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

[3] During the fourth quarter of 2010, the company paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

[4] During the fourth quarter of 2010, the Operating Partnership paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

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Employee Pension and Retirement Plans (Target Allocations for the Various Asset Classes) (Details)	Dec. 31, 2011
PLUM CREEK TIMBER CO INC [Member]
Large Capitalization Domestic Equities	32.00%
Small and Mid-Size Capitalization Domestic Equities	7.00%
International Equities	26.00%
Fixed Income	35.00%
PLUM CREEK TIMBERLANDS L P [Member]
Large Capitalization Domestic Equities	32.00%
Small and Mid-Size Capitalization Domestic Equities	7.00%
International Equities	26.00%
Fixed Income	35.00%

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Property, Plant and Equipment (Property, Plant and Equipment Table) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Land, Buildings and Improvements	$ 86	$ 84
Machinery and Equipment	315	309
Property, Plant and Equipment, gross	401	393
Accumulated Depreciation	(263)	(247)
Property, Plant and Equipment, net	138	146
PLUM CREEK TIMBERLANDS L P [Member]
Land, Buildings and Improvements	86	84
Machinery and Equipment	315	309
Property, Plant and Equipment, gross	401	393
Accumulated Depreciation	(263)	(247)
Property, Plant and Equipment, net	$ 138	$ 146

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Share-Based Compensation Plans (Assumptions For Computing Fair Values of Stock Option Awards Granted) (Details) (Stock Option [Member], USD $)	12 Months Ended
	Dec. 31, 2011 Year	Dec. 31, 2010 Year	Dec. 31, 2009 Year
PLUM CREEK TIMBER CO INC [Member]
Expected Term (years)	6	6	6
Risk-Free Interest Rate	2.70%	2.70%	2.00%
Volatility	40.60%	40.30%	35.50%
Dividend Yield	4.00%	4.80%	5.00%
Weighted-Average Measurement Date Fair Value	$ 11.60	$ 9.00	$ 7.02
PLUM CREEK TIMBERLANDS L P [Member]
Expected Term (years)	6	6	6
Risk-Free Interest Rate	2.70%	2.70%	2.00%
Volatility	40.60%	40.30%	35.50%
Dividend Yield	4.00%	4.80%	5.00%
Weighted-Average Measurement Date Fair Value	$ 11.60	$ 9.00	$ 7.02

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Inventories (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Schedule of Inventory, Current [Table Text Block]

Inventories, accounted for using the lower of average cost or market, consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Raw Materials (primarily logs)	$	10	$	12
Work-In-Process	1		1
Finished Goods	24		24
	35		37
Supplies	13		12
Total	$	48	$	49

PLUM CREEK TIMBERLANDS L P [Member]

Schedule of Inventory, Current [Table Text Block]

Inventories, accounted for using the lower of average cost or market, consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Raw Materials (primarily logs)	$	10	$	12
Work-In-Process	1		1
Finished Goods	24		24
	35		37
Supplies	13		12
Total	$	48	$	49

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Income Taxes (Schedule of Deferred Income Tax Asset (Liability) Classification) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Current Deferred Income Tax Asset	$ 6	$ 7
Non Current Deferred Income Tax Asset	17	10
Deferred Income Tax Asset, net	23	17
PLUM CREEK TIMBERLANDS L P [Member]
Current Deferred Income Tax Asset	6	7
Non Current Deferred Income Tax Asset	17	10
Deferred Income Tax Asset, net	$ 23	$ 17

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Share-Based Compensation Plans

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Share-Based Compensation Plans

SHARE-BASED COMPENSATION PLANS

Plum Creek has a stockholder approved Stock Incentive Plan that provides for the award of non-qualified stock options, restricted stock and restricted stock units, value management awards and dividend equivalents. No dividend equivalents have been awarded since 2005.

Under Plum Creek’s Stock Incentive Plan (“the Plan”), there are 12.4 million shares of common stock reserved and eligible for issuance. At December 31, 2011, 6.3 million shares of the 12.4 million reserved shares have been used and, therefore, 6.1 million shares remain available for grants of non-qualified stock options, grants of restricted stock and restricted stock units, or payments of vested value management awards. The number of shares to be issued in connection with value management awards is not determined until the end of their respective performance periods. New shares are issued for payment under the Plan for awards that pay out in shares or where the participant can elect payment in shares.

Stock Options. Under the Plan, non-qualified stock options may be granted to any officer, director, employee, consultant or advisor of the company. Each stock option granted allows the recipient the right to purchase the company’s common stock at the fair market value of the company’s common stock on the date of the grant. Generally, the stock options have a ten-year term and vest over a four-year period at a rate of 25% per year. Under the Plan, the exercise price of an option may not be reduced. The company does not plan to grant any stock option awards in 2012. Currently, the company intends to eliminate stock option grants from annual incentive awards and redistribute the value of these grants between Restricted Stock Units and Value Management Awards.

Presented below is a summary of Plum Creek’s stock option Plan activity for the year ended December 31, 2011:

	Shares Subject to Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value (Millions)
Balance at January 1, 2011	3,291,305		$	35.59
Granted	579,350		41.55
Exercised/Surrendered	(327,280	)	30.52
Cancelled/Forfeited	(2,450	)	38.33
Outstanding, December 31, 2011	3,540,925		$	37.03	5.9	$	6
Vested or Expected to Vest, December 31, 2011	3,246,281		$	36.90	5.8	$	6
Exercisable, December 31, 2011	2,164,465		$	36.23	4.5	$	5

The table below presents stock activity related to stock options exercised during the years ended December 31 (in millions):

	2011		2010		2009
Proceeds from Stock Options Exercised	$	10	$	2	$	—
Intrinsic Value of Stock Options Exercised	$	4	$	1	$	—
Tax Benefit Related to Stock Options Exercised	$	1	$	—	$	—

The weighted-average measurement date fair values of stock option awards granted were computed using the Black-Scholes-Merton option valuation model with the following assumptions for the years ended December 31:

	2011			2010			2009
Expected Term (years)	6			6			6
Risk-Free Interest Rate	2.7		%	2.7		%	2.0		%
Volatility	40.6		%	40.3		%	35.5		%
Dividend Yield	4.0		%	4.8		%	5.0		%
Weighted-Average Measurement Date Fair Value	$	11.60		$	9.00		$	7.02

The expected term of the options represents the estimated period of time until exercise and is based on the vesting period of the award and the historical exercise experience of similar awards. All participants were assumed to have similar exercise behavior. Expected volatility is based on historical volatility over the approximate expected term of the option.

Restricted Stock. Under the Plan, restricted stock of the company may be awarded to certain directors, officers and employees of the company. Restricted stock may not be sold, assigned, transferred, pledged or otherwise disposed of for a period of time from the date on which the restricted stock was granted. The recipients of restricted stock generally have the rights of stockholders of the company with respect to voting and receipt of dividends during the restricted period. Restricted stock generally vests six months from the grant date. The weighted-average grant date fair values of restricted stock awards granted for the years ended December 31, 2011, 2010 and 2009 were $41.99, $35.60 and $31.32, respectively. The fair value of restricted stock is based on the closing price of Plum Creek’s common stock on the date of grant.

Restricted stock awards activity was as follows for the year ended December 31, 2011:

	Shares		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	—		$	—
Granted	16,000		$	41.99
Vested	(16,000	)	$	41.99
Forfeited	—		$	—
Balance at December 31, 2011	—		$	—

The total fair value of restricted stock awards that vested during the years ended December 31, 2011, 2010 and 2009 was $0.7 million, $0.6 million and $0.6 million, respectively.

Restricted Stock Units. Under the Plan, restricted stock units may be awarded to certain directors, officers and employees of the company. The recipients of restricted stock units generally have the right to receive a cash amount equal to any dividends paid on the company’s common stock during the restriction period and upon vesting, the right to receive an equal number of shares of the company’s common stock. Restricted stock units generally vest over a four-year period at a rate of 25% per year. If employment is terminated prior to vesting, all unvested restricted stock units are forfeited. The weighted-average grant date fair value of restricted stock units granted for the years ended December 31, 2011, 2010 and 2009 was $41.45, $35.27 and $33.73, respectively. The fair value of restricted stock units is based on the closing price of the company’s common stock on the date of grant.

Restricted stock unit activity was as follows for the year ended December 31, 2011:

	Units		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	247,866		$	37.09
Granted	103,760		$	41.45
Vested	(107,386	)	$	38.66
Forfeited	(440	)	$	38.34
Balance at December 31, 2011	243,800		$	38.25

The total fair value of restricted stock units that vested during the years ended December 31, 2011, 2010 and 2009, was approximately $4 million, $3 million and $2 million, respectively.

Value Management Awards. Value management awards provide incentive compensation to participants that is contingent upon the company’s performance over a three-year period measured separately against the performance of peer groups consisting of forest products companies, the S&P 500 Index and the Morgan Stanley REIT Index over the same period.

Value management awards are earned in whole or in part based on a sliding scale. No value management award is earned if the company’s total shareholder return is below the 50^th percentile of the peer group. The full value management award is earned if the company’s total shareholder return is above the 75^th percentile. A unit has a face value of $100. The value of an award between the 50^th and 75^th percentiles is based on a sliding scale between 0% and 200% of the face value. Amounts earned, if any, are paid in the quarter immediately following the end of the three-year performance period. Unless otherwise specified by the participant, each payment will be paid in cash, except that any officer not in compliance with the company’s stock ownership guidelines is required to receive up to half of the payment value in the company’s common stock. Generally, to be entitled to the payment, a participant must be employed by the company on the last day of the performance period.

Different performance ranges are expected to be established for the 2012 grant of value management awards. A unit granted in 2012 will have no value below the 25^th percentile and will have full value at the 85^th percentile or above. Performance between the 25^th percentile and the 85^th percentile is expected to be based on a sliding scale between 0% and 200% of face value.

Value management awards activity was as follows for the year ended December 31, 2011:

	Units
Balance at January 1, 2011	211,080
Grants	80,730
Vested	(64,545	)
Forfeitures	(400	)
Balance at December 31, 2011	226,865

Presented below is a summary of outstanding value management awards and related fair values, unrecognized compensation expense and maximum value as of December 31, 2011 (dollars in millions):

Performance Period	Outstanding Units	Fair Value (A)		Unrecognized Compensation Expense		Maximum Award Value (B)
2009 to 2011	68,945	$	0.0	$	0.0	$	13.8
2010 to 2012	77,340	$	3.0	$	0.9	$	15.5
2011 to 2013	80,580	$	6.4	$	3.6	$	16.1

^(A)  The estimated fair value includes unrecognized compensation expense.

^(B)  Maximum award value is based on a unit value of $200.

Presented below is a summary of earned and paid (primarily in cash) value management awards for the following three-year performance periods:

Performance Period	Payout Value per Unit		Total Payout (millions)		Payment Date
2009 to 2011	$	0	$	0.0	Not Earned
2008 to 2010	$	0	$	0.0	Not Earned
2007 to 2009	$	200	$	11.1	1st Quarter 2010
2006 to 2008	$	200	$	10.6	1st Quarter 2009

Measurement of Compensation Costs for Value Management Awards. Grants of value management awards are classified and accounted for as liabilities. As a result, the expense recognized over the performance period for value management awards will equal the fair value (i.e., cash value) of an award as of the last day of the performance period multiplied by the number of awards that are earned. The quarterly expense is recognized during the performance period based on the fair value of value management awards as of the end of the most recent quarter. Prior to the end of the performance period, compensation costs for value management awards are based on the awards’ most recent quarterly fair values and the number of months of service rendered during the performance period.

Fair values for value management awards are computed based on our historical relative total shareholder return compared to the peer group from the beginning of the performance period to the end of the most recent quarter, and our simulated relative total shareholder return through the end of the performance period. The simulated total shareholder return of the company and the peer group is computed using a Monte Carlo simulation. The key assumptions used in the simulation of the company’s and the peer group’s total shareholder return are volatility, beta (the measure of how Plum Creek’s stock moves relative to the market as a whole) and risk-free interest rate.

Accounting for Share-Based Compensation. Share-based employee compensation cost is recognized based on fair value (see “Accounting for Share-Based Compensation” in Note 1 of the Notes to Consolidated Financial Statements). Stock options and most restricted stock units vest 25% per year over a four-year vesting period. Compensation cost related to these awards is recognized using the straight-line method over the four-year vesting period. Total compensation expense for all share-based compensation plans (including both awards paid in stock and cash) was approximately $10 million, $5 million and $12 million for the years ended December 31, 2011, 2010, and 2009, respectively. For the years ended December 31, 2011, 2010 and 2009, the company recognized $2 million, $1 million and $2 million, respectively, in tax benefits associated with share-based compensation plans. At December 31, 2011, there was $17 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plan. That cost is expected to be recognized over a weighted-average period of approximately two years.

PLUM CREEK TIMBERLANDS L P [Member]

Share-Based Compensation Plans

SHARE–BASED COMPENSATION PLANS

Plum Creek Timber Company, Inc. has a stockholder approved Stock Incentive Plan that provides for the award of non-qualified stock options, restricted stock and restricted stock units, value management awards and dividend equivalents. No dividend equivalents have been awarded since 2005. Certain executives and key employees of the Operating Partnership are covered by this plan. All of Plum Creek’s activities are conducted through the Operating Partnership, therefore all share-based compensation expense is allocated to the Operating Partnership. Proceeds from the exercise of Plum Creek stock options are retained by Plum Creek Timber Company, Inc.

Under Plum Creek’s Stock Incentive Plan (“the Plan”), there are 12.4 million shares of Plum Creek Timber Company, Inc. common stock reserved and eligible for issuance. At December 31, 2011, 6.3 million shares of the 12.4 million reserved shares have been used and, therefore, 6.1 million shares remain available for grants of non-qualified stock options, grants of restricted stock and restricted stock units, or payments of vested value management awards. The number of shares to be issued in connection with value management awards is not determined until the end of their respective performance periods. New shares are issued for payment under the Plan for awards that pay out in shares or where the participant can elect payment in shares.

Stock Options. Under the Plan, non-qualified stock options may be granted to any officer, director, employee, consultant or advisor of the Operating Partnership. Each stock option granted allows the recipient the right to purchase Plum Creek’s common stock at the fair market value of Plum Creek’s common stock on the date of the grant. Generally, the stock options have a ten-year term and vest over a four-year period at a rate of 25% per year. Under the Plan, the exercise price of an option may not be reduced. The company does not plan to grant any stock option awards in 2012. Currently, Plum Creek intends to eliminate stock option grants from annual incentive awards and redistribute the value of these grants between Restricted Stock Units and Value Management Awards.

Presented below is a summary of Plum Creek’s stock option Plan activity for the year ended December 31, 2011:

	Shares Subject to Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value (Millions)
Balance at January 1, 2011	3,291,305		$	35.59
Granted	579,350		41.55
Exercised/Surrendered	(327,280	)	30.52
Cancelled/Forfeited	(2,450	)	38.33
Outstanding, December 31, 2011	3,540,925		$	37.03	5.9	$	6
Vested or Expected to Vest, December 31, 2011	3,246,281		$	36.90	5.8	$	6
Exercisable, December 31, 2011	2,164,465		$	36.23	4.5	$	5

The table below presents stock activity related to stock options exercised during the years ended December 31 (in millions): 

	2011		2010		2009
Proceeds from Stock Options Exercised	$	10	$	2	$	—
Intrinsic Value of Stock Options Exercised	$	4	$	1	$	—
Tax Benefit Related to Stock Options Exercised	$	1	$	—	$	—

The weighted-average measurement date fair values of stock option awards granted were computed using the Black-Scholes-Merton option valuation model with the following assumptions for the years ended December 31: 

	2011			2010			2009
Expected Term (years)	6			6			6
Risk-Free Interest Rate	2.7		%	2.7		%	2.0		%
Volatility	40.6		%	40.3		%	35.5		%
Dividend Yield	4.0		%	4.8		%	5.0		%
Weighted-Average Measurement Date Fair Value	$	11.60		$	9.00		$	7.02

The expected term of the options represents the estimated period of time until exercise and is based on the vesting period of the award and the historical exercise experience of similar awards. All participants were assumed to have similar exercise behavior. Expected volatility is based on historical volatility over the approximate expected term of the option.

Restricted Stock. Under the Plan, restricted stock of Plum Creek Timber Company, Inc. may be awarded to certain directors, officers and employees of the Operating Partnership. Restricted stock may not be sold, assigned, transferred, pledged or otherwise disposed of for a period of time from the date on which the restricted stock was granted. The recipients of restricted stock generally have the rights of stockholders of Plum Creek with respect to voting and receipt of dividends during the restricted period. Restricted stock generally vests six months from the grant date. The weighted-average grant date fair values of restricted stock awards granted for the years ended December 31, 2011, 2010 and 2009 were $41.99, $35.60 and $31.32, respectively. The fair value of restricted stock is based on the closing price of Plum Creek’s common stock on the date of grant.

Restricted stock awards activity was as follows for the year ended December 31, 2011:

	Shares		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	—		$	—
Granted	16,000		$	41.99
Vested	(16,000	)	$	41.99
Forfeited	—		$	—
Balance at December 31, 2011	—		$	—

The total fair value of restricted stock awards that vested during the years ended December 31, 2011, 2010 and 2009 was $0.7 million, $0.6 million and $0.6 million, respectively.

Restricted Stock Units. Under the Plan, restricted stock units of Plum Creek Timber Company, Inc. may be awarded to certain directors, officers and employees of the Operating Partnership. The recipients of restricted stock units generally have the right to receive a cash amount equal to any dividends paid on Plum Creek’s common stock during the restriction period and upon vesting, the right to receive an equal number of shares of Plum Creek’s common stock. Restricted stock units generally vest over a four-year period at a rate of 25% per year. If employment is terminated prior to vesting, all unvested restricted stock units are forfeited. The weighted-average grant date fair value of restricted stock units granted for the years ended December 31, 2011, 2010 and 2009 was $41.45, $35.27 and $33.73, respectively. The fair value of restricted stock units is based on the closing price of Plum Creek’s common stock on the date of grant.

Restricted stock unit activity was as follows for the year ended December 31, 2011:

	Units		Weighted- Average Grant Date Fair Value
Balance at January 1, 2011	247,866		$	37.09
Granted	103,760		$	41.45
Vested	(107,386	)	$	38.66
Forfeited	(440	)	$	38.34
Balance at December 31, 2011	243,800		$	38.25

The total fair value of restricted stock units that vested during the years ended December 31, 2011, 2010 and 2009 was approximately $4 million, $3 million and $2 million, respectively.

Value Management Awards. Value management awards provide incentive compensation to participants that is contingent upon Plum Creek’s performance over a three-year period measured separately against the performance of peer groups consisting of forest products companies, the S&P 500 Index and the Morgan Stanley REIT Index over the same period.

Value management awards are earned in whole or in part based on a sliding scale. No value management award is earned if Plum Creek’s total shareholder return is below the 50^th percentile of the peer group. The full value management award is earned if Plum Creek’s total shareholder return is above the 75^th percentile. A unit has a face value of $100. The value of an award between the 50^th and 75^th percentiles is based on a sliding scale between 0% and 200% of the face value. Amounts earned, if any, are paid in the quarter immediately following the end of the three-year performance period. Unless otherwise specified by the participant, each payment will be paid in cash, except that any officer not in compliance with Plum Creek’s stock ownership guidelines is required to receive up to half of the payment value in Plum Creek’s common stock. Generally, to be entitled to the payment, a participant must be employed by the Operating Partnership on the last day of the performance period.

Different performance ranges are expected to be established for the 2012 grant of value management awards. A unit granted in 2012 will have no value below the 25^th percentile and will have full value at the 85^th percentile or above. Performance between the 25^th percentile and the 85^th percentile is expected to be based on a sliding scale between 0% and 200% of face value.

Value management awards activity was as follows for the year ended December 31, 2011:

	Units
Balance at January 1, 2011	211,080
Grants	80,730
Vested	(64,545	)
Forfeitures	(400	)
Balance at December 31, 2011	226,865

Presented below is a summary of outstanding value management awards and related fair values, unrecognized compensation expense and maximum value as of December 31, 2011 (dollars in millions): 

Performance Period	Outstanding Units	Fair Value (A)		Unrecognized Compensation Expense		Maximum Award Value (B)
2009 to 2011	68,945	$	0.0	$	0.0	$	13.8
2010 to 2012	77,340	$	3.0	$	0.9	$	15.5
2011 to 2013	80,580	$	6.4	$	3.6	$	16.1

^(A)  The estimated fair value includes unrecognized compensation expense.

^(B)  Maximum award value is based on a unit value of $200.

Presented below is a summary of earned and paid (primarily in cash) value management awards for the following three-year performance periods: 

Performance Period	Payout Value per Unit		Total Payout (millions)		Payment Date
2009 to 2011	$	0	$	0.0	Not Earned
2008 to 2010	$	0	$	0.0	Not Earned
2007 to 2009	$	200	$	11.1	1st Quarter 2010
2006 to 2008	$	200	$	10.6	1st Quarter 2009

Measurement of Compensation Costs for Value Management Awards. Grants of value management awards are classified and accounted for as liabilities. As a result, the expense recognized over the performance period for value management awards will equal the fair value (i.e., cash value) of an award as of the last day of the performance period multiplied by the number of awards that are earned. The quarterly expense is recognized during the performance period based on the fair value of value management awards as of the end of the most recent quarter. Prior to the end of the performance period, compensation costs for value management awards are based on the awards’ most recent quarterly fair values and the number of months of service rendered during the performance period.

Fair values for value management awards are computed based on Plum Creek’s historical relative total shareholder return compared to the peer group from the beginning of the performance period to the end of the most recent quarter, and its simulated relative total shareholder return through the end of the performance period. The simulated total shareholder return of Plum Creek and the peer group is computed using a Monte Carlo simulation. The key assumptions used in the simulation of Plum Creek’s and the peer group’s total shareholder return are volatility, beta (the measure of how Plum Creek’s stock moves relative to the market as a whole) and risk-free interest rate.

Accounting for Share-Based Compensation. Share-based employee compensation cost is recognized based on fair value (see “Accounting for Share-Based Compensation” in Note 1 of the Notes to Consolidated Financial Statements). Stock options and most restricted stock units vest 25% per year over a four-year vesting period. Compensation cost related to these awards is recognized using the straight-line method over the four-year vesting period. Total compensation expense for all share-based compensation plans (including both awards paid in stock and cash) was approximately $10 million, $5 million and $12 million for the years ended December 31, 2011, 2010, and 2009, respectively. For the years ended December 31, 2011, 2010 and 2009, the Operating Partnership recognized $2 million, $1 million and $2 million, respectively, in tax benefits associated with share-based compensation plans. At December 31, 2011, there was $17 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plan. That cost is expected to be recognized over a weighted-average period of approximately two years.

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Timber and Timberlands (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Timber and Timberlands Tables

Timber and Timberlands consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Timber and Logging Roads, net	$	2,232	$	2,261
Timber Deed	5		—
Timberlands	1,140		1,144
Timber and Timberlands, net	$	3,377	$	3,405

Impairment Losses Table

Impairment losses recorded for the potential sale of timberlands and the associated book basis after the impairment recognition were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Impairment Losses	$	1	$	1	$	3
Book Basis of Property	$	7	$	2	$	33

PLUM CREEK TIMBERLANDS L P [Member]

Timber and Timberlands Tables

Timber and Timberlands consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Timber and Logging Roads, net	$	2,232	$	2,261
Timber Deed	5		—
Timberlands	1,140		1,144
Timber and Timberlands, net	$	3,377	$	3,405

Impairment Losses Table

Impairment losses recorded for the potential sale of timberlands and the associated book basis after the impairment recognition were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Impairment Losses	$	1	$	1	$	3
Book Basis of Property	$	7	$	2	$	33

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Share-Based Compensation Plans (Schedule of Stock Activity Related to Stock Options Exercised During the Period) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Proceeds from Stock Options Exercised	$ 10	$ 2	$ 0
Stock Option [Member] | PLUM CREEK TIMBER CO INC [Member]
Proceeds from Stock Options Exercised	10	2	0
Intrinsic Value of Stock Options Exercised	4	1	0
Tax Benefit Related to Stock Options Exercised	1	0	0
Stock Option [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Proceeds from Stock Options Exercised	10	2	0
Intrinsic Value of Stock Options Exercised	4	1	0
Tax Benefit Related to Stock Options Exercised	$ 1	$ 0	$ 0

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

Contingencies. The company is subject to regulations regarding forest, harvest and manufacturing practices and is, from time to time, involved in various legal proceedings, including environmental and regulatory matters, incidental to its business. Reserves have been established for any probable losses.

Unrecorded Contingencies. Management currently believes that resolving pending legal proceedings against the company, individually or in aggregate, will not have a material adverse impact on our financial position or results of operations. However, these matters are subject to inherent uncertainties and management’s view on these matters may change in the future. Were an unfavorable final outcome in one or multiple legal proceedings to occur, there exists the possibility of a material adverse impact on our financial position and the results of operations for the period in which any unfavorable outcome becomes reasonably estimable.

Contractual Obligations. The company has contracted to source logs and supply fiber with customers under long-term agreements at prevailing market rates. The agreements expire beginning in 2012 through 2029, with various renewal options by either party for periods ranging from two years to fifteen additional years.

Unconditional Purchase Obligations. During 2011, the company entered a long-term agreement for the purchase of urea which will primarily be used in applying fertilizer to our timberlands to improve growth rates. The company is obligated to purchase fixed quantities of urea each year for a fifteen-year period upon the completion of the supplier's manufacturing facility and starting no later than 2014. The price per ton for urea is generally fixed; however, certain components of the price are subject to adjustment for inflation or the cost of raw materials, and the overall price per ton is subject to a cap and floor. Management does not expect these pricing adjustments will be significant and estimates that starting in 2014 annual payments under the supply agreement will be $15 million or $230 million over the life of the purchase agreement.

Lease Commitments. The company leases buildings and equipment under non–cancelable operating lease agreements. Operating lease expense was $3 million, $4 million, and $5 million in 2011, 2010 and 2009, respectively. Additionally, the company has timber obligations related to certain timberlands where the company acquired title to standing timber at the inception of the leases. The following summarizes the future minimum operating lease payments and obligations in connection with leasing timberlands at December 31, 2011 (in millions): 

	Operating Leases		Timber Obligations
2012	$	3	$	1
2013	3		1
2014	2		—
2015	2		—
2016	1		—
Thereafter	1		4
Total	$	12	$	6

PLUM CREEK TIMBERLANDS L P [Member]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

Contingencies. The Operating Partnership is subject to regulations regarding forest, harvest and manufacturing practices and is, from time to time, involved in various legal proceedings, including environmental and regulatory matters, incidental to its business. Reserves have been established for any probable losses.

Unrecorded Contingencies. Management currently believes that resolving pending legal proceedings against the Operating Partnership, individually or in aggregate, will not have a material adverse impact on our financial position or results of operations. However, these matters are subject to inherent uncertainties and management’s view on these matters may change in the future. Were an unfavorable final outcome in one or multiple legal proceedings to occur, there exists the possibility of a material adverse impact on our financial position and the results of operations for the period in which any unfavorable outcome becomes reasonably estimable.

Contractual Obligations. The Operating Partnership has contracted to source logs and supply fiber with customers under long-term agreements at prevailing market rates. The agreements expire beginning in 2012 through 2029, with various renewal options by either party for periods ranging from two years to fifteen additional years.

Unconditional Purchase Obligations. During 2011, the Operating Partnership entered a long-term agreement for the purchase of urea which will primarily be used in applying fertilizer to our timberlands to improve growth rates. The Operating Partnership is obligated to purchase fixed quantities of urea each year for a fifteen-year period upon the completion of the supplier's manufacturing facility and starting no later than 2014. The price per ton for urea is generally fixed; however, certain components of the price are subject to adjustment for inflation or the cost of raw materials, and the overall price per ton is subject to a cap and floor. Management does not expect these pricing adjustments will be significant and estimates that starting in 2014 annual payments under the supply agreement will be $15 million or $230 million over the life of the purchase agreement.

Lease Commitments. The Operating Partnership leases buildings and equipment under non–cancelable operating lease agreements. Operating lease expense was $3 million, $4 million, and $5 million in 2011, 2010 and 2009, respectively. Additionally, the Operating Partnership has timber obligations related to certain timberlands where the Operating Partnership acquired title to standing timber at the inception of the leases. The following summarizes the future minimum operating lease payments and obligations in connection with leasing timberlands at December 31, 2011 (in millions): 

	Operating Leases		Timber Obligations
2012	$	3	$	1
2013	3		1
2014	2		—
2015	2		—
2016	1		—
Thereafter	1		4
Total	$	12	$	6

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Borrowings (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			12 Months Ended								12 Months Ended		12 Months Ended		12 Months Ended						12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Private Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Private Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Public Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Public Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Public Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Public Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Term Credit Agreement 1 [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Term Credit Agreement 1 [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Term Credit Agreement 1 [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Term Credit Agreement 1 [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Term Credit Agreement 1 [Member] Minimum [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Term Credit Agreement 1 [Member] Minimum [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Term Credit Agreement 1 [Member] Maximum [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Term Credit Agreement 1 [Member] Maximum [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71% [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71% [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71% [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71% [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10% [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10% [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10% [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10% [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Note Payable to Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 Note Payable to Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Note Payable to Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Line of Credit [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Line of Credit [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Line of Credit [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Line of Credit [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Line of Credit [Member] Minimum [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Line of Credit [Member] Minimum [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Line of Credit [Member] Maximum [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Line of Credit [Member] Maximum [Member] PLUM CREEK TIMBERLANDS L P [Member]	Jan. 03, 2012 Debt [Member] Line of Credit [Member] PLUM CREEK TIMBER CO INC [Member]	Jan. 03, 2012 Debt [Member] Line of Credit [Member] PLUM CREEK TIMBERLANDS L P [Member]
Line of Credit																															$ 600		$ 600
Letters of Credit Outstanding, Amount																															2		2
Debt Instrument, Maturity Date												Jul. 10, 2012		Jul. 10, 2012						Mar. 15, 2021		Mar. 15, 2021		Nov. 15, 2015		Nov. 15, 2015		Oct. 01, 2018			Jan. 30, 2015		Jan. 30, 2015
Line Of Credit, Weighted-average interest rate																															1.71%	1.95%	1.71%	1.95%
Line of Credit, Interest Rate Terms																															LIBOR plus 1.50%		LIBOR plus 1.50%		LIBOR plus 1.275%	LIBOR plus 1.275%	LIBOR plus 2%	LIBOR plus 2%
Line of Credit Facility, Commitment Fee Percentage																															0.25%		0.25%
Letter of Credit, Standby																															100		100
Line of Credit, Outstanding	348	166		348	166																										348	166	348	166
Line of Credit, Remained available																															250		250
Payment of Line of Credit																																							251	251
Total	2,773	2,686		1,990	1,903							350	350	350	350					575	575	575	575	454	454	454	454	783		783
Senior Notes	1,292	1,387		1,292	1,387	263	263	1,029	1,029	1,029	1,029									575		575		458		458
Partnership subsidiary debt	263			263
Stated Interest Rate																				4.70%		4.70%		5.875%		5.875%
Redemption premium due up early retirement of senior notes	237	164		237	164
Term Credit Agreement, Interest												0.65%		0.65%
Term Credit Agreement, Interest rate terms												LIBOR plus 0.375%		LIBOR plus 0.375%		LIBOR plus 0.3%	LIBOR plus 0.3%	LIBOR plus 1.15%	LIBOR plus 1.15%
Note Payable to Timberland Venture	$ 783	$ 783	$ 783																									$ 783	$ 783
Note Payable Interest rate																												7.375%	7.375%

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Related Party Transactions (Narrative) (Details) (USD $) In Millions, unless otherwise specified				12 Months Ended
	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2008 PC Ventures [Member]	Dec. 31, 2011 Note Payable to Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 Note Payable to Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member]
Amount borrowed from the Timberland Venture	$ 783	$ 783	$ 783		$ 783	$ 783	$ 783
Note Payable Interest rate					7.375%	7.375%	7.375%
Proceeds from Partnership Contribution				$ 783

XML

Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 193	$ 213	$ 236
PLUM CREEK TIMBER CO INC [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	193	213	236
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Depreciation, Depletion and Amortization (Includes $10 Lumber Impairment Loss in 2009)	96	96	109
Basis of Real Estate Sold	77	132	155
Equity Earnings from Timberland Venture	(56)	(57)	(55)
Distributions from Timberland Venture	56	57	53
Deferred Income Taxes	0	1	(14)
Gain on Sale of Properties and Other Assets	0	(13)	0
Loss on Extinguishment of Debt	0	13	2
Deferred Revenue from Long-Term Gas Leases (Net of Amortization)	11	3	(6)
Timber Deed Acquired	(5)	0	0
Pension Plan Contributions	(3)	(4)	(10)
Working Capital Changes Impacting Cash Flow:
Like-Kind Exchange Funds	0	0	48
Income Tax Receivable	(1)	13	8
Other Working Capital Changes	(7)	(17)	5
Other	13	12	9
Net Cash Provided By Operating Activities	374	449	540
CASH FLOWS FROM INVESTING ACTIVITIES
Capital Expenditures (Excluding Timberland Acquisitions)	(70)	(71)	(61)
Timberlands and Minerals Acquired	(101)	0	(1)
Proceeds from Sale of Properties and Other Assets	0	13	1
Purchases of Marketable Securities	0	(2)	(3)
Other	0	2	0
Net Cash Used In Investing Activities	(171)	(58)	(64)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends	(272)	(272)	(275)
Borrowings on Line of Credit	1,921	1,783	1,073
Repayments on Line of Credit	(1,739)	(1,937)	(984)
Proceeds from Issuance of Long-term Debt	0	575	0
Debt Issuance Costs	0	(7)	0
Principal Payments and Retirement of Long-Term Debt	(95)	(531)	(273)
Proceeds from Stock Options Exercises	10	2	0
Acquisition of Treasury Stock	(26)	(51)	(87)
Net Cash Used In Financing Activities	(201)	(438)	(546)
Increase (Decrease) In Cash and Cash Equivalents	2	(47)	(70)
Cash and Cash Equivalents:
Beginning of Period	252	299	369
End of Period	254	252	299
Supplemental Cash Flow Information [Abstract]
Interest - Debt Obligations To Unrelated Parties	76	80	93
Interest - Note Payable to Timberland Venture	58	58	58
Interest - Net	134	138	151
Income Taxes - Net	0	(15)	(18)
PLUM CREEK TIMBERLANDS L P [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income before Allocation to Series T-1 Preferred Interest and Partners	251	271	294
Net Income	193	213	236
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Depreciation, Depletion and Amortization (Includes $10 Lumber Impairment Loss in 2009)	96	96	109
Basis of Real Estate Sold	77	132	155
Equity Earnings from Timberland Venture	(56)	(57)	(55)
Distributions from Timberland Venture	56	57	53
Deferred Income Taxes	0	1	(14)
Gain on Sale of Properties and Other Assets	0	(13)	0
Loss on Extinguishment of Debt	0	13	2
Deferred Revenue from Long-Term Gas Leases (Net of Amortization)	11	3	(6)
Timber Deed Acquired	(5)	0	0
Pension Plan Contributions	(3)	(4)	(10)
Working Capital Changes Impacting Cash Flow:
Like-Kind Exchange Funds	0	0	48
Income Tax Receivable	(1)	13	8
Other Working Capital Changes	(7)	(17)	5
Other	13	12	9
Net Cash Provided By Operating Activities	432	507	598
CASH FLOWS FROM INVESTING ACTIVITIES
Capital Expenditures (Excluding Timberland Acquisitions)	(70)	(71)	(61)
Timberlands and Minerals Acquired	(101)	0	(1)
Proceeds from Sale of Properties and Other Assets	0	13	1
Purchases of Marketable Securities	0	(2)	(3)
Other	0	2	0
Net Cash Used In Investing Activities	(171)	(58)	(64)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash Distributions to Common Partners	(288)	(321)	(362)
Cash Distributions for Series T-1 Preferred Interest	(58)	(58)	(58)
Borrowings on Line of Credit	1,921	1,783	1,073
Repayments on Line of Credit	(1,739)	(1,937)	(984)
Proceeds from Issuance of Long-term Debt	0	575	0
Debt Issuance Costs	0	(7)	0
Principal Payments and Retirement of Long-Term Debt	(95)	(531)	(273)
Net Cash Used In Financing Activities	(259)	(496)	(604)
Increase (Decrease) In Cash and Cash Equivalents	2	(47)	(70)
Cash and Cash Equivalents:
Beginning of Period	252	299	369
End of Period	254	252	299
Supplemental Cash Flow Information [Abstract]
Interest - Net	76	80	93
Income Taxes - Net	$ 0	$ (15)	$ (18)

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Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net Income	$ 193	$ 213	$ 236
PLUM CREEK TIMBER CO INC [Member]
Net Income	193	213	236
Actuarial Gain/(Loss)	(31)	6	3
Plus: Reclassification to Net Income for Actuarial Gains or Losses	2	2	7
Unrealized Holding Gains (Losses)	(1)	2	5
Less: Reclassification to Net Income for Realized Gains or Losses	0	0	0
Other Comprehensive Income (Loss), before Tax	(30)	10	15
Other Comprehensive Income (Loss), Tax	(6)	2	3
Other Comprehensive Income (Loss), Net of Tax	(24)	8	12
Total Comprehensive Income	169	221	248
PLUM CREEK TIMBERLANDS L P [Member]
Net Income	193	213	236
Net Income before Allocation to Series T-1 Preferred Interest and Partners	251	271	294
Actuarial Gain/(Loss)	(31)	6	3
Plus: Reclassification to Net Income for Actuarial Gains or Losses	2	2	7
Unrealized Holding Gains (Losses)	(1)	2	5
Less: Reclassification to Net Income for Realized Gains or Losses	0	0	0
Other Comprehensive Income (Loss), before Tax	(30)	10	15
Other Comprehensive Income (Loss), Tax	(6)	2	3
Other Comprehensive Income (Loss), Net of Tax	(24)	8	12
Total Comprehensive Income	$ 227	$ 279	$ 306

XML

Restricted Net Assets (PLUM CREEK TIMBER CO INC [Member])

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Condensed Financial Information of Parent Company Only Disclosure [Text Block]

RESTRICTED NET ASSETS

Plum Creek Timber Company, Inc. is the direct parent company of Plum Creek Timberlands, L.P. (“Partnership”) and Plum Creek Ventures I, LLC (“PC Ventures”), and the indirect parent of all the subsidiaries of the consolidated group. Plum Creek Timber Company, Inc. has no assets or liabilities other than its ownership interest in the Partnership and PC Ventures. During 2008, PC Ventures borrowed $783 million from an entity in which the Partnership has an equity interest. See Notes 8, 16 and 17 of the Notes to Consolidated Financial Statements. PC Ventures also has an ownership interest in the Partnership, and as a result, interest payments for this borrowing are funded by distributions to PC Ventures from the Partnership. PC Ventures has no other activities.

The Partnership is restricted from transferring assets and funds in the form of loans, advances or cash dividends to Plum Creek Timber Company, Inc. under the terms of certain debt agreements (see Note 8 of the Notes to Consolidated Financial Statements). Subject to certain restrictions, the Partnership can make loans or advances to Plum Creek Timber Company, Inc. Based on these provisions, at December 31, 2011, all of the Partnership’s Cash and Cash Equivalents ($254 million) are available to make restricted payments. At December 31, 2011, the Partnership and its consolidated subsidiaries had net assets of $1,263 million of which $1,009 million were restricted from being transferred by the Partnership to Plum Creek Timber Company, Inc.

Presented below is the condensed unconsolidated financial information for Plum Creek Timber Company, Inc. as of December 31, 2011 and 2010 and for each of the years in the three-year period ended December 31, 2011. The ownership of the Partnership and PC Ventures is presented using the equity method of accounting. As of December 31, 2011 and 2010, the undistributed earnings included in retained earnings (accumulated deficit) from an entity accounted for by the equity method were $17 million and $17 million, respectively.

Plum Creek Timber Company, Inc.

Condensed Unconsolidated Balance Sheet Data

(In Millions)	December 31, 2011			December 31, 2010
Assets
Investment in Consolidated Subsidiaries	$	1,263		$	1,374
Total Assets	$	1,263		$	1,374
Liabilities
Total Liabilities	$	—		$	—
Commitments and Contingencies
Stockholders’ Equity
Common Stock	2			2
Additional Paid-In Capital	2,261			2,243
Retained Earnings (Accumulated Deficit) and Other Equity	(28		)	51
Treasury Stock, at cost	(937		)	(911		)
Accumulated Other Comprehensive Income (Loss)	(35		)	(11		)
Total Stockholders’ Equity	1,263			1,374
Total Liabilities and Equity	$	1,263		$	1,374

Plum Creek Timber Company, Inc.

Condensed Unconsolidated Statements of Income Data

	Year Ended
(In Millions)	December 31, 2011		December 31, 2010		December 31, 2009
Equity Earnings from Consolidated Subsidiaries	$	193	$	213	$	236
Net Income	$	193	$	213	$	236

Plum Creek Timber Company, Inc.

Condensed Unconsolidated Statements of Cash Flows Data

	Year Ended
(In Millions)	December 31, 2011			December 31, 2010			December 31, 2009
Cash Flows from Operating Activities:
Net Income	$	193		$	213		$	236
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Equity Earnings from Consolidated Subsidiaries	(193		)	(213		)	(236		)
Net Cash Provided By (Used In) Operating Activities	—			—			—
Net Cash Provided By (Used In) Investing Activities	—			—			—
Cash Flows From Financing Activities:
Cash Dividends	(272		)	(272		)	(275		)
Cash Distribution from Plum Creek Timberlands, L.P.	288			321			362
Proceeds from Stock Option Exercises	10			2			—
Acquisition of Treasury Stock	(26		)	(51		)	(87		)
Net Cash Provided By (Used In) Financing Activities	—			—			—
Increase In Cash and Cash Equivalents	—			—			—
Cash and Cash Equivalents:
Beginning of Year	—			—			—
End of Year	$	—		$	—		$	—

XML

Detail of Certain Balance Sheet Accounts (Schedule of Details of Certain Balance Sheet Accounts)(Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid Expense, Current	$ 7	$ 6
Taxes Receivable	3	2
Notes Receivable	2	5
Cash Held In Escrow	0	9
Other Assets, Miscellaneous, Current	3	2
Total Other Current Assets	15	24
Other Assets, Noncurrent [Abstract]
Real Estate Development Properties	13	14
Unamortized Debt Issue Costs	8	11
Deposits	5	5
Notes Receivable	8	10
Other Assets, Miscellaneous, Noncurrent	2	4
Total Other Non-Current Assets	36	44
Other Liabilities, Current [Abstract]
Accrued Pension Liability	4	3
Workers' Compensation	2	2
Other Liabilities Miscellaneous, Current	2	2
Total Other Current Liabilities	8	7
Other Liabilities, Noncurrent [Abstract]
Timber Obligations	6	6
Deferred Compensation	5	5
Long-Term Incentive Compensation	3	2
Accrued Pension Liability	60	26
Deferred Revenue	20	22
Workers' Compensation	10	10
Other Liabilities Miscellaneous, Noncurrent	4	5
Total Other Non-Current Liabilities	108	76
PLUM CREEK TIMBERLANDS L P [Member]
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid Expense, Current	7	6
Taxes Receivable	3	2
Notes Receivable	2	5
Cash Held In Escrow	0	9
Other Assets, Miscellaneous, Current	3	2
Total Other Current Assets	15	24
Other Assets, Noncurrent [Abstract]
Real Estate Development Properties	13	14
Unamortized Debt Issue Costs	8	11
Deposits	5	5
Notes Receivable	8	10
Other Assets, Miscellaneous, Noncurrent	2	4
Total Other Non-Current Assets	36	44
Other Liabilities, Current [Abstract]
Accrued Pension Liability	4	3
Workers' Compensation	2	2
Other Liabilities Miscellaneous, Current	2	2
Total Other Current Liabilities	8	7
Other Liabilities, Noncurrent [Abstract]
Timber Obligations	6	6
Deferred Compensation	6	6
Long-Term Incentive Compensation	3	2
Accrued Pension Liability	60	26
Deferred Revenue	20	22
Workers' Compensation	10	10
Other Liabilities Miscellaneous, Noncurrent	4	5
Total Other Non-Current Liabilities	$ 109	$ 77

XML

Employee Pension and Retirement Plans (Weighted Average Assumption Used to Determine Net Periodic Benefit Cost) (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Discount Rate	5.90%	5.90%	6.85%
Expected Long-Term Return on Plan Assets	7.50%	7.75%	7.75%
Rate of Compensation Increase	3.45%	3.45%	3.70%
PLUM CREEK TIMBERLANDS L P [Member]
Discount Rate	5.90%	5.90%	6.85%
Expected Long-Term Return on Plan Assets	7.50%	7.75%	7.75%
Rate of Compensation Increase	3.45%	3.45%	3.70%

XML

Employee Pension and Retirement Plans (Amounts Included in Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Net Actuarial Loss (Gain)	$ 53	$ 24
Deferred Tax Benefit	(12)	(6)
PLUM CREEK TIMBERLANDS L P [Member]
Net Actuarial Loss (Gain)	53	24
Deferred Tax Benefit	$ (12)	$ (6)

XML

Unaudited Selected Quarterly Financial Data (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended			3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Mar. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2009 PLUM CREEK TIMBER CO INC [Member]	Mar. 31, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2009 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Private Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Private Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Private Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Private Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Private Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Private Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 Senior Notes Maturing Fourth Quarter2011 [Member] Private Debt [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 Senior Notes Maturing Fourth Quarter2011 [Member] Private Debt [Member] PLUM CREEK TIMBERLANDS L P [Member]
Gain on Sales of Properties	$ 0	$ 11	$ 0	$ 11	$ 0	$ 11	$ 0	$ 11	$ 0	$ 11	$ 0
Gain on Sale of Properties per Diluted Share				$ 0.07
Amount Paid to Retire Senior Debt												226			226
Principal Amount of Senior Debt					95	519			95	519		269	269	95	269	269	95	213	213
Loss on Extinguishment of Debt					$ 0	$ (13)	$ (2)		$ 0	$ (13)	$ (2)	$ 13	$ 13		$ 13	$ 13

XML

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2011	Feb. 15, 2012	Jun. 30, 2011
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Entity Registrant Name	PLUM CREEK TIMBER CO INC
Entity Central Index Key	0000849213
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		161,406,910
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 6,543,356,610
PLUM CREEK TIMBERLANDS L P [Member]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Entity Registrant Name	Plum Creek Timberlands LP
Entity Central Index Key	0001296350
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

XML

Fair Value Measurements

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

Assets and Liabilities Measured at Fair Value on a Recurring Basis. The company’s fair value measurements of its financial instruments, measured on a recurring basis, are categorized as Level 1 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 1 valuation is based on quoted prices in active markets at the measurement date for identical unrestricted assets or liabilities. Summarized below are the Level 1 assets reported in the company’s financial statements at fair value, measured on a recurring basis (in millions):

	Balance at December 31, 2011		Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	253	$	253
Available-for-Sale Securities (B)	31		31
Trading Securities (B)	5		5
Total	$	289	$	289
	Balance at December 31, 2010		Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	249	$	249
Available-for-Sale Securities (B)	30		30
Trading Securities (B)	5		5
Total	$	284	$	284

^(A)  Consists of several money market funds and is included in the $254 million and $252 million of Cash and Cash Equivalents in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010, respectively.

^(B)  Consists of several mutual funds and is included in Investment in Grantor Trusts in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010. At December 31, 2011, investments in these mutual funds were approximately 45% in domestic (U.S.) equities, 25% in international equities and 30% in debt securities.

Available-for-Sale Securities. Certain investments in the grantor trusts relate to the company's non-qualified pension plans and are classified as available-for-sale securities. The company has invested in various money market, debt and equity mutual funds and plans to use these investments to fund its non-qualified pension obligations. Unrealized holding gains and losses are included as a component of accumulated other comprehensive income. The company records changes in unrealized holding gains and losses in Other Comprehensive Income, unless an other than temporary impairment has occurred, which is then charged to expense. Changes in the fair value of available-for-sale securities were not material to the company's financial position or results of operations. See Note 11 of the Notes to Consolidated Financial Statements.

Trading Securities. Certain investments in the grantor trusts relate to the company's deferred compensation plans and are classified as trading securities. Deferred compensation amounts are invested in various money market, debt and equity mutual funds. The company plans to use these investments to fund deferred compensation obligations. Realized gains and losses and changes in unrealized gains and losses (and a corresponding amount of compensation expense) are recognized in the company's Consolidated Statements of Income. Deferred compensation obligations are included in Other Liabilities and were $5 million at December 31, 2011 and $5 million at December 31, 2010. Changes in the fair value of trading securities were not material to the company's financial position or results of operations.

Other Instruments. The carrying amount of notes receivable approximates fair value due to the short-term maturities of these instruments. The estimated fair value of the company's debt was approximately $2.98 billion and $2.83 billion at December 31, 2011 and December 31, 2010, respectively, and the carrying amount was $2.77 billion and $2.69 billion at December 31, 2011 and December 31, 2010, respectively. The fair value of the company's Public Debt (publicly issued Senior Notes) is estimated using market quotes. The fair value of the company's Private Debt (Senior Notes with various maturities and fixed interest rates which are privately placed with various lenders) is estimated using the same rates adjusted for the different maturities. The fair value of the company's Note Payable to Timberland Venture is estimated using the same rates as the Public Debt adjusted by an estimated risk premium for holding company debt and the different maturity. The fair value of our Term Credit Agreement was determined by adjusting the spread over LIBOR to a current market spread for comparable debt.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis. The company’s fair value measurements of its assets and liabilities, measured on a nonrecurring basis, are categorized as Level 3 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 3 valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

There were no fair value measurements of assets or liabilities measured on a nonrecurring basis during the year ended December 31, 2011.

Summarized below are the Level 3 assets and liabilities reported in the company’s financial statements at fair value, measured on a nonrecurring basis, during the year ended December 31, 2010 (in millions):

	2010		Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements)		Net Gain (Loss)
Timberlands Held for Sale (A)	$	2	$	2	$	(1	)
Total					$	(1	)

^(A)  During 2010, timberlands held for sale with a carrying value of $3 million were written down to their fair value (net of estimated selling costs) of $2 million, resulting in a loss of $1 million, which was included in earnings for the year ended December 31, 2010. These timberlands were sold in 2011. The fair value was based on an external appraisal which was derived from a combination of comparable sales and discounted future cash flows. The discounted future cash flows were based on estimated future timber prices and related operating expenses using internal and external projections.

PLUM CREEK TIMBERLANDS L P [Member]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

Assets and Liabilities Measured at Fair Value on a Recurring Basis. The Operating Partnership’s fair value measurements of its financial instruments, measured on a recurring basis, are categorized as Level 1 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 1 valuation is based on quoted prices in active markets at the measurement date for identical unrestricted assets or liabilities. Summarized below are the Level 1 assets reported in the Operating Partnership’s financial statements at fair value, measured on a recurring basis (in millions):

	Balance at December 31, 2011		Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	253	$	253
Available-for-Sale Securities (B)	31		31
Trading Securities (B)	5		5
Total	$	289	$	289
	Balance at December 31, 2010		Fair Value Measurements at Reporting Date Using Quoted Prices in Active   Markets of Identical Assets (Level 1 Measurements)
Cash Equivalents (A)	$	249	$	249
Available-for-Sale Securities (B)	30		30
Trading Securities (B)	5		5
Total	$	284	$	284

^(A)  Consists of several money market funds and is included in the $254 million and $252 million of Cash and Cash Equivalents in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010, respectively.

^(B)  Consists of several mutual funds and is included in Investment in Grantor Trusts in the Consolidated Balance Sheets at December 31, 2011 and December 31, 2010. At December 31, 2011, investments in these mutual funds were approximately 45% in domestic (U.S.) equities, 25% in international equities and 30% in debt securities.

Available-for-Sale Securities. Certain investments in the grantor trusts relate to the Operating Partnership's non-qualified pension plans and are classified as available-for-sale securities. The Operating Partnership has invested in various money market, debt and equity mutual funds and plans to use these investments to fund its non-qualified pension obligations. Unrealized holding gains and losses are included as a component of accumulated other comprehensive income. The Operating Partnership records changes in unrealized holding gains and losses in Other Comprehensive Income, unless an other than temporary impairment has occurred, which is then charged to expense. Changes in the fair value of available-for-sale securities were not material to the Operating Partnership's financial position or results of operations. See Note 8 of the Notes to Consolidated Financial Statements.

Trading Securities. Certain investments in the grantor trusts relate to the Operating Partnership's deferred compensation plans and are classified as trading securities. Deferred compensation amounts are invested in various money market, debt and equity mutual funds. The Operating Partnership plans to use these investments to fund deferred compensation obligations. Realized gains and losses and changes in unrealized gains and losses (and a corresponding amount of compensation expense) are recognized in the Operating Partnership's Consolidated Statements of Income. Deferred compensation obligations are included in Other Liabilities and were $5 million at December 31, 2011 and $5 million at December 31, 2010. Changes in the fair value of trading securities were not material to the Operating Partnership's financial position or results of operations.

Other Instruments. The carrying amount of notes receivable approximates fair value due to the short-term maturities of these instruments. The estimated fair value of the Operating Partnership's debt was approximately $2.06 billion and $1.95 billion at December 31, 2011 and December 31, 2010, respectively, and the carrying amount was $1.99 billion and $1.90 billion at December 31, 2011 and December 31, 2010, respectively. The fair value of the Operating Partnership's Public Debt (publicly issued Senior Notes) is estimated using market quotes. The fair value of the Operating Partnership's Private Debt (Senior Notes with various maturities and fixed interest rates which are privately placed with various lenders) is estimated using the same rates adjusted for the different maturities. The fair value of our Term Credit Agreement was determined by adjusting the spread over LIBOR to a current market spread for comparable debt.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis. The Operating Partnership’s fair value measurements of its assets and liabilities, measured on a nonrecurring basis, are categorized as Level 3 measurements under the fair value hierarchy in the Accounting Standards Codification. A Level 3 valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

There were no fair value measurements of assets or liabilities measured on a nonrecurring basis during the year ended December 31, 2011.

Summarized below are the Level 3 assets and liabilities reported in the Operating Partnership’s financial statements at fair value, measured on a nonrecurring basis, during the year ended December 31, 2010 (in millions):

	2010		Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements)		Net Gain (Loss)
Timberlands Held for Sale (A)	$	2	$	2	$	(1	)
Total					$	(1	)

^(A)  During 2010, timberlands held for sale with a carrying value of $3 million were written down to their fair value (net of estimated selling costs) of $2 million, resulting in a loss of $1 million, which was included in earnings for the year ended December 31, 2010. These timberlands were sold in 2011. The fair value was based on an external appraisal which was derived from a combination of comparable sales and discounted future cash flows. The discounted future cash flows were based on estimated future timber prices and related operating expenses using internal and external projections.

XML

Stockholders' Equity (Stockholders Equity) (Details) (PLUM CREEK TIMBER CO INC [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Shares of Common Stock	0.7	1.4	3.3
Stock Repurchased During Period Under Board Plan Value	$ 25	$ 50	$ 87
Average Cost per Share	$ 34.84	$ 36.37	$ 26.57

XML

Employee Pension and Retirement Plans (Components of Pension Cost Recognized in Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Net Actuarial (Gain) Loss Recognized in Comprehensive Income	$ 31	$ (6)	$ (3)
Amortization of the Net Actuarial Gain or Loss	(2)	(2)	(7)
Amortization of the Net Actuarial Gain or Loss, Excluding Settlements			(2)
Effect of Settlements and Curtailments	0	0	(5)
Total (Gain) Loss Recognized in Other Comprehensive Income	29	(8)	(10)
Combined Pension Cost Recognized in Comprehensive Income	38	0	4
PLUM CREEK TIMBERLANDS L P [Member]
Net Actuarial (Gain) Loss Recognized in Comprehensive Income	31	(6)	(3)
Amortization of the Net Actuarial Gain or Loss	(2)	(2)	(7)
Amortization of the Net Actuarial Gain or Loss, Excluding Settlements			(2)
Effect of Settlements and Curtailments	0	0	(5)
Total (Gain) Loss Recognized in Other Comprehensive Income	29	(8)	(10)
Combined Pension Cost Recognized in Comprehensive Income	$ 38	$ 0	$ 4

XML

Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Assets
Cash and Cash Equivalents	$ 254	$ 252
Accounts Receivable	28	21
Inventories	48	49
Deferred Tax Asset	6	7
Assets Held for Sale	103	57
Other Current Assets	15	24
Total Current Assets	454	410
Timber and Timberlands, net	3,377	3,405
Property, Plant and Equipment, net	138	146
Equity Investment in Timberland Venture	201	201
Deferred Tax Asset	17	10
Investment in Grantor Trusts (at Fair Value)	36	35
Other Assets	36	44
Total Assets	4,259	4,251
Liabilities
Current Portion of Long-Term Debt	352	94
Line of Credit	348	166
Accounts Payable	25	25
Interest Payable	26	23
Wages Payable	20	23
Taxes Payable	9	12
Deferred Revenue	27	25
Other Current Liabilities	8	7
Total Current Liabilities	815	375
Long-Term Debt	1,290	1,643
Note Payable to Timberland Venture	783	783
Other Liabilities	108	76
Total Liabilities	2,996	2,877
Commitments and Contingencies
Stockholders' Equity
Preferred Stock, $0.01 Par Value, Authorized Shares - 75.0, Outstanding - None	0	0
Common Stock, $0.01 Par Value, Authorized Shares - 300.6, Outstanding (net of Treasury Stock) - 161.3 at December 31, 2011 and 161.6 at December 31, 2010	2	2
Additional Paid-In Capital	2,261	2,243
Retained Earnings (Accumulated Deficit)	(28)	51
Treasury Stock, at Cost, Common Shares - 26.9 at December 31, 2011 and 26.2 at December 31, 2010	(937)	(911)
Accumulated Other Comprehensive Income (Loss)	(35)	(11)
Total Stockholders' Equity	1,263	1,374
Total Liabilities and Stockholders' Equity	4,259	4,251
PLUM CREEK TIMBERLANDS L P [Member]
Assets
Cash and Cash Equivalents	254	252
Accounts Receivable	28	21
Inventories	48	49
Deferred Tax Asset	6	7
Assets Held for Sale	103	57
Other Current Assets	15	24
Total Current Assets	454	410
Timber and Timberlands, net	3,377	3,405
Property, Plant and Equipment, net	138	146
Equity Investment in Timberland Venture	201	201
Deferred Tax Asset	17	10
Investment in Grantor Trusts (at Fair Value)	37	36
Other Assets	36	44
Total Assets	4,260	4,252
Liabilities
Current Portion of Long-Term Debt	352	94
Line of Credit	348	166
Accounts Payable	25	25
Interest Payable	19	16
Wages Payable	20	23
Taxes Payable	9	12
Deferred Revenue	27	25
Other Current Liabilities	8	7
Total Current Liabilities	808	368
Long-Term Debt	1,290	1,643
Other Liabilities	109	77
Total Liabilities	2,207	2,088
Commitments and Contingencies
Stockholders' Equity
Accumulated Other Comprehensive Income (Loss)	(35)	(11)
PARTNERSHIP CAPITAL
Series T-1 Preferred Interest	790	790
Partners' Capital (Common Partnership Interests)	1,263	1,374
Total Partnership Capital	2,053	2,164
Total Liabilities and Partnership Capital	$ 4,260	$ 4,252

XML

Timber and Timberlands

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Timber and Timberlands

TIMBER AND TIMBERLANDS

Timber and Timberlands consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Timber and Logging Roads, net	$	2,232	$	2,261
Timber Deed	5		—
Timberlands	1,140		1,144
Timber and Timberlands, net	$	3,377	$	3,405

During 2011, the company acquired approximately 59,000 acres of timberlands primarily located in Alabama and Georgia and mineral reserves in Oregon for a total of $101 million. These purchases were financed primarily from our line of credit and have been accounted for as asset acquisitions. Timberland dispositions during 2011 were approximately 185,000 acres, of which 45,000 acres were located in the Northern Resources Segment and 140,000 acres were located in the Southern Resources Segment.

Timberland dispositions during 2010 were approximately 258,000 acres, of which 142,000 acres were located in the Northern Resources Segment and 116,000 acres were located in the Southern Resources Segment. Included in the 142,000 acres of Northern Resources timberland dispositions are approximately 70,000 acres sold in Montana for proceeds of $89 million and operating income of $37 million from the third phase of a multi-period contract. In connection with this multi-period transaction, we also entered into a fiber supply agreement for these timberlands (for up to 15 years) at market-based prices to supply our manufacturing facilities.

In January 2012, the company purchased a timber deed in the Southern Resources Segment for $103 million, $5 million of which was paid as a deposit in December 2011. The timber deed encompasses approximately 4.7 million tons of standing timber and will be harvested over the eight-year term of the deed. The timber deed purchase price has been and will be reflected in our Consolidated Statements of Cash Flows as an outflow under Cash Provided by Operating Activities.

The company's Real Estate Segment revenue consists of sales of higher and better use timberlands and sales of non-strategic timberland. Occasionally, timberlands are sold at a loss. Each potential real estate sale is evaluated for a possible impairment in accordance with the accounting for long-lived assets classified as held for sale. At December 31, 2011, the book basis of real estate held for sale was $103 million and was $57 million as of December 31, 2010. Impairment losses are included in Cost of Goods Sold for Real Estate in our Consolidated Statements of Income.

Impairment losses recorded for the potential sale of timberlands and the associated book basis after the impairment recognition were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Impairment Losses	$	1	$	1	$	3
Book Basis of Property	$	7	$	2	$	33

The fair value of the impaired assets was primarily determined based on external appraisals which were derived from a combination of comparable sales and discounted future cash flows.

PLUM CREEK TIMBERLANDS L P [Member]

Timber and Timberlands

TIMBER AND TIMBERLANDS

Timber and Timberlands consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Timber and Logging Roads, net	$	2,232	$	2,261
Timber Deed	5		—
Timberlands	1,140		1,144
Timber and Timberlands, net	$	3,377	$	3,405

During 2011, the Operating Partnership acquired approximately 59,000 acres of timberlands primarily located in Alabama and Georgia and mineral reserves in Oregon for a total of $101 million. These purchases were financed primarily from our line of credit and have been accounted for as asset acquisitions. Timberland dispositions during 2011 were approximately 185,000 acres, of which 45,000 acres were located in the Northern Resources Segment and 140,000 acres were located in the Southern Resources Segment.

Timberland dispositions during 2010 were approximately 258,000 acres, of which 142,000 acres were located in the Northern Resources Segment and 116,000 acres were located in the Southern Resources Segment. Included in the 142,000 acres of Northern Resources timberland dispositions are approximately 70,000 acres sold in Montana for proceeds of $89 million and operating income of $37 million from the third phase of a multi-period contract. In connection with this transaction, we also entered into a fiber supply agreement for these timberlands (for up to 15 years) at market-based prices to supply our manufacturing facilities.

In January 2012, the Operating Partnership purchased a timber deed in the Southern Resources Segment for $103 million, $5 million of which was paid as a deposit in December 2011. The timber deed encompasses approximately 4.7 million tons of standing timber and will be harvested over the eight-year term of the deed. The timber deed purchase price has been and will be reflected in our Consolidated Statements of Cash Flows as an outflow under Cash Provided by Operating Activities.

The Operating Partnership’s Real Estate Segment revenue consists of sales of higher and better use timberlands and sales of non-strategic timberland. Occasionally, timberlands are sold at a loss. Each potential real estate sale is evaluated for a possible impairment in accordance with the accounting for long-lived assets classified as held for sale. At December 31, 2011, the book basis of real estate held for sale was $103 million and was $57 million as of December 31, 2010. Impairment losses are included in Cost of Goods Sold for Real Estate in our Consolidated Statements of Income. Impairment losses recorded for the potential sale of timberlands and the associated book basis after the impairment recognition were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Impairment Losses	$	1	$	1	$	3
Book Basis of Property	$	7	$	2	$	33

The fair value of the impaired assets was primarily determined based on external appraisals which were derived from a combination of comparable sales and discounted future cash flows.

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Inventories

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Inventories

INVENTORIES

Inventories, accounted for using the lower of average cost or market, consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Raw Materials (primarily logs)	$	10	$	12
Work-In-Process	1		1
Finished Goods	24		24
	35		37
Supplies	13		12
Total	$	48	$	49

PLUM CREEK TIMBERLANDS L P [Member]

Inventories

INVENTORIES

Inventories, accounted for using the lower of average cost or market, consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Raw Materials (primarily logs)	$	10	$	12
Work-In-Process	1		1
Finished Goods	24		24
	35		37
Supplies	13		12
Total	$	48	$	49

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Detail of Certain Balance Sheet Accounts

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Detail of Certain Balance Sheet Accounts

DETAIL OF CERTAIN BALANCE SHEET ACCOUNTS

Certain balance sheet accounts consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Other Current Assets
Prepaid Expenses	$	7	$	6
Taxes Receivable	3		2
Notes Receivable	2		5
Cash Held in Escrow	—		9
Other	3		2
	$	15	$	24
Other Non-Current Assets
Real Estate Development Properties	$	13	$	14
Unamortized Debt Issue Costs	8		11
Deposits	5		5
Notes Receivable	8		10
Other	2		4
	$	36	$	44
Other Current Liabilities
Accrued Pension Liability	$	4	$	3
Workers’ Compensation	2		2
Other	2		2
	$	8	$	7
Other Non-Current Liabilities
Timber Obligations	$	6	$	6
Deferred Compensation	5		5
Long-Term Incentive Compensation	3		2
Accrued Pension Liability	60		26
Deferred Revenue	20		22
Workers’ Compensation	10		10
Other	4		5
	$	108	$	76

PLUM CREEK TIMBERLANDS L P [Member]

Detail of Certain Balance Sheet Accounts

DETAIL OF CERTAIN BALANCE SHEET ACCOUNTS

Certain balance sheet accounts consisted of the following (in millions):

	December 31, 2011		December 31, 2010
Other Current Assets
Prepaid Expenses	$	7	$	6
Taxes Receivable	3		2
Notes Receivable	2		5
Cash Held in Escrow	—		9
Other	3		2
	$	15	$	24
Other Non-Current Assets
Real Estate Development Properties	$	13	$	14
Unamortized Debt Issue Costs	8		11
Deposits	5		5
Notes Receivable	8		10
Other	2		4
	$	36	$	44
Other Current Liabilities
Accrued Pension Liability	$	4	$	3
Workers’ Compensation	2		2
Other	2		2
	$	8	$	7
Other Non-Current Liabilities
Timber Obligations	$	6	$	6
Deferred Compensation	6		6
Long-Term Incentive Compensation	3		2
Accrued Pension Liability	60		26
Deferred Revenue	20		22
Workers’ Compensation	10		10
Other	4		5
	$	109	$	77

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Stockholders' Equity (PLUM CREEK TIMBER CO INC [Member])

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Stockholders' Equity

STOCKHOLDERS' EQUITY

At December 31, 2011, Plum Creek had the following authorized capital of which 161.3 million shares of common stock were issued and outstanding:

• 300,634,566 shares of common stock, par value $.01 per share;

• 150,000,001 shares of excess stock, par value $.01 per share; and

• 75,000,000 shares of preferred stock, par value $.01 per share.

The Board of Directors, from time to time, has authorized a share repurchase program. The table below summarizes the share repurchases pursuant to this program for the years ended December 31:

	2011		2010		2009
Shares of Common Stock (in millions)	0.7		1.4		3.3
Total Cost of Shares (in millions)	$	25	$	50	$	87
Average Cost per Share	$	34.84	$	36.37	$	26.57

At December 31, 2011, $175 million is available for share repurchases under the current Board of Directors authorization.

Comprehensive Income

Comprehensive income includes net income, actuarial gains and losses associated with our defined benefit pension plans and unrealized gains and losses on available-for-sale securities. Comprehensive income was as follows for the years ended December 31 (in millions):

	Pretax Amount			Tax Expense (Benefit)			After-Tax Amount
December 31, 2009
Net Income							$	236
Unrealized Holding Gains	$	5		$	—		5
Defined Benefit Plans:
Actuarial Gain	3			1			2
Reclassification to Net Income	7			2			5
Total Comprehensive Income							$	248
December 31, 2010
Net Income							$	213
Unrealized Holding Gains	$	2		$	—		2
Defined Benefit Plans:
Actuarial Gain	6			2			4
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	221
December 31, 2011
Net Income							$	193
Unrealized Holding Losses	$	(1	)	$	—		(1		)
Defined Benefit Plans:
Actuarial Loss	(31		)	(6		)	(25		)
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	169

The components of accumulated other comprehensive income, net of tax, were as follows at December 31 (in millions):

	2011			2010
Net Unrealized Holding Gains	$	6		$	7
Defined Benefit Plans:
Net Loss	(41		)	(18		)
	$	(35	)	$	(11	)

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Partners' Capital (Comprehensive Income) (Details) (PLUM CREEK TIMBERLANDS L P [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net Income Loss Before Allocation To Preferred Interest	$ 251	$ 271	$ 294
Unrealized Holding Gains (Losses)	(1)	2	5
Actuarial Gain/(Loss)	(31)	6	3
Reclassification to Net Income for Actuarial Gains or Losses	2	2	7
Total Comprehensive Income	227	279	306
Pretax Amount [Member]
Unrealized Holding Gains (Losses)	(1)	2	5
Actuarial Gain/(Loss)	(31)	6	3
Reclassification to Net Income for Actuarial Gains or Losses	2	2	7
Tax Expense (Benefit) [Member]
Unrealized Holding Gains (Losses)	0	0	0
Actuarial Gain/(Loss)	(6)	2	1
Less: Reclassification to Net Income	0	0	2
After Tax Amount [Member]
Net Income Loss Before Allocation To Preferred Interest	251	271	294
Unrealized Holding Gains (Losses)	(1)	2	5
Actuarial Gain/(Loss)	(25)	4	2
Less: Reclassification to Net Income	2	2	5
Total Comprehensive Income	$ 227	$ 279	$ 306

XML

REIT Disclosures (PLUM CREEK TIMBER CO INC [Member])

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

REIT Disclosures

REIT DISCLOSURES

Plum Creek has elected to be taxed as a REIT under sections 856-860 of the United States Internal Revenue Code. For the years 2011, 2010 and 2009, Plum Creek elected to designate all distributions as long-term capital gain dividends. As of and for the years ended December 31, 2011, 2010, and 2009, Plum Creek has distributed all of its taxable income. The company has no undistributed capital gain or ordinary income as of December 31, 2011.

The table below summarizes the historical tax character of distributions to Plum Creek shareholders for the years ended December 31 (amounts per share):

	2011		2010		2009
Capital Gain Dividend	$	1.68	$	1.68	$	1.68
Non-Taxable Return of Capital	—		—		—
Total Distributions	$	1.68	$	1.68	$	1.68

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Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
REIT's book basis exceeding tax basis	$ 1,800,000,000
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	0	1,000,000	3,000,000
Reversal of tax expense because of tax law change related to built-in gains that were accrued in 2008	0	0	5,000,000
Tax Benefit from Carryback of Prior Period Losses			12,000,000
Federal statutory income tax rate	35.00%
Deferred Tax Assets, Operating Loss Carryforwards	15,000,000	14,000,000
Operating Loss Carryforwards, Expiration Dates (Year)	2028
Change to Valuation Allowance	3,000,000	0	0
Deferred tax gross assets	62,000,000	54,000,000
Valuation Allowance	3,000,000	0
PLUM CREEK TIMBERLANDS L P [Member]
REIT's book basis exceeding tax basis	1,800,000,000
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	0	1,000,000	3,000,000
Reversal of tax expense because of tax law change related to built-in gains that were accrued in 2008	0	0	5,000,000
Tax Benefit from Carryback of Prior Period Losses			12,000,000
Federal statutory income tax rate	35.00%
Deferred Tax Assets, Operating Loss Carryforwards	15,000,000	14,000,000
Operating Loss Carryforwards, Expiration Dates (Year)	2028
Change to Valuation Allowance	3,000,000	0	0
Deferred tax gross assets	62,000,000	54,000,000
Valuation Allowance	$ 3,000,000	$ 0

XML

Related Party Transactions (Notes Payable) (Details) (PLUM CREEK TIMBER CO INC [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Interest Expense, Related Party	$ 58	$ 58	$ 58
Interest Payments to Related Party	$ 58	$ 58	$ 58

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Property, Plant and Equipment

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Property, Plant and Equipment

PROPERTY, PLANT AND EQUIPMENT

Property, Plant and Equipment consisted of the following (in millions):

	December 31, 2011			December 31, 2010
Land, Buildings and Improvements	$	86		$	84
Machinery and Equipment	315			309
	401			393
Accumulated Depreciation	(263		)	(247		)
Property, Plant and Equipment, net	$	138		$	146

PLUM CREEK TIMBERLANDS L P [Member]

Property, Plant and Equipment

PROPERTY, PLANT AND EQUIPMENT

Property, Plant and Equipment consisted of the following (in millions):

	December 31, 2011			December 31, 2010
Land, Buildings and Improvements	$	86		$	84
Machinery and Equipment	315			309
	401			393
Accumulated Depreciation	(263		)	(247		)
Property, Plant and Equipment, net	$	138		$	146

XML

Income Taxes

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Income Taxes

INCOME TAXES

Plum Creek has elected to be taxed as a REIT under sections 856-860 of the United States Internal Revenue Code. A REIT generally does not pay corporate-level income tax if it distributes 100% of its taxable income to shareholders and satisfies other organizational and operational requirements as set forth in the Internal Revenue Code. If a company fails to qualify as a REIT in any taxable year, it will be subject to federal income taxes at regular corporate rates (including any applicable alternative minimum tax) and may not be able to qualify as a REIT for four subsequent taxable years.

Plum Creek operates as a REIT through various wholly-owned subsidiaries and a joint venture partnership. The activities of the operating partnerships and joint venture partnership consist primarily of sales of standing timber under pay-as-cut sales contracts. The book basis of the REIT’s assets and liabilities exceeds its tax basis by approximately $1.8 billion at December 31, 2011.

Plum Creek conducts certain activities through various wholly-owned taxable REIT subsidiaries, which are subject to corporate-level income tax. These activities include the company’s manufacturing operations, the harvesting and sale of logs, and the development and/or sale of some of the company’s higher and better use timberlands. Plum Creek’s wholly-owned taxable REIT subsidiaries file a consolidated federal income tax return.

Prior to 2011, Plum Creek was generally subject to corporate-level tax (built-in gains tax) when the company made a taxable disposition of certain properties acquired in a 2001 merger. The built-in gains tax applied to gains recognized from such asset sales to the extent that the fair value of the property exceeded its tax basis at the merger date. Built-in gains tax was generally not payable on dispositions of property to the extent the proceeds from such dispositions were reinvested in qualifying like-kind replacement property. Prior to 2011, Plum Creek maintained a deferred income tax liability related to the book-tax basis difference of timber and timberlands that were expected to be sold, and subject to, the built-in gains tax.

In connection with the enactment of the American Recovery and Reinvestment Act of 2009, deferred taxes associated with timber and timberlands related to the built-in gains tax were reduced by $3 million, resulting in the recognition of a $3 million deferred income tax benefit in 2009. Furthermore, as a result of the enactment of the American Recovery and Reinvestment Act of 2009, the company reversed $5 million of current tax expense related to built-in gains tax that had been accrued in 2008. Following the enactment of the Small Business Jobs Act of 2010, the company concluded that it no longer needed a deferred tax liability in connection with expected sales of timberlands that are subject to the built-in gains tax. As a result, the company reduced its deferred tax liability by $1 million in 2010.

The company recognizes interest and penalties, if incurred, related to income taxes in the Provision for Income Taxes in the Consolidated Statements of Income. During the years ended December 31, 2011, 2010 and 2009, amounts for interest and penalties included in the tax provision were insignificant. At December 31, 2011, and December 31, 2010, the company had no accrued interest or penalties related to income taxes.

The provision (benefit) for income taxes consists of the following for the years ended December 31 (in millions):

	2011			2010			2009
Current Income Taxes (A):
Federal	$	—		$	—		$	(14	)
State	(2		)	—			(2		)
Deferred Income Taxes:
Federal	—			3			—
State	—			—			—
Utilization of (Benefit from) Operating Loss Carryforward	(2		)	(1		)	(12		)
Change to Valuation Allowance	3			—			—
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

^(A)  Included in the current tax provision for 2009 is a $12 million tax benefit associated with the carryback of net operating losses to 2004 and 2005 as a result of the Worker, Homeownership and Business Assistance Act of 2009.

The federal statutory income tax rate was 35%. The income generated by the activities of the REIT is generally not subject to federal and state income tax. The permanent book-tax differences consist primarily of differences in cost basis for certain contributed properties that were sold, in which the tax basis exceeded the book basis.

The provision (benefit) for income taxes is reconciled as follows to the federal statutory rate for the years ended December 31 (in millions):

	2011			2010			2009
Provision for Income Taxes on Income from Continuing Operations Computed at the Federal Statutory Tax Rate of 35%	$	67		$	71		$	72
REIT Income not Subject to Federal Tax	(68		)	(64		)	(86		)
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Change to Valuation Allowance	3			—			—
State Income Tax Expense (Benefit), net of Federal Benefit	(1		)	—			(2		)
Reversal of Accrued Built-In Gains	—			—			(5		)
Tax Audit Settlements	1			—			—
Permanent Book-Tax Differences	(3		)	(5		)	(7		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

Total income tax provision (benefit) was allocated as follows for the years ended December 31 (in millions):

	2011			2010		2009
Income from Continuing Operations	$	(1	)	$	1	$	(31	)
Other Comprehensive Income	(6		)	2		3
Gain on Sale of Properties	—			—		—
Additional Paid-In Capital (Share-Based Compensation)	—			—		—
Total Income Tax Provision (Benefit)	$	(7	)	$	3	$	(28	)

Deferred income taxes are provided for the temporary differences between the financial reporting basis and tax basis for the assets and liabilities of our various wholly-owned taxable REIT subsidiaries. The components of deferred income tax assets and liabilities are as follows at December 31 (in millions):

	2011			2010
Deferred Income Tax Assets:
Federal and State Net Operating Loss Carryforwards	$	15		$	14
Accrued Compensation	7			7
Accrued Pension Benefits	17			6
Timber and Timberlands	9			9
Accrued Workers' Compensation Benefits	4			4
Inventory Reserves and Write-downs	—			2
Other Accruals and Reserves	3			6
Valuation Allowance	(3		)	—
	52			48
Deferred Income Tax Liabilities:
Machinery and Equipment	(29		)	(31		)
	(29		)	(31		)
Deferred Income Tax Asset, net	$	23		$	17

The company has federal and state net operating loss carryforwards of $15 million at December 31, 2011 which will begin to expire in 2028. In 2011, the company recorded a valuation allowance of $3 million to reflect the estimated amount of deferred tax assets that may not be realized. The valuation allowance is related to certain state net operating loss carryforwards and other associated deferred tax assets that we do not believe it is more likely than not will be realized in future periods.

The determination of the realization of deferred tax assets is based upon management's judgment of various future events and uncertainties, including the timing, nature and amount of future taxable income earned by certain wholly-owned subsidiaries. A valuation allowance is recognized if management believes it is more likely than not that some portion, or all, of the deferred tax asset will not be realized. The company has recorded gross deferred tax assets of $62 million (net of a $3 million valuation allowance) and $54 million as of December 31, 2011 and December 31, 2010, respectively. Management believes that due to the reversal of various taxable temporary differences and/or the planned execution of prudent and feasible tax planning strategies, sufficient taxable income can be generated to utilize the company's remaining deferred tax assets for which a valuation allowance was determined to be unnecessary.

The net deferred income tax asset is classified on our Consolidated Balance Sheets as follows at December 31 (in millions):

	2011		2010
Current Deferred Income Tax Asset	$	6	$	7
Non Current Deferred Income Tax Asset	17		10
Deferred Income Tax Asset, net	$	23	$	17

As of December 31, 2011 and December 31, 2010, we did not have any liabilities for unrecognized tax benefits. We believe the statute of limitations has expired for all tax years prior to 2006. We continue to monitor the progress of ongoing income tax controversies. We do not currently believe there is a reasonable possibility of recording a liability for unrecognized tax benefits within the next twelve months.

PLUM CREEK TIMBERLANDS L P [Member]

Income Taxes

INCOME TAXES

Plum Creek Timberlands, L.P. is a wholly-owned limited partnership and therefore, not subject to income tax. Plum Creek Timberlands, L.P.’s taxable income is allocated 100% (directly and indirectly) to its parent, Plum Creek Timber Company, Inc., which has elected to be taxed as a REIT under sections 856-860 of the United States Internal Revenue Code. A REIT generally does not pay corporate-level income tax if it distributes 100% of its taxable income to shareholders and satisfies other organizational and operational requirements as set forth in the Internal Revenue Code. If a company fails to qualify as a REIT in any taxable year, it will be subject to federal income taxes at regular corporate rates (including any applicable alternative minimum tax) and may not be able to qualify as a REIT for four subsequent taxable years. The book basis of Plum Creek’s assets and liabilities exceeds its tax basis by approximately $1.8 billion at December 31, 2011.

The Operating Partnership conducts certain non-REIT activities through various wholly-owned taxable REIT subsidiaries, which are subject to corporate-level income tax. These activities include our manufacturing operations, the harvesting and sale of logs, and the development and/or sale of some higher value timberlands. The Operating Partnership’s tax provision includes the tax expense and/or benefit associated with Plum Creek’s wholly-owned taxable REIT subsidiaries, as well as any tax expense and/or benefit incurred by the REIT. The effective tax rate for the Operating Partnership is lower than the federal corporate statutory rate primarily due to Plum Creek’s status as a REIT.

Prior to 2011, Plum Creek was generally subject to corporate-level tax (built-in gains tax) when the Operating Partnership made a taxable disposition of certain properties acquired in a 2001 merger. The built-in gains tax applied to gains recognized from such asset sales to the extent that the fair value of the property exceeded its tax basis at the merger date. Built-in gains tax was generally not payable on dispositions of property to the extent the proceeds from such dispositions were reinvested in qualifying like-kind replacement property. Prior to 2011, the Operating Partnership maintained a deferred income tax liability related to the book-tax basis difference of timber and timberlands that were expected to be sold, and subject to, the built-in gains tax.

In connection with the enactment of the American Recovery and Reinvestment Act of 2009, deferred taxes associated with timber and timberlands related to the built-in gains tax were reduced by $3 million, resulting in the recognition of a $3 million deferred income tax benefit in 2009. Furthermore, as a result of the enactment of the American Recovery and Reinvestment Act of 2009, the Operating Partnership reversed $5 million of current tax expense related to built-in gains tax that had been accrued in 2008. Following the enactment of the Small Business Jobs Act of 2010, the Operating Partnership concluded that it no longer needed a deferred tax liability in connection with expected sales of timberlands that are subject to the built-in gains tax. As a result, the Operating Partnership reduced its deferred tax liability by $1 million in 2010.

The Operating Partnership recognizes interest and penalties, if incurred, related to income taxes in the Provision for Income Taxes in the Consolidated Statements of Income. During the years ended December 31, 2011, 2010 and 2009, amounts for interest and penalties included in the tax provision were insignificant. At December 31, 2011, and December 31, 2010, the Operating Partnership had no accrued interest or penalties related to income taxes.

The provision (benefit) for income taxes consists of the following for the years ended December 31 (in millions):

	2011			2010			2009
Current Income Taxes(A):
Federal	$	—		$	—		$	(14	)
State	(2		)	—			(2		)
Deferred Income Taxes:
Federal	—			3			—
State	—			—			—
Utilization of (Benefit from) Operating Loss Carryforward	(2		)	(1		)	(12		)
Change to Valuation Allowance	3			—			—
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

^(A)  Included in the current tax provision for 2009 is a $12 million tax benefit associated with the carryback of net operating losses to 2004 and 2005 as a result of the Worker, Homeownership and Business Assistance Act of 2009.

The federal statutory income tax rate was 35%. The income generated by the activities of the REIT is generally not subject to federal and state income tax. The permanent book-tax differences consist primarily of differences in cost basis for certain contributed properties that were sold, in which the tax basis exceeded the book basis.

The provision (benefit) for income taxes is reconciled as follows to the federal statutory rate for the years ended December 31 (in millions):

	2011			2010			2009
Provision for Income Taxes on Income from Continuing Operations Computed at the Federal Statutory Tax Rate of 35%	$	67		$	71		$	72
REIT Income not Subject to Federal Tax	(68		)	(64		)	(86		)
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Change to Valuation Allowance	3			—			—
State Income Tax Expense (Benefit), net of Federal Benefit	(1		)	—			(2		)
Reversal of Accrued Built-In Gains	—			—			(5		)
Tax Audit Settlements	1			—			—
Permanent Book-Tax Differences	(3		)	(5		)	(7		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

Total income tax provision (benefit) was allocated as follows for the years ended December 31 (in millions):

	2011				2010			2009
Income from Continuing Operations	$	(1	)	—	$	1	—	$	(31	)
Other Comprehensive Income	(6		)	—	2		—	3
Gain on Sale of Properties	—			—	—		—	—
Additional Paid-In Capital (Share-Based Compensation)	—			—	—		—	—
Total Income Tax Provision (Benefit)	$	(7	)	—	$	3	—	$	(28	)

Deferred income taxes are provided for the temporary differences between the financial reporting basis and tax basis for the assets and liabilities of our various wholly-owned taxable REIT subsidiaries. The components of deferred income tax assets and liabilities are as follows at December 31 (in millions): 

	2011			2010
Deferred Income Tax Assets:
Federal and State Net Operating Loss Carryforwards	$	15		$	14
Accrued Compensation	7			7
Accrued Pension Benefits	17			6
Timber and Timberlands	9			9
Accrued Workers' Compensation Benefits	4			4
Inventory Reserves and Write-downs	—			2
Other Accruals and Reserves	3			6
Valuation Allowance	(3		)	—
	52			48
Deferred Income Tax Liabilities:
Machinery and Equipment	(29		)	(31		)
	(29		)	(31		)
Deferred Income Tax Asset, net	$	23		$	17

The Operating Partnership has federal and state net operating loss carryforwards of $15 million at December 31, 2011 which will begin to expire in 2028. In 2011, the Operating Partnership recorded a valuation allowance of $3 million to reflect the estimated amount of deferred tax assets that may not be realized. The valuation allowance is related to certain state net operating loss carryforwards and other associated deferred tax assets that we do not believe it is more likely than not they will be realized in future periods.

The determination of the realization of deferred tax assets is based upon management's judgment of various future events and uncertainties, including the timing, nature and amount of future taxable income earned by certain wholly-owned subsidiaries. A valuation allowance is recognized if management believes it is more likely than not that some portion, or all, of the deferred tax asset will not be realized. The company has recorded gross deferred tax assets of $62 million (net of a $3 million valuation allowance) and $54 million as of December 31, 2011 and December 31, 2010, respectively. Management believes that due to the reversal of various taxable temporary differences and/or the planned execution of prudent and feasible tax planning strategies, sufficient taxable income can be generated to utilize the company's remaining deferred tax assets for which a valuation allowance was determined to be unnecessary.

The net deferred income tax asset is classified on our Consolidated Balance Sheets as follows at December 31 (in millions): 

	2011		2010
Current Deferred Income Tax Asset	$	6	$	7
Non Current Deferred Income Tax Asset	17		10
Deferred Income Tax Asset, net	$	23	$	17

As of December 31, 2011 and December 31, 2010, Plum Creek did not have any liabilities for unrecognized tax benefits. We believe the statute of limitations has expired for all tax years prior to 2006. Plum Creek continues to monitor the progress of ongoing income tax controversies. We do not currently believe there is a reasonable possibility of recording a liability for unrecognized tax benefits within the next twelve months.

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Borrowings

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Borrowings

BORROWINGS

All of our borrowings, except the Note Payable to Timberland Venture, are made by Plum Creek Timberlands, L.P., the company’s wholly-owned operating partnership (“the Partnership”). Furthermore, all of the outstanding indebtedness of the Partnership is unsecured. Outstanding borrowings consist of the following (in millions): 

	December 31, 2011		December 31, 2010
Line of Credit maturing 2015, 1.71% at 12/31/11, based on LIBOR plus 1.50%	$	348	$	166
Term Credit Agreement due 2012, 0.65% at 12/31/11, based on LIBOR plus 0.375%.	350		350
Senior Notes due 2011, 7.83%	—		49
Senior Notes due 2013, 6.18%	174		174
Senior Notes due 2013, 7.76% less unamortized discount of $0.3 at 12/31/11, effective rate of 8.05%	72		111
Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10%	454		454
Senior Notes due 2016, mature serially 2012 to 2016, 8.05%	17		24
Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71%	575		575
Note Payable to Timberland Venture due 2018, 7.375%	783		783
Total Long-Term Debt	2,773		2,686
Less: Current Portion of Long-Term Debt	352		94
Less: Line of Credit	348		166
Long-Term Portion	$	2,073	$	2,426

Line of Credit. The company has a $600 million revolving line of credit agreement that matures January 30, 2015. The weighted-average interest rate for the borrowings on the line of credit was 1.71% and 1.95% as of December 31, 2011 and December 31, 2010, respectively. The interest rate on the line of credit is based on LIBOR plus 1.50%. This rate can range from LIBOR plus 1.275% to LIBOR plus 2% depending on our debt ratings. In addition to interest, the line has an annual facility fee of 0.25% that can vary depending on debt rating. Subject to customary covenants, the line of credit allows for borrowings from time to time up to $600 million, including up to $100 million of standby letters of credit. Borrowings on the line of credit fluctuate daily based on cash needs. As of December 31, 2011, we had $348 million of borrowings and $2 million of standby letters of credit outstanding; $250 million remained available for borrowing under our line of credit. As of January 3, 2012, $251 million of the borrowings under our line of credit was repaid. The line of credit has been classified as a current liability in our Consolidated Balance Sheet as of December 31, 2011, because the company used its cash as of December 31, 2011 to repay a portion of the line.

Term Credit Agreement. The company has a $350 million term credit agreement that matures July 10, 2012. As of December 31, 2011, the interest rate for the term credit agreement was 0.65%. The interest rate is based on LIBOR plus 0.375%. This rate can range from LIBOR plus 0.3% to LIBOR plus 1.15% depending on our debt ratings. The term credit agreement is subject to covenants that are substantially the same as those of the revolving line of credit. The agreement allows for prepayment of the borrowings at any time prior to the maturity date without premium or penalty.

Senior Notes. The company has outstanding Senior Notes with various maturities and fixed interest rates. As of December 31, 2011, the company has $263 million aggregate principal amount of Senior Notes outstanding that are privately placed borrowings with various lenders (“Private Debt”). The Private Debt matures serially through 2016.

As of December 31, 2011, the company has publicly issued approximately $1.0 billion aggregate principal amount of Senior Notes (“Public Debt”). The company has $575 million aggregate principal amount of 4.70% Public Debt which matures in 2021. The remaining 5.875% Public Debt with an aggregate principal amount of $458 million matures in 2015. The Public Debt is issued by the Partnership and is fully and unconditionally guaranteed by Plum Creek Timber Company, Inc.

The Senior Notes are redeemable prior to maturity; however, they are subject to a premium on redemption, which is based upon interest rates of U.S. Treasury securities having similar average maturities. The premium that would have been due upon early retirement approximated $237 million at December 31, 2011 and $164 million at December 31, 2010.

The Public Debt is structurally subordinated to all debt and liabilities of the Partnership’s subsidiaries to the extent of the value of the assets at the subsidiaries. At December 31, 2011, the total amount of debt and liabilities of the Partnership’s subsidiaries was $263 million, all of which was unsecured. In the event of insolvency, bankruptcy, liquidation, reorganization, dissolution, winding up of the Partnership’s business or other similar process, the assets of the Partnership’s subsidiaries will be available to pay the amounts due on the Public Debt only after the indebtedness of the Partnership’s subsidiaries has been repaid in full.

Senior Notes outstanding, including unamortized discount, consisted of the following (in millions): 

	December 31, 2011		December 31, 2010
Senior Notes
Public Debt	$	1,029	$	1,029
Private Debt	263		358
Total Senior Notes	$	1,292	$	1,387

Plum Creek Timber Company, Inc. and the Partnership have filed a shelf registration statement with the Securities and Exchange Commission which expires in December 2014. Under the shelf registration statement, Plum Creek Timber Company, Inc., from time to time, may offer and sell any combination of preferred stock, common stock, depositary shares, warrants and guarantees, and the Partnership may from time to time, offer and sell debt securities. The company intends to maintain a shelf registration statement with respect to such securities.

Note Payable to Timberland Venture. The company has a $783 million note payable to a timberland venture (a related party). The annual interest rate on the note payable is fixed at 7.375%. During the ten-year term of the note, interest is paid quarterly with the principal due upon maturity. The note matures on October 1, 2018 but may be extended until October 1, 2020 at the election of Plum Creek. The note is not redeemable prior to maturity. The note is structurally subordinated to all other indebtedness of the company at December 31, 2011. See Notes 9 and 16 of the Notes to Consolidated Financial Statements.

Debt Principal Payments. The table below summarizes the debt principal payments made for the years ended December 31 (in millions): 

	2011		2010
Public Debt	$	—	$	—
Private Debt	95		269
Term Credit Agreement	—		250
Total	$	95	$	519

During 2010, the company prepaid approximately $213 million of principal of Private Debt. This prepayment resulted in a $13 million loss. The $13 million loss for the year ended December 31, 2010, is classified as Loss on Extinguishment of Debt in the Consolidated Statements of Income.

Debt Maturities. The aggregate maturities on all debt agreements are as follows as of December 31, 2011 (in millions): 

Maturity	Debt Agreements		Note Payable to Timberland Venture		Total
2012	$	353	$	—	$	353
2013	250		—		250
2014	3		—		3
2015	810		—		810
2016	3		—		3
Thereafter	575		783		1,358
Total	$	1,994	$	783	$	2,777

Debt Covenants. Certain of the company’s debt agreements contain various restrictive covenants, including limitations on harvest levels, sales of assets, the incurrence of indebtedness and making restricted payments (such as payments of cash dividends or stock repurchases). The borrowing agreements for the Private Debt limit our ability to make restricted payments (see Note 9 of the Notes to Consolidated Financial Statements) based on a computation of “available cash”, which is generally our net income (excluding gains on the sale of capital assets) after adjusting for non-cash charges (such as depreciation and depletion), changes in various reserves, less capital expenditures and principal payments on indebtedness that are not financed. Additionally, the amount of available cash may be increased by the amount of proceeds from the sale of higher and better use properties and, under certain circumstances, by 50% of the amount of net proceeds from the sale of other assets. Furthermore, our line of credit and term credit agreement require that we maintain certain interest coverage and maximum leverage ratios. The company was in compliance with all of our borrowing agreements covenants as of December 31, 2011.

PLUM CREEK TIMBERLANDS L P [Member]

Borrowings

BORROWINGS

Outstanding borrowings of the Operating Partnership, all of which are unsecured, consist of the following (in millions): 

	December 31, 2011		December 31, 2010
Line of Credit maturing 2015, 1.71% at 12/31/11, based on LIBOR plus 1.50%	$	348	$	166
Term Credit Agreement due 2012, 0.65% at 12/31/11, based on LIBOR plus 0.375%.	350		350
Senior Notes due 2011, 7.83%	—		49
Senior Notes due 2013, 6.18%	174		174
Senior Notes due 2013, 7.76% less unamortized discount of $0.3 at 12/31/11, effective rate of 8.05%	72		111
Senior Notes due 2015, 5.875% less unamortized discount of $3.4 at 12/31/11, effective rate of 6.10%	454		454
Senior Notes due 2016, mature serially 2012 to 2016, 8.05%	17		24
Senior Notes due 2021, 4.70% less unamortized discount of $0.3 at 12/31/11, effective rate of 4.71%	575		575
Total Long-Term Debt	1,990		1,903
Less: Current Portion of Long-Term Debt	352		94
Less: Line of Credit	348		166
Long-Term Portion	$	1,290	$	1,643

Line of Credit. The company has a $600 million revolving line of credit agreement that matures January 30, 2015. The weighted-average interest rate for the borrowings on the line of credit was 1.71% and 1.95% as of December 31, 2011 and December 31, 2010, respectively. The interest rate on the line of credit is based on LIBOR plus 1.50%. This rate can range from LIBOR plus 1.275% to LIBOR plus 2% depending on our debt ratings. In addition to interest, the line has an annual facility fee of 0.25% that can vary depending on debt rating. Subject to customary covenants, the line of credit allows for borrowings from time to time up to $600 million, including up to $100 million of standby letters of credit. Borrowings on the line of credit fluctuate daily based on cash needs. As of December 31, 2011, we had $348 million of borrowings and $2 million of standby letters of credit outstanding; $250 million remained available for borrowing under our line of credit. As of January 3, 2012, $251 million of the borrowings under our line of credit was repaid. The line of credit has been classified as a current liability in our Consolidated Balance Sheet as of December 31, 2011, because the Operating Partnership used its cash as of December 31, 2011 to repay a portion of the line.

Term Credit Agreement. The Operating Partnership has a $350 million term credit agreement that matures July 10, 2012. As of December 31, 2011, the interest rate for the term credit agreement was 0.65%. The interest rate is based on LIBOR plus 0.375%. This rate can range from LIBOR plus 0.3% to LIBOR plus 1.15% depending on our debt ratings. The term credit agreement is subject to covenants that are substantially the same as those of the revolving line of credit. The agreement allows for prepayment of the borrowings at any time prior to the maturity date without premium or penalty.

Senior Notes. The Operating Partnership has outstanding Senior Notes with various maturities and fixed interest rates. As of December 31, 2011, the Operating Partnership has $263 million aggregate principal amount of Senior Notes outstanding that are privately placed borrowings with various lenders (“Private Debt”). The Private Debt matures serially through 2016.

As of December 31, 2011, the Operating Partnership has publicly issued approximately $1.0 billion aggregate principal amount of Senior Notes (“Public Debt”). The company has $575 million aggregate principal amount of 4.70% Public Debt which matures in 2021. The remaining 5.875% Public Debt with an aggregate principal amount of $458 million million matures in 2015. The Public Debt is fully and unconditionally guaranteed by Plum Creek Timber Company, Inc.

The Senior Notes are redeemable prior to maturity; however, they are subject to a premium on redemption, which is based upon interest rates of U.S. Treasury securities having similar average maturities. The premium that would have been due upon early retirement approximated $237 million at December 31, 2011 and $164 million at December 31, 2010.

The Public Debt is structurally subordinated to all debt and liabilities of the Operating Partnership’s subsidiaries to the extent of the value of the assets at the subsidiaries. At December 31, 2011, the total amount of debt and liabilities of the Operating Partnership’s subsidiaries was $263 million, all of which was unsecured. In the event of insolvency, bankruptcy, liquidation, reorganization, dissolution, winding up of the Operating Partnership’s business or other similar process, the assets of the Operating Partnership’s subsidiaries will be available to pay the amounts due on the Public Debt only after the indebtedness of the Operating Partnership’s subsidiaries has been repaid in full.

Senior Notes outstanding, including unamortized discount, consisted of the following (in millions): 

	December 31, 2011		December 31, 2010
Senior Notes
Public Debt	$	1,029	$	1,029
Private Debt	263		358
Total Senior Notes	$	1,292	$	1,387

Plum Creek Timber Company, Inc. and the Operating Partnership have filed a shelf registration statement with the Securities and Exchange Commission which expires in December 2014. Under the shelf registration statement, Plum Creek Timber Company, Inc., from time to time, may offer and sell any combination of preferred stock, common stock, depositary shares, warrants and guarantees, and the Operating Partnership may from time to time, offer and sell debt securities. Plum Creek and the Operating Partnership intend to maintain a shelf registration statement with respect to such securities.

Debt Principal Payments. The table below summarizes the debt principal payments made for the years ended December 31 (in millions): 

	2011		2010
Public Debt	$	—	$	—
Private Debt	95		269
Term Credit Agreement	—		250
Total	$	95	$	519

During 2010, the Operating Partnership prepaid approximately $213 million of principal of Private Debt. This prepayment resulted in a $13 million loss. The $13 million loss for the year ended December 31, 2010, is classified as Loss on Extinguishment of Debt in the Consolidated Statements of Income.

Debt Maturities. The aggregate maturities on all debt agreements are as follows as of December 31, 2011 (in millions):

Maturity	Debt Agreements
2012	$	353
2013	250
2014	3
2015	810
2016	3
Thereafter	575
Total	$	1,994

Debt Covenants. Certain of the Operating Partnership’s debt agreements contain various restrictive covenants, including limitations on harvest levels, sales of assets, the incurrence of indebtedness and making restricted payments on behalf of Plum Creek (such as payments of cash dividends or stock repurchases). The borrowing agreements for the Private Debt limit our ability to make restricted payments based on a computation of “available cash,” which is generally our net income (excluding gains on the sale of capital assets) after adjusting for non-cash charges (such as depreciation and depletion), changes in various reserves, less capital expenditures and principal payments on indebtedness that are not financed. Additionally, the amount of available cash may be increased by the amount of proceeds from the sale of higher and better use properties and, under certain circumstances, by 50% of the amount of net proceeds from the sale of other assets. Furthermore, our line of credit and term credit agreement require that we maintain certain interest coverage and maximum leverage ratios. The Operating Partnership was in compliance with all of our borrowing agreements covenants as of December 31, 2011.

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Income Taxes (Schedule of Components of Deferred Income Tax Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Federal and State Net Operating Loss Carryforwards	$ 15	$ 14
Accrued Compensation	7	7
Accrued Pension Benefits	17	6
Timber and Timberlands	9	9
Accrued Worker's Compensation Benefits	4	4
Inventory Reserves and Write-downs	0	2
Other Accruals and Reserves	3	6
Valuation Allowance	(3)	0
Deferred income tax assets, Total	52	48
Machinery and Equipment	(29)	(31)
Deferred income tax liabilities, Total	(29)	(31)
Deferred Income Tax Asset, net	23	17
PLUM CREEK TIMBERLANDS L P [Member]
Federal and State Net Operating Loss Carryforwards	15	14
Accrued Compensation	7	7
Accrued Pension Benefits	17	6
Timber and Timberlands	9	9
Accrued Worker's Compensation Benefits	4	4
Inventory Reserves and Write-downs	0	2
Other Accruals and Reserves	3	6
Valuation Allowance	(3)	0
Deferred income tax assets, Total	52	48
Machinery and Equipment	(29)	(31)
Deferred income tax liabilities, Total	(29)	(31)
Deferred Income Tax Asset, net	$ 23	$ 17

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Supplemental Disclosures (Details) (Public Debt [Member], PLUM CREEK TIMBERLANDS L P [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2011
Public Debt [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Senior Notes Short and Long Term Aggregate	$ 1,033

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Partners' Capital (Components of Accumulated Other Comprehensive Income Net of Tax) (Details) (PLUM CREEK TIMBERLANDS L P [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBERLANDS L P [Member]
Net Unrealized Holding Gains	$ 6	$ 7
Defined Benefit Plans: Net Loss	(41)	(18)
Accumulated Other Comprehensive Income, Net of Tax	$ (35)	$ (11)

XML

REIT Disclosures (Details) (PLUM CREEK TIMBER CO INC [Member], USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Capital Gain Dividend	$ 1.68	$ 1.68	$ 1.68
NonTaxableReturnofCapital	$ 0.00	$ 0.00	$ 0.00
Total Distributions	$ 1.68	$ 1.68	$ 1.68

XML

Share-Based Compensation Plans (Summary of Earned and Paid Value Management Awards for Three Year Periods) (Details) (Value Management Awards [Member], USD $) In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2011
Performance Period 2009 to 2011 [Member] | PLUM CREEK TIMBER CO INC [Member]
Payout Value per Unit	$ 0
Total Payout (millions)	$ 0
Payment Date	Not Earned
Performance Period 2009 to 2011 [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Payout Value per Unit	$ 0
Total Payout (millions)	0
Payment Date	Not Earned
Performance Period 2008 to 2010 [Member] | PLUM CREEK TIMBER CO INC [Member]
Payout Value per Unit	$ 0
Total Payout (millions)	0
Payment Date	Not Earned
Performance Period 2008 to 2010 [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Payout Value per Unit	$ 0
Total Payout (millions)	0
Payment Date	Not Earned
Performance Period 2007 to 2009 [Member] | PLUM CREEK TIMBER CO INC [Member]
Payout Value per Unit	$ 200
Total Payout (millions)	11.1
Payment Date	1st Quarter 2010
Performance Period 2007 to 2009 [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Payout Value per Unit	$ 200
Total Payout (millions)	11.1
Payment Date	1st Quarter 2010
Performance Period 2006 to 2008 [Member] | PLUM CREEK TIMBER CO INC [Member]
Payout Value per Unit	$ 200
Total Payout (millions)	10.6
Payment Date	1st Quarter 2009
Performance Period 2006 to 2008 [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Payout Value per Unit	$ 200
Total Payout (millions)	$ 10.6
Payment Date	1st Quarter 2009

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Income Taxes (Schedule of Allocation of Income Tax Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Benefit for Income Taxes on Income from Continuing Operations	$ (1)	$ 1	$ (31)
Other Comprehensive Income	(6)	2	3
Gain on Sale of Properties	0	0	0
Additional Paid-In Capital (Share-Based Compensation	0	0	0
Total Income Tax Expense (Benefit)	(7)	3	(28)
PLUM CREEK TIMBERLANDS L P [Member]
Benefit for Income Taxes on Income from Continuing Operations	(1)	1	(31)
Other Comprehensive Income	(6)	2	3
Gain on Sale of Properties	0	0	0
Additional Paid-In Capital (Share-Based Compensation	0	0	0
Total Income Tax Expense (Benefit)	$ (7)	$ 3	$ (28)

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Employee Pension and Retirement Plans (Weighted Average Assumption Used to Determine Benefit Obligations) (Details)	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Annuity Distributions	4.95%	5.90%
Lump-Sum Distributions	3.02%	4.19%
Rate of Compensation Increase	3.45%	3.45%
PLUM CREEK TIMBERLANDS L P [Member]
Annuity Distributions	4.95%	5.90%
Lump-Sum Distributions	3.02%	4.19%
Rate of Compensation Increase	3.45%	3.45%

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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following tables set forth the reconciliation of basic and diluted earnings per share for the years ended December 31 (in millions, except per share amounts):

	2011		2010		2009
Income from Continuing Operations	$	193	$	202	$	236
Gain on Sale of Properties, net of tax	—		11		—
Net Income Available to Common Stockholders	$	193	$	213	$	236
Denominator for Basic Earnings per Share	161.7		162.1		163.3
Effect of Dilutive Securities – Stock Options	0.2		0.1		0.1
Effect of Dilutive Securities – Restricted Stock, Restricted Stock Units and Value Management Plan	0.1		0.1		—
Denominator for Diluted Earnings per Share – Adjusted for Dilutive Securities	162.0		162.3		163.4
Per Share Amounts – Basic:
Income from Continuing Operations	$	1.19	$	1.25	$	1.45
Gain on Sale of Properties, net of tax	$	—	$	0.07	$	—
Net Income	$	1.19	$	1.31	$	1.45
Per Share Amounts – Diluted:
Income from Continuing Operations	$	1.19	$	1.24	$	1.44
Gain on Sale of Properties, net of tax	$	—	$	0.07	$	—
Net Income	$	1.19	$	1.31	$	1.44

Antidilutive Options

Antidilutive options were excluded for certain periods from the computation of diluted earnings per share because the exercise prices of the options were greater than the average market price of the common shares. Antidilutive options were as follows for the years ended December 31 (shares in millions):

	2011	2010	2009
Number of Options	1.5	2.0	2.2
Range of Exercise Prices	$35.22 to $43.23	$33.75 to $43.23	$30.70 to $43.23
Expiration on or before	February 2021	February 2020	February 2019

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Segment Information (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Revenues From Manufactured Products By Product Line [Textblock]

Revenues from manufactured products by product line were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Lumber	$	77	$	75	$	85
Plywood	75		73		62
MDF	121		117		98
Total	$	273	$	265	$	245

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The tables below present information about reported segments for the years ended December 31 (in millions):

	Northern Resources			Southern Resources		Real Estate(A)		Manufactured Products(B)			Other(C)		Total(D)
2011
External Revenues	$	213		$	359	$	301	$	273		$	21	$	1,167
Intersegment Revenues	20			—		—		—			—		20
Export Revenues	26			—		—		25			—		51
Depreciation, Depletion and Amortization	26			51		2		13			—		92
Basis of Real Estate Sold	—			—		77		—			—		77
Other Operating Gain	—			—		—		—			2		2
Operating Income (Loss)	24			74		195		15			21		329
2010
External Revenues	$	192		$	377	$	336	$	265		$	20	$	1,190
Intersegment Revenues	18			—		—		—			—		18
Export Revenues	14			—		—		24			—		38
Depreciation, Depletion and Amortization	28			50		2		12			—		92
Basis of Real Estate Sold	—			—		132		—			—		132
Other Operating Gain	1			—		—		2			5		8
Operating Income (Loss)	13			107		180		24			23		347
2009
External Revenues	$	198		$	347	$	486	$	245		$	18	$	1,294
Intersegment Revenues	14			—		—		—			—		14
Export Revenues	11			—		—		21			—		32
Depreciation, Depletion and Amortization	30			51		1		23			—		105
Basis of Real Estate Sold	—			—		155		—			—		155
Operating Income (Loss)	(3		)	81		278		(23		)	17		350

^(A)  The company recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.

During 2009, the company completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.

During 2008, the company negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

^(B)  During 2010, the company sold certain lumber manufacturing assets for a gain of $2 million. The gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

^(C)  During 2011, the company received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the company agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the company received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The company allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term.

^(D) Consolidated depreciation, depletion and amortization includes unallocated corporate depreciation of $4 million for 2011, 2010 and 2009.

Reconciliation of Total Segment Operating Income to Consolidated Income Before Income Taxes

A reconciliation of total segment operating income to income before income taxes is presented below for the years ended December 31 (in millions):

	2011			2010			2009
Total Segment Operating Income	$	329		$	347		$	350
Corporate and Other Unallocated Expenses	(55		)	(51		)	(51		)
Other Unallocated Operating Income (Expense), net	1			1			—
Operating Income	275			297			299
Equity Earnings from Timberland Venture	56			57			55
Total Interest Expense, net	(139		)	(138		)	(147		)
Gain (Loss) on Extinguishment of Debt	—			(13		)	(2		)
Income before Income Taxes	$	192		$	203		$	205

PLUM CREEK TIMBERLANDS L P [Member]

Revenues From Manufactured Products By Product Line [Textblock]

Revenues from manufactured products by product line were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Lumber	$	77	$	75	$	85
Plywood	75		73		62
MDF	121		117		98
Total	$	273	$	265	$	245

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The tables below present information about reported segments for the years ended December 31 (in millions):

	Northern Resources			Southern Resources		Real Estate(A)		Manufactured Products(B)			Other(C)		Total(D)
2011
External Revenues	$	213		$	359	$	301	$	273		$	21	$	1,167
Intersegment Revenues	20			—		—		—			—		20
Export Revenues	26			—		—		25			—		51
Depreciation, Depletion and Amortization	26			51		2		13			—		92
Basis of Real Estate Sold	—			—		77		—			—		77
Other Operating Gain	—			—		—		—			2		2
Operating Income (Loss)	24			74		195		15			21		329
2010
External Revenues	$	192		$	377	$	336	$	265		$	20	$	1,190
Intersegment Revenues	18			—		—		—			—		18
Export Revenues	14			—		—		24			—		38
Depreciation, Depletion and Amortization	28			50		2		12			—		92
Basis of Real Estate Sold	—			—		132		—			—		132
Other Operating Gain	1			—		—		2			5		8
Operating Income (Loss)	13			107		180		24			23		347
2009
External Revenues	$	198		$	347	$	486	$	245		$	18	$	1,294
Intersegment Revenues	14			—		—		—			—		14
Export Revenues	11			—		—		21			—		32
Depreciation, Depletion and Amortization	30			51		1		23			—		105
Basis of Real Estate Sold	—			—		155		—			—		155
Operating Income (Loss)	(3		)	81		278		(23		)	17		350

^(A)  The Operating Partnership recognized impairment losses on sales of timberlands expected to close within a twelve-month period of $1 million in 2011, $1 million in 2010 and $3 million in 2009. Impairments are recognized as part of Cost of Goods Sold and reflected as part of Operating Income.

During 2009, the Operating Partnership completed a non-cash exchange of real estate. The Real Estate Segment recognized revenue of $25 million which represents the fair value of the exchange. No operating income was recognized in the transaction as the book value of the timberlands disposed of approximated the exchange value of $25 million. The Basis of Real Estate Sold in the table above and in the Consolidated Statements of Cash Flows does not include the $25 million of basis for the timberlands relinquished in the non-cash exchange.

During 2008, the Operating Partnership negotiated the sale of 310,000 acres in Montana, which closed in three phases. For 2010, the Real Estate Segment includes revenue of $89 million and operating income of $37 million related to the closing of the third and final phase. For 2009, the Real Estate Segment includes revenue of $250 million and operating income of $162 million related to the closing of the second phase.

^(B)  During 2010, the Operating Partnership sold certain lumber manufacturing assets for a gain of $2 million. The gain is reported as Other Operating Gain in our Manufactured Products Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

For 2009, the Manufactured Products Segment depreciation, depletion and amortization, and operating income (loss) include a $10 million lumber manufacturing assets impairment loss.

^(C)  During 2011, the Operating Partnership received a payment of $2 million for the settlement of a dispute that related to certain mineral rights. The payment is reported as Other Operating Gain in our Other Segment and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the Operating Partnership agreed to terminate a land lease for consideration of $5 million from the lessor. The land lease had been accounted for as an operating lease. The consideration is reported as Other Operating Gain in our Other Segment since the consideration was primarily for the release of mineral rights and is included in Other Operating Income (Expense), net in the Consolidated Statements of Income.

During 2010, the Operating Partnership received $21 million for the sale of an undivided 50% interest in natural gas rights on approximately 110,000 acres in West Virginia and to modify an existing natural gas lease on the same acres. The Operating Partnership allocated the proceeds based on relative fair value and determined that $11 million was for the sale of the natural gas rights and $10 million was for a lease bonus related to the modification of exploration rights under the existing lease. The fair value of the undivided 50% interest in natural gas rights was derived using an income approach based on discounted future cash flows. For 2010, the sale is reported as Gain on Sale of Properties, net of tax in the Consolidated Statements of Income and was not included in the Other Segment’s operating income. The fair value of the modification to the exploration rights under the existing lease was based on market analyses and comparable leases. The $10 million, along with the remaining deferred revenue at the time of the modification of $12 million associated with the original granting of exploration rights in 2008, is being amortized into revenue of the Other Segment over the expected three-year term.

^(D)  Consolidated depreciation, depletion and amortization includes unallocated corporate depreciation of $4 million for 2011, 2010 and 2009.

Reconciliation of Total Segment Operating Income to Consolidated Income Before Income Taxes

A reconciliation of total segment operating income to income before income taxes is presented below for the years ended December 31 (in millions):

	2011			2010			2009
Total Segment Operating Income	$	329		$	347		$	350
Corporate and Other Unallocated Expenses	(55		)	(51		)	(51		)
Other Unallocated Operating Income (Expense), net	1			1			—
Operating Income	275			297			299
Equity Earnings from Timberland Venture	56			57			55
Interest Expense, net	(81		)	(80		)	(89		)
Gain (Loss) on Extinguishment of Debt	—			(13		)	(2		)
Income before Income Taxes	$	250		$	261		$	263

XML

Employee Pension and Retirement Plans

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Employee Pension and Retirement Plans

EMPLOYEE PENSION AND RETIREMENT PLANS

Pension Plan—General. The company provides defined benefit pension plans that cover substantially all employees of the company. Most of the company’s salaried and all hourly employees who complete one year of service in which they work at least 1,000 hours are eligible to participate in the plan. Participants vest after three years of service. The cash balance benefits for salaried employees is determined based primarily on certain percentages of compensation, age, years of service and interest accrued based on the 30-year Treasury bond rate. Participants who were employees of the company on September 1, 2000, earn benefits based on the greater of the cash balance formula or a monthly pension benefit that is principally based on the highest monthly average earnings during any consecutive sixty-month out of 120-month period and the number of years of service credit. The benefits to hourly employees are generally based on a fixed amount per year of service.

The company maintains a qualified defined benefit pension plan and two non-qualified defined benefit pension plans. Assets related to the non-qualified plans are held in a grantor trust and are subject to the claims of creditors in the event of bankruptcy. As a result, pension assets for the non-qualified plans are not considered plan assets, and therefore, have not been netted against our pension liability. Pension assets for the non-qualified plans are included in “Investment in Grantor Trusts” and the related pension liability is included in “Other Current Liabilities” and “Other Liabilities” in our Consolidated Balance Sheets.

Funded Status. The following table provides a reconciliation of benefit obligations, plan assets, and funded status of the plans for the years ended December 31 (in millions):

	2011			2010
Change in Benefit Obligation
Benefit Obligation at Beginning of Period	$	135		$	130
Service Cost	6			6
Interest Cost	8			7
Actuarial Loss	21			1
Benefits Paid	(6		)	(9		)
Benefit Obligation at End of Period	$	164		$	135
Change in Plan Assets
Fair Value of Plan Assets at Beginning of Period	$	106		$	96
Actual Return on Plan Assets	(3		)	14
Employer Contributions	3			5
Benefits Paid	(6		)	(9		)
Fair Value of Plan Assets at End of Period	100			106
Funded Status—December 31	$	(64	)	$	(29	)
Amounts Recognized in the Consolidated Balance Sheet
Current Liabilities	$	4		$	3
Other Long-Term Liabilities	60			26
Total	$	64		$	29

Note: The Benefit Obligation reflects both the qualified and non-qualified (supplemental) plans while the Plan Assets reflects only the qualified plan. The actuarial loss reflected in the change in benefit obligation for 2011 is due primarily to a change in interest rate assumptions for measuring our pension liabilities as of December 31, 2011.

The following table sets forth the benefit obligation, accumulated benefit obligation, plan assets, and assets held in the grantor trust for the qualified and non-qualified pension plans as of December 31 (in millions):

	Qualified Pension Plan				Non-Qualified Pension Plans
	2011		2010		2011		2010
Projected Benefit Obligation	$	128	$	106	$	36	$	29
Accumulated Benefit Obligation	120		101		31		25
Plan Assets	100		106		N/A		N/A
Assets Held in the Grantor Trust	N/A		N/A		31		30

Pension contributions are significantly impacted by investment returns and changes in interest rates. It is generally the company’s policy to fund the qualified plan annually such that the fair value of plan assets equals or exceeds the actuarially computed accumulated benefit obligation (the approximate actuarially computed current pension obligation if the plan was discontinued) over a market cycle (generally 3 to 5 years). During 2011, the company contributed $3 million to the qualified pension plan and did not make any contributions to its grantor trust associated with the non-qualified plans. During 2010, the company contributed $4 million to the qualified pension plan and contributed $1 million to its grantor trust associated with the non-qualified plans. Based on current interest rates and expected returns, the company expects 2012 contributions to the qualified pension plan to range between $3 million and $7 million. During 2012, the company expects to contribute between $0 million and $2 million to its grantor trust associated with the non-qualified plans.

Pension Cost and Assumptions. The components of pension cost recognized in net income are as follows for the years ended December 31 (in millions):

	2011			2010			2009
Service Cost	$	6		$	6		$	7
Interest Cost	8			7			8
Expected Return on Plan Assets	(7		)	(7		)	(8		)
Recognized Actuarial Loss	2			2			2
Settlement Loss	—			—			5
Total Pension Cost	$	9		$	8		$	14

During 2009, the company permanently closed two lumber mills, curtailed two lumber mills and had additional employee terminations. The majority of the employees terminated elected to receive a lump-sum distribution from the pension plan. In accordance with the accounting for settlements, curtailments and certain termination benefits, we recorded a $5 million settlement loss as a result of the lump-sum distributions for the year ended December 31, 2009. The settlement loss represents a partial recognition of the actuarial pension loss reflected in accumulated other comprehensive income. It is the company’s accounting policy to recognize a settlement gain or loss when total settlements for the year exceed the sum of the current period interest and service costs.

The components of pension cost recognized in comprehensive income are as follows for the years ended December 31 (in millions):

	2011			2010			2009
Net Actuarial Loss (Gain)	$	31		$	(6	)	$	(3	)
Amortization of Net Actuarial Loss	(2		)	(2		)	(2		)
Effect of Settlements and Curtailments	—			—			(5		)
Total (Gain) Loss Recognized in Other Comprehensive Income	$	29		$	(8	)	$	(10	)
Combined Pension Cost Recognized in Comprehensive Income	$	38		$	—		$	4

Amounts included in accumulated other comprehensive income are as follows as of December 31 (in millions):

	2011			2010
Net Loss	$	53		$	24
Deferred Tax Benefit	$	(12	)	$	(6	)

During 2012, we expect $4 million of the $53 million net actuarial loss to be included as a component of our total pension cost.

The qualified pension plan allows terminated employees to elect to receive pension benefits either as a lump-sum distribution or as annuity payments. The non-qualified plans only provide for lump-sum distributions. Management estimates that approximately half of the qualified plan participants will elect a lump-sum payment upon termination. Therefore, approximately 50% of the benefit obligation for the qualified plan is discounted based on high quality corporate bond yields while approximately 50% of the qualified plan and 100% of the non-qualified plans are discounted based on yields on 30-year U.S. Treasury bonds. Weighted-average assumptions used to determine benefit obligation are as follows:

	December 31, 2011		December 31, 2010
Discount Rates
Annuity Distributions	4.95	%	5.90	%
Lump-Sum Distributions	3.02	%	4.19	%
Rate of Compensation Increase	3.45	%	3.45	%

Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31:

	2011		2010		2009
Discount Rate	5.90	%	5.90	%	6.85	%
Expected Long-Term Return on Plan Assets	7.50	%	7.75	%	7.75	%
Rate of Compensation Increase	3.45	%	3.45	%	3.70	%

To develop the expected long-term rate of return on plan assets assumption, the company considered the current level of expected returns on risk-free investments (primarily government bonds), the historical level of the risk premium associated with the other asset classes in which the portfolio is invested and the expectations for future returns on each asset class. The expected return for each asset class was then weighted based on the target asset allocation to develop the expected long-term rate of return on plan assets assumption for the portfolio. This resulted in the selection of the 7.50% assumption as of January 1, 2011 and the 7.75% assumption as of January 1, 2010.

The market related value of plan assets for the qualified plan is a calculated value that spreads unexpected investment returns over three years. The market-related value of assets held in a grantor trust for the non-qualified plans is fair market value. There has been no change in the method for determining the market-related value of assets since the prior valuation.

Investment Policies and Strategies. Investment allocation decisions are made to achieve maximum returns at a reasonable risk for the company’s pension assets over a full market cycle and are made without regard to future pension obligations. At December 31, 2011, target allocations for the various asset classes are as follows:

Large Capitalization Domestic Equities	32	%
Small and Mid-Size Capitalization Domestic Equities	7	%
International Equities	26	%
Fixed Income	35	%

The company currently uses actively managed funds and index funds, utilizing seven fund managers, to capture favorable returns in various asset classes and to diversify risk. Mutual funds invest in a diversified portfolio. Equity Securities and Collective Trust Funds are invested in a diversified portfolio whereby no more than 5% of an equity portfolio can be invested in a single company and fund managers are expected to be well diversified with respect to industry and economic sectors. Equity investments are limited to common stocks, common stock equivalents and preferred stock. Additionally, no more than 10% of a fixed income portfolio can be invested in a single issuer (other than U.S. treasuries). Fixed income investments are limited to U.S. treasuries, agencies of the U.S. Government, domestic corporations, municipalities, domestic banks and other U.S. financial institutions. Pension assets are analyzed at least quarterly and rebalanced as needed to maintain the target allocations.

Over a full market cycle, the investment goals (net of related fees) for the company’s various asset classes are as follows:

• Large Cap. Domestic Equities—For actively managed funds performance should exceed the applicable benchmark (e.g., Russell 1000 Growth or Russell 1000 Value Indexes) by 0.50% per annum, while index funds should match the performance of the applicable benchmark (e.g. S&P 500 Index).

• Small and Mid. Cap. Domestic Equities—For index funds performance should match the applicable benchmark (e.g. Russell 2000 Index).

• International Equities—For actively managed funds performance should exceed the applicable benchmark (e.g. MSCI EAFE Index) by 1.00% per annum, while index funds should match the performance of the applicable benchmark (e.g. MSCI Emerging Markets Index).

• Fixed Income Securities—Fund performance should exceed the applicable benchmark (e.g., Barclays Capital Aggregate Bond, Barclays Capital High Yield, or Barclays Capital U.S. Credit Indexes) by 0.25% per annum.

Fair Value of Pension Plan Assets. The fair values of each major class of plan assets were as follows as of December 31, 2011 (in millions):

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	11		—		—		11
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	11		—		—		11
Small and Mid. Cap. Domestic Equity Securities	7		—		—		7
International Equity Securities	25		—		—		25
Fixed Income Securities	30		—		—		30
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		5		—		5
Total Investments Measured at Fair Value	$	84	$	16	$	—	$	100

The fair values of each major class of plan assets were as follows as of December 31, 2010 (in millions):

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	12		—		—		12
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	12		—		—		12
Small and Mid. Cap. Domestic Equity Securities	8		—		—		8
International Equity Securities	28		—		—		28
Fixed Income Securities	29		—		—		29
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		6		—		6
Total Investments Measured at Fair Value	$	89	$	17	$	—	$	106

The valuation techniques and inputs used to measure fair value for each major class of plan assets were as follows (there have been no changes in these techniques and inputs during the year ended December 31, 2011):

• The fair value of equity securities (common stocks) and mutual funds is derived from quoted market prices in active markets at the measurement date.

• The fair value of the underlying assets of the collective trust funds is determined using the net asset values. The net asset values are based on the fair value of the underlying assets of the funds, minus their liabilities, and then divided by the number of units outstanding at the valuation date. The funds are traded on private markets that are not active; however, the unit price is based primarily on observable market data of the fund’s underlying assets.

Projected Benefit Payments. The following table presents expected future benefit payments projected based on the same assumptions used by the company to measure the benefit obligation and estimate future employee service (in millions):

Year	Projected Benefit Payments
2012	$	13
2013	13
2014	13
2015	13
2016	14
2017 through 2021	72

Thrift and Profit Sharing Plan. The company sponsors an employee thrift and profit sharing plan under Section 401(k) of the Internal Revenue Code. This plan covers substantially all full-time employees. The company matches employee contributions of up to six percent of compensation at rates ranging from 35% to 100%, depending upon financial performance.

The employer match was 100% for 2011, 2010 and 2009. Amounts charged to expense relating to the company’s thrift and profit sharing plan were $4 million in 2011, 2010 and 2009.

PLUM CREEK TIMBERLANDS L P [Member]

Employee Pension and Retirement Plans

EMPLOYEE PENSION AND RETIREMENT PLANS

Pension Plan—General. Plum Creek Timberlands, L.P. sponsors defined benefit pension plans that cover substantially all employees of the Operating Partnership. Most of the Operating Partnership’s salaried and all hourly employees who complete one year of service in which they work at least 1,000 hours are eligible to participate in the plan. Participants vest after three years of service. The cash balance benefits for salaried employees is determined based primarily on certain percentages of compensation, age, years of service and interest accrued based on the 30-year Treasury bond rate. Participants who were employees of the Operating Partnership on September 1, 2000, earn benefits based on the greater of the cash balance formula or a monthly pension benefit that is principally based on the highest monthly average earnings during any consecutive sixty-month out of 120-month period and the number of years of service credit. The benefits to hourly employees are generally based on a fixed amount per year of service.

The Operating Partnership maintains a qualified defined benefit pension plan and two non-qualified defined benefit pension plans. Assets related to the non-qualified plans are held in a grantor trust and are subject to the claims of creditors in the event of bankruptcy. As a result, pension assets for the non-qualified plans are not considered plan assets, and therefore, have not been netted against our pension liability. Pension assets for the non-qualified plans are included in “Investment in Grantor Trusts” and the related pension liability is included in “Other Current Liabilities” and “Other Liabilities” in our Consolidated Balance Sheets.

Funded Status. The following table provides a reconciliation of benefit obligations, plan assets, and funded status of the plans for the years ended December 31 (in millions):

	2011			2010
Change in Benefit Obligation
Benefit Obligation at Beginning of Period	$	135		$	130
Service Cost	6			6
Interest Cost	8			7
Actuarial Loss	21			1
Benefits Paid	(6		)	(9		)
Benefit Obligation at End of Period	$	164		$	135
Change in Plan Assets
Fair Value of Plan Assets at Beginning of Period	$	106		$	96
Actual Return on Plan Assets	(3		)	14
Employer Contributions	3			5
Benefits Paid	(6		)	(9		)
Fair Value of Plan Assets at End of Period	100			106
Funded Status—December 31	$	(64	)	$	(29	)
Amounts Recognized in the Consolidated Balance Sheet
Current Liabilities	$	4		$	3
Other Long-Term Liabilities	60			26
Total	$	64		$	29

Note: The Benefit Obligation reflects both the qualified and non-qualified (supplemental) plans while the Plan Assets reflects only the qualified plan. The actuarial loss reflected in the change in benefit obligation for 2011 is due primarily to a change in interest rate assumptions for measuring our pension liabilities as of December 31, 2011.

The following table sets forth the benefit obligation, accumulated benefit obligation, plan assets, and assets held in the grantor trust for the qualified and non-qualified pension plans as of December 31 (in millions):

	Qualified Pension Plan				Non-Qualified Pension Plans
	2011		2010		2011		2010
Projected Benefit Obligation	$	128	$	106	$	36	$	29
Accumulated Benefit Obligation	120		101		31		25
Plan Assets	100		106		N/A		N/A
Assets Held in the Grantor Trust	N/A		N/A		31		30

Pension contributions are significantly impacted by investment returns and changes in interest rates. It is generally the Operating Partnership’s policy to fund the qualified plan annually such that the fair value of plan assets equals or exceeds the actuarially computed accumulated benefit obligation (the approximate actuarially computed current pension obligation if the plan was discontinued) over a market cycle (generally 3 to 5 years). During 2011, the Operating Partnership contributed $3 million to the qualified pension plan and did not make any contributions to its grantor trust associated with the non-qualified plans. During 2010, the Operating Partnership contributed $4 million to the qualified pension plan and contributed $1 million to its grantor trust associated with the non-qualified plans. Based on current interest rates and expected returns, the Operating Partnership expects 2012 contributions to the qualified pension plan to range between $3 million and $7 million. During 2012, the Operating Partnership expects to contribute between $0 million and $2 million to its grantor trust associated with the non-qualified plans.

Pension Cost and Assumptions. The components of pension cost recognized in net income are as follows for the years ended December 31 (in millions): 

	2011			2010			2009
Service Cost	$	6		$	6		$	7
Interest Cost	8			7			8
Expected Return on Plan Assets	(7		)	(7		)	(8		)
Recognized Actuarial Loss	2			2			2
Settlement Loss	—			—			5
Total Pension Cost	$	9		$	8		$	14

During 2009, the Operating Partnership permanently closed two lumber mills, curtailed two lumber mills and had additional employee terminations. The majority of the employees terminated elected to receive a lump-sum distribution from the pension plan. In accordance with the accounting for settlements, curtailments and certain termination benefits, we recorded a $5 million settlement loss as a result of the lump-sum distributions for the year ended December 31, 2009. The settlement loss represents a partial recognition of the actuarial pension loss reflected in accumulated other comprehensive income. It is the Operating Partnership’s accounting policy to recognize a settlement gain or loss when total settlements for the year exceed the sum of the current period interest and service costs.

The components of pension cost recognized in comprehensive income are as follows for the years ended December 31 (in millions): 

	2011			2010			2009
Net Actuarial Loss (Gain)	$	31		$	(6	)	$	(3	)
Amortization of Net Actuarial Loss	(2		)	(2		)	(2		)
Effect of Settlements and Curtailments	—			—			(5		)
Total (Gain) Loss Recognized in Other Comprehensive Income	$	29		$	(8	)	$	(10	)
Combined Pension Cost Recognized in Comprehensive Income	$	38		$	—		$	4

Amounts included in accumulated other comprehensive income are as follows as of December 31 (in millions):

	2011			2010
Net Loss	$	53		$	24
Deferred Tax Benefit	$	(12	)	$	(6	)

During 2012, we expect $4 million of the $53 million net actuarial loss to be included as a component of our total pension cost.

The qualified pension plan allows terminated employees to elect to receive pension benefits either as a lump-sum distribution or as annuity payments. The non-qualified plans only provide for lump-sum distributions. Management estimates that approximately half of the qualified plan participants will elect a lump-sum payment upon termination. Therefore, approximately 50% of the benefit obligation for the qualified plan is discounted based on high quality corporate bond yields while approximately 50% of the qualified plan and 100% of the non-qualified plans are discounted based on yields on 30-year U.S. Treasury bonds. Weighted-average assumptions used to determine benefit obligation are as follows: 

	December 31, 2011		December 31, 2010
Discount Rates
Annuity Distributions	4.95	%	5.90	%
Lump-Sum Distributions	3.02	%	4.19	%
Rate of Compensation Increase	3.45	%	3.45	%

Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31: 

	2011		2010		2009
Discount Rate	5.90	%	5.90	%	6.85	%
Expected Long-Term Return on Plan Assets	7.50	%	7.75	%	7.75	%
Rate of Compensation Increase	3.45	%	3.45	%	3.70	%

To develop the expected long-term rate of return on plan assets assumption, the Operating Partnership considered the current level of expected returns on risk-free investments (primarily government bonds), the historical level of the risk premium associated with the other asset classes in which the portfolio is invested and the expectations for future returns on each asset class. The expected return for each asset class was then weighted based on the target asset allocation to develop the expected long-term rate of return on plan assets assumption for the portfolio. This resulted in the selection of the 7.50% assumption as of January 1, 2011 and the 7.75% assumption as of January 1, 2010.

The market related value of plan assets for the qualified plan is a calculated value that spreads unexpected investment returns over three years. The market-related value of assets held in a grantor trust for the non-qualified plans is fair market value. There has been no change in the method for determining the market-related value of assets since the prior valuation.

Investment Policies and Strategies. Investment allocation decisions are made to achieve maximum returns at a reasonable risk for the Operating Partnership’s pension assets over a full market cycle and are made without regard to future pension obligations. At December 31, 2011, target allocations for the various asset classes are as follows:

Large Capitalization Domestic Equities	32	%
Small and Mid-Size Capitalization Domestic Equities	7	%
International Equities	26	%
Fixed Income	35	%

The Operating Partnership currently uses actively managed funds and index funds, utilizing seven fund managers, to capture favorable returns in various asset classes and to diversify risk. Mutual funds invest in a diversified portfolio. Equity Securities and Collective Trust Funds are invested in a diversified portfolio whereby no more than 5% of an equity portfolio can be invested in a single company and fund managers are expected to be well diversified with respect to industry and economic sectors. Equity investments are limited to common stocks, common stock equivalents and preferred stock. Additionally, no more than 10% of a fixed income portfolio can be invested in a single issuer (other than U.S. treasuries). Fixed income investments are limited to U.S. treasuries, agencies of the U.S. Government, domestic corporations, municipalities, domestic banks and other U.S. financial institutions. Pension assets are analyzed at least quarterly and rebalanced as needed to maintain the target allocations.

Over a full market cycle, the investment goals (net of related fees) for the Operating Partnership’s various asset classes are as follows:

• Large Cap. Domestic Equities—For actively managed funds performance should exceed the applicable benchmark (e.g., Russell 1000 Growth or Russell 1000 Value Indexes) by 0.50% per annum, while index funds should match the performance of the applicable benchmark (e.g. S&P 500 Index).

• Small and Mid. Cap. Domestic Equities—For index funds performance should match the applicable benchmark (e.g. Russell 2000 Index).

• International Equities—For actively managed funds performance should exceed the applicable benchmark (e.g. MSCI EAFE Index) by 1.00% per annum, while index funds should match the performance of the applicable benchmark (e.g. MSCI Emerging Markets Index).

• Fixed Income Securities—Fund performance should exceed the applicable benchmark (e.g., Barclays Capital Aggregate Bond, Barclays Capital High Yield, or Barclays Capital U.S. Credit Indexes) by 0.25% per annum.

Fair Value of Pension Plan Assets. The fair values of each major class of plan assets were as follows as of December 31, 2011 (in millions):

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	11		—		—		11
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	11		—		—		11
Small and Mid. Cap. Domestic Equity Securities	7		—		—		7
International Equity Securities	25		—		—		25
Fixed Income Securities	30		—		—		30
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		5		—		5
Total Investments Measured at Fair Value	$	84	$	16	$	—	$	100

The fair values of each major class of plan assets were as follows as of December 31, 2010 (in millions): 

	Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Money Market Funds	$	—	$	—	$	—	$	—
Equity Securities:
Large Cap. Domestic	12		—		—		12
Mutual Funds invested in:
Large Cap. Domestic Equity Securities	12		—		—		12
Small and Mid. Cap. Domestic Equity Securities	8		—		—		8
International Equity Securities	28		—		—		28
Fixed Income Securities	29		—		—		29
Collective Trust Funds invested in:
Large Cap. Domestic Equity Securities	—		11		—		11
Fixed Income Securities	—		6		—		6
Total Investments Measured at Fair Value	$	89	$	17	$	—	$	106

The valuation techniques and inputs used to measure fair value for each major class of plan assets were as follows (there have been no changes in these techniques and inputs during the year ended December 31, 2011):

• The fair value of equity securities (common stocks) and mutual funds is derived from quoted market prices in active markets at the measurement date.

• The fair value of the underlying assets of the collective trust funds is determined using the net asset values. The net asset values are based on the fair value of the underlying assets of the funds, minus their liabilities, and then divided by the number of units outstanding at the valuation date. The funds are traded on private markets that are not active; however, the unit price is based primarily on observable market data of the fund’s underlying assets.

Projected Benefit Payments. The following table presents expected future benefit payments projected based on the same assumptions used by the Operating Partnership to measure the benefit obligation and estimate future employee service (in millions): 

Year	Projected Benefit Payments
2012	$	13
2013	13
2014	13
2015	13
2016	14
2017 through 2021	72

Thrift and Profit Sharing Plan. The Operating Partnership sponsors an employee thrift and profit sharing plan under Section 401(k) of the Internal Revenue Code. This plan covers substantially all full-time employees. The Operating Partnership matches employee contributions of up to six percent of compensation at rates ranging from 35% to 100%, depending upon financial performance.

The employer match was 100% for 2011, 2010 and 2009. Amounts charged to expense relating to the Operating Partnership’s thrift and profit sharing plan were $4 million in 2011, 2010 and 2009.

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Segment Information (Reconciliation of Total Segment Operating Income to Consolidated Income Before Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Operating Income (Loss)	$ 83	$ 69	$ 63	$ 60	$ 95	$ 51	$ 56	$ 95	$ 275		$ 297		$ 299
Equity Earnings from Timberland Venture									56		57		55
Total Interest Expense, net									(139)		(138)		(147)
Loss on Extinguishment of Debt									0		(13)		(2)
Income before Income Taxes									192		203		205
PLUM CREEK TIMBERLANDS L P [Member]
Operating Income (Loss)	83	69	63	60	95	51	56	95	275		297		299
Equity Earnings from Timberland Venture									56		57		55
Total Interest Expense, net									(81)		(80)		(89)
Loss on Extinguishment of Debt									0		(13)		(2)
Income before Income Taxes									250		261		263
Operating Segments [Member] | PLUM CREEK TIMBER CO INC [Member]
Operating Income (Loss)									329	[1]	347	[1]	350	[1]
Operating Segments [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Operating Income (Loss)									329	[1]	347	[1]	350	[1]
Unallocated Amount to Segment [Member] | PLUM CREEK TIMBER CO INC [Member]
Operating Income (Loss)									(55)		(51)		(51)
Unallocated Amount to Segment [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Operating Income (Loss)									(55)		(51)		(51)
Other Unallocated Operating Income Expense Net [Member] | PLUM CREEK TIMBER CO INC [Member]
Operating Income (Loss)									1		1		0
Other Unallocated Operating Income Expense Net [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Operating Income (Loss)									$ 1		$ 1		$ 0

[1] Consolidated depreciation, depletion and amortization includes unallocated corporate depreciation of $4 million for 2011, 2010 and 2009.

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Variable Interest Entities

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Variable Interest Entities

VARIABLE INTEREST ENTITIES

The Timberland Venture (see Note 16 of the Notes to Consolidated Financial Statements) is a variable interest entity. The primary operating activities of the Timberland Venture consist of owning timberlands and entering into cutting contracts with an affiliate of the other member. Besides quarterly interest payments on the Note Payable to Timberland Venture, the company has not provided financing or other support to the venture. The venture is financed by a $15 million line of credit obtained by the Timberland Venture.

We are not the primary beneficiary of the Timberland Venture. The company does not manage the day-to-day operations of the Timberland Venture, has only limited protective rights and its involvement is generally limited to receiving distributions on its preferred and common interests. We are not the primary beneficiary because we do not direct the activities that most significantly impact the Timberland Venture’s economic performance. We believe that the activities that most significantly impact the Timberland Venture’s economic performance include managing the timberlands along with the timing and extent of the harvesting activities, neither of which we control.

The carrying amount of the investment is $201 million at December 31, 2011 and $201 million at December 31, 2010, and it is reported in the Consolidated Balance Sheets as Equity Investment in Timberland Venture. Our maximum exposure to loss is $201 million, the carrying amount of the investment. Generally, losses are first allocated among the common interests based on positive capital accounts in which we hold a 9% common interest. No losses are allocated to our preferred interest ($705 million) until the common interests have absorbed losses of approximately $861 million.

PLUM CREEK TIMBERLANDS L P [Member]

Variable Interest Entities

VARIABLE INTEREST ENTITIES

The Timberland Venture (see Note 13 of the Notes to Consolidated Financial Statements) is a variable interest entity. The primary operating activities of the Timberland Venture consist of owning timberlands and entering into cutting contracts with an affiliate of the other member. Besides quarterly distributions to PC Ventures which it uses to fund interest payments on the loan owed by PC Ventures, the Operating Partnership has not provided financing or other support to the venture. The venture is financed by a $15 million line of credit obtained by the Timberland Venture.

We are not the primary beneficiary of the Timberland Venture. PC Member does not manage the day-to-day operations of the Timberland Venture, has only limited protective rights and its involvement is generally limited to receiving distributions on its preferred and common interests. We are not the primary beneficiary because we do not direct the activities that most significantly impact the Timberland Venture’s economic performance. We believe that the activities that most significantly impact the Timberland Venture’s economic performance include managing the timberlands along with the timing and extent of the harvesting activities, neither of which we control.

The carrying amount of the investment is $201 million at December 31, 2011 and $201 million at December 31, 2010, and it is reported in the Consolidated Balance Sheets as Equity Investment in Timberland Venture. Our maximum exposure to loss is $201 million, the carrying amount of the investment. Generally, losses are first allocated among the common interests based on positive capital accounts in which we hold a 9% common interest. No losses are allocated to our preferred interest ($705 million) until the common interests have absorbed losses of approximately $861 million.

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Employee Pension and Retirement Plans (Fair Values of Each Major Category of Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Total Investments Measured at Fair Value	$ 100	$ 106
PLUM CREEK TIMBER CO INC [Member] | Money Market Funds [Member]
Money Market Funds	0	0
PLUM CREEK TIMBER CO INC [Member] | Equity Securities [Member]
Large Cap. Domestic Equity Securities	11	12
PLUM CREEK TIMBER CO INC [Member] | Mutual Funds Investment [Member]
Large Cap. Domestic Equity Securities	11	12
Small and Mid. Cap. Domestic Equity Securities	7	8
International Equity Securities	25	28
Fixed Income Securities	30	29
PLUM CREEK TIMBER CO INC [Member] | Collective Trust Funds Investments [Member]
Large Cap. Domestic Equity Securities	11	11
Fixed Income Securities	5	6
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member]
Total Investments Measured at Fair Value	84	89
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member] | Money Market Funds [Member]
Money Market Funds	0	0
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member] | Equity Securities [Member]
Large Cap. Domestic Equity Securities	11	12
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member] | Mutual Funds Investment [Member]
Large Cap. Domestic Equity Securities	11	12
Small and Mid. Cap. Domestic Equity Securities	7	8
International Equity Securities	25	28
Fixed Income Securities	30	29
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member] | Collective Trust Funds Investments [Member]
Large Cap. Domestic Equity Securities	0	0
Fixed Income Securities	0	0
PLUM CREEK TIMBER CO INC [Member] | Fair Value, Inputs, Level 2 [Member]
Total Investments Measured at Fair Value	16	17
PLUM CREEK TIMBER CO INC [Member] | Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Money Market Funds	0	0
PLUM CREEK TIMBER CO INC [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Large Cap. Domestic Equity Securities	0	0
PLUM CREEK TIMBER CO INC [Member] | Fair Value, Inputs, Level 2 [Member] | Mutual Funds Investment [Member]
Large Cap. Domestic Equity Securities	0	0
Small and Mid. Cap. Domestic Equity Securities	0	0
International Equity Securities	0	0
Fixed Income Securities	0	0
PLUM CREEK TIMBER CO INC [Member] | Fair Value, Inputs, Level 2 [Member] | Collective Trust Funds Investments [Member]
Large Cap. Domestic Equity Securities	11	11
Fixed Income Securities	5	6
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member]
Total Investments Measured at Fair Value	0	0
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member] | Money Market Funds [Member]
Money Market Funds	0	0
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member] | Equity Securities [Member]
Large Cap. Domestic Equity Securities	0	0
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member] | Mutual Funds Investment [Member]
Large Cap. Domestic Equity Securities	0	0
Small and Mid. Cap. Domestic Equity Securities	0	0
International Equity Securities	0	0
Fixed Income Securities	0	0
PLUM CREEK TIMBER CO INC [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member] | Collective Trust Funds Investments [Member]
Large Cap. Domestic Equity Securities	0	0
Fixed Income Securities	0	0
PLUM CREEK TIMBERLANDS L P [Member]
Total Investments Measured at Fair Value	100	106
PLUM CREEK TIMBERLANDS L P [Member] | Money Market Funds [Member]
Money Market Funds	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Equity Securities [Member]
Large Cap. Domestic Equity Securities	11	12
PLUM CREEK TIMBERLANDS L P [Member] | Mutual Funds Investment [Member]
Large Cap. Domestic Equity Securities	11	12
Small and Mid. Cap. Domestic Equity Securities	7	8
International Equity Securities	25	28
Fixed Income Securities	30	29
PLUM CREEK TIMBERLANDS L P [Member] | Collective Trust Funds Investments [Member]
Large Cap. Domestic Equity Securities	11	11
Fixed Income Securities	5	6
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member]
Total Investments Measured at Fair Value	84	89
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member] | Money Market Funds [Member]
Money Market Funds	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member] | Equity Securities [Member]
Large Cap. Domestic Equity Securities	11	12
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member] | Mutual Funds Investment [Member]
Large Cap. Domestic Equity Securities	11	12
Small and Mid. Cap. Domestic Equity Securities	7	8
International Equity Securities	25	28
Fixed Income Securities	30	29
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1 Measurements) [Member] | Collective Trust Funds Investments [Member]
Large Cap. Domestic Equity Securities	0	0
Fixed Income Securities	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value, Inputs, Level 2 [Member]
Total Investments Measured at Fair Value	16	17
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Money Market Funds	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Large Cap. Domestic Equity Securities	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value, Inputs, Level 2 [Member] | Mutual Funds Investment [Member]
Large Cap. Domestic Equity Securities	0	0
Small and Mid. Cap. Domestic Equity Securities	0	0
International Equity Securities	0	0
Fixed Income Securities	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value, Inputs, Level 2 [Member] | Collective Trust Funds Investments [Member]
Large Cap. Domestic Equity Securities	11	11
Fixed Income Securities	5	6
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member]
Total Investments Measured at Fair Value	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member] | Money Market Funds [Member]
Money Market Funds	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member] | Equity Securities [Member]
Large Cap. Domestic Equity Securities	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member] | Mutual Funds Investment [Member]
Large Cap. Domestic Equity Securities	0	0
Small and Mid. Cap. Domestic Equity Securities	0	0
International Equity Securities	0	0
Fixed Income Securities	0	0
PLUM CREEK TIMBERLANDS L P [Member] | Fair Value Measurements Using Significant Unobservable Inputs (Level 3 Measurements) [Member] | Collective Trust Funds Investments [Member]
Large Cap. Domestic Equity Securities	0	0
Fixed Income Securities	$ 0	$ 0

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Timberland Venture - Equity Method Investment (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Equity Earnings for the Timberland Venture

Equity earnings for the Timberland Venture consist of the following for the years ended December 31 (in millions):

	2011		2010		2009
Preferred Interest	$	50	$	50	$	48
Common Interest	—		—		—
Amortization of Basis Difference	6		7		7
Total Equity Earnings from Timberland Venture	$	56	$	57	$	55

Distributions from the Timberland Venture consist of the following for the years ended December 31 (in millions):

	2011		2010		2009
Preferred Interest	$	56	$	56	$	53
Common Interest	—		1		—
Total Distributions from Timberland Venture	56		57		53

PLUM CREEK TIMBERLANDS L P [Member]

Equity Earnings for the Timberland Venture

Equity earnings for the Timberland Venture consist of the following for the years ended December 31 (in millions): 

	2011		2010		2009
Preferred Interest	$	50	$	50	$	48
Common Interest	—		—		—
Amortization of Basis Difference	6		7		7
Total Equity Earnings from Timberland Venture	$	56	$	57	$	55

Distributions from the Timberland Venture consist of the following for the years ended December 31 (in millions):

	2011		2010		2009
Preferred Interest	$	56	$	56	$	53
Common Interest	—		1		—
Total Distributions from Timberland Venture	$	56	$	57	$	53

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Timberland Venture - Equity Method Investment (Narrative)(Details) (USD $) In Millions, unless otherwise specified				12 Months Ended		12 Months Ended
	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2008 PC Ventures [Member]	Dec. 31, 2008 Preferred Interest [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 Preferred Interest [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2008 Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member] acre	Dec. 31, 2008 Timberland Venture [Member] PLUM CREEK TIMBERLANDS L P [Member] acre	Dec. 31, 2011 Note Payable to Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 Note Payable to Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member]
Contributed Acres Of Timberlands To Venture									454,000	454,000
Preferred interest in venture									$ 705	$ 705
Timberland Venture's common interest									9.00%	9.00%
Common interest in venture									78	78
Proceeds from Partnership Contribution				783					783	783
Other Partnership Ownership Percentage									91.00%	91.00%
Amount borrowed from the Timberland Venture	783	783	783			783					783	783
Annual Preferred Interest Return							7.875%	7.875%
Approximate Amount Of Cumulative Preferred Return Per Annum							56	56
Stated interest rate						7.375%					7.375%	7.375%
Interest payments related to the notes												58
Book basis of timberlands contributed			174	174
Capitalized costs in connection with transfer			9	9
Fair value of timberlands contributed			783	783
Equity Method Investment, Underlying Equity in Net Assets			783	783
Difference Between Carrying Amount and Underlying Equity Allocated to Standing Timber			289	289
Difference Between Carrying Amount and Underlying Equity Allocated to Land			320	320
Accumulated Amortization of Basis Difference	21				21
Cumulative Shortfall in Allocated Equity Earnings	$ 20				$ 20

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Restricted Net Assets (Tables) (PLUM CREEK TIMBER CO INC [Member])

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Condensed Unconsolidated Balance Sheet Data

(In Millions)	December 31, 2011			December 31, 2010
Assets
Investment in Consolidated Subsidiaries	$	1,263		$	1,374
Total Assets	$	1,263		$	1,374
Liabilities
Total Liabilities	$	—		$	—
Commitments and Contingencies
Stockholders’ Equity
Common Stock	2			2
Additional Paid-In Capital	2,261			2,243
Retained Earnings (Accumulated Deficit) and Other Equity	(28		)	51
Treasury Stock, at cost	(937		)	(911		)
Accumulated Other Comprehensive Income (Loss)	(35		)	(11		)
Total Stockholders’ Equity	1,263			1,374
Total Liabilities and Equity	$	1,263		$	1,374

Condensed Unconsolidated Statements of Income Data

	Year Ended
(In Millions)	December 31, 2011		December 31, 2010		December 31, 2009
Equity Earnings from Consolidated Subsidiaries	$	193	$	213	$	236
Net Income	$	193	$	213	$	236

Condensed Unconsolidated Statements of Cash Flows Data

	Year Ended
(In Millions)	December 31, 2011			December 31, 2010			December 31, 2009
Cash Flows from Operating Activities:
Net Income	$	193		$	213		$	236
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Equity Earnings from Consolidated Subsidiaries	(193		)	(213		)	(236		)
Net Cash Provided By (Used In) Operating Activities	—			—			—
Net Cash Provided By (Used In) Investing Activities	—			—			—
Cash Flows From Financing Activities:
Cash Dividends	(272		)	(272		)	(275		)
Cash Distribution from Plum Creek Timberlands, L.P.	288			321			362
Proceeds from Stock Option Exercises	10			2			—
Acquisition of Treasury Stock	(26		)	(51		)	(87		)
Net Cash Provided By (Used In) Financing Activities	—			—			—
Increase In Cash and Cash Equivalents	—			—			—
Cash and Cash Equivalents:
Beginning of Year	—			—			—
End of Year	$	—		$	—		$	—

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Variable Interest Entities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2010 PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2010 PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Variable Interest Entity, Not Primary Beneficiary [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Variable Interest Entity, Not Primary Beneficiary [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2011 Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2008 Timberland Venture [Member] PLUM CREEK TIMBER CO INC [Member]	Dec. 31, 2011 Timberland Venture [Member] PLUM CREEK TIMBERLANDS L P [Member]	Dec. 31, 2008 Timberland Venture [Member] PLUM CREEK TIMBERLANDS L P [Member]
Line of Credit							$ 15		$ 15
Equity Investment in Timberland Venture	201	201	201	201
Maximum exposure to loss					201	201
Equity Method Investment, Ownership Percentage								9.00%		9.00%
Preferred interest in venture								705		705
Total Common Interests in Venture							$ 861		$ 861

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Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	75,000,000	75,000,000
Preferred stock, outstanding shares	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized shares	300,634,566	300,600,000
Common stock, outstanding (net of Treasury stock)	161,300,000	161,600,000
Treasury stock, common shares	26,900,000	26,200,000
PLUM CREEK TIMBERLANDS L P [Member]
Investment in Grantor Trusts, amounts at Fair Value	$ 36	$ 35

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Employee Pension and Retirement Plans (Accumulated and Projected Benefit Obligations) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	$ 100	$ 106
PLUM CREEK TIMBER CO INC [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit Obligation	128	106
Accumulated Benefit Obligation	120	101
Fair Value of Plan Assets	100	106
PLUM CREEK TIMBER CO INC [Member] | Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit Obligation	36	29
Accumulated Benefit Obligation	31	25
Assets Held in the Grantor Trust	31	30
PLUM CREEK TIMBERLANDS L P [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	100	106
PLUM CREEK TIMBERLANDS L P [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit Obligation	128	106
Accumulated Benefit Obligation	120	101
Fair Value of Plan Assets	100	106
PLUM CREEK TIMBERLANDS L P [Member] | Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit Obligation	36	29
Accumulated Benefit Obligation	31	25
Assets Held in the Grantor Trust	$ 31	$ 30

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Earnings Per Share

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

The following tables set forth the reconciliation of basic and diluted earnings per share for the years ended December 31 (in millions, except per share amounts):

	2011		2010		2009
Income from Continuing Operations	$	193	$	202	$	236
Gain on Sale of Properties, net of tax	—		11		—
Net Income Available to Common Stockholders	$	193	$	213	$	236
Denominator for Basic Earnings per Share	161.7		162.1		163.3
Effect of Dilutive Securities – Stock Options	0.2		0.1		0.1
Effect of Dilutive Securities – Restricted Stock, Restricted Stock Units and Value Management Plan	0.1		0.1		—
Denominator for Diluted Earnings per Share – Adjusted for Dilutive Securities	162.0		162.3		163.4
Per Share Amounts – Basic:
Income from Continuing Operations	$	1.19	$	1.25	$	1.45
Gain on Sale of Properties, net of tax	$	—	$	0.07	$	—
Net Income	$	1.19	$	1.31	$	1.45
Per Share Amounts – Diluted:
Income from Continuing Operations	$	1.19	$	1.24	$	1.44
Gain on Sale of Properties, net of tax	$	—	$	0.07	$	—
Net Income	$	1.19	$	1.31	$	1.44

Basic and diluted per share amounts are computed independently for each caption presented. Therefore, the sum of the per share components from the table above may not equal the per share amount presented.

Under the company's Stock Incentive Plan (See Note 13 of the Notes to Consolidated Financial Statements), the company grants restricted stock units, which prior to vesting, are entitled to non-forfeitable cash payments equal to dividends paid on the company's common shares. These awards are considered participating securities for purposes of computing basic and diluted earnings per share.

Antidilutive options were excluded for certain periods from the computation of diluted earnings per share because the exercise prices of the options were greater than the average market price of the common shares. Antidilutive options were as follows for the years ended December 31 (shares in millions):

	2011	2010	2009
Number of Options	1.5	2.0	2.2
Range of Exercise Prices	$35.22 to $43.23	$33.75 to $43.23	$30.70 to $43.23
Expiration on or before	February 2021	February 2020	February 2019

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Timber and Timberlands (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 T	Dec. 31, 2011 acre	Dec. 31, 2010 acre	Dec. 31, 2009	Dec. 31, 2008
PLUM CREEK TIMBER CO INC [Member]
Land Acquisitions (Acres)		59,000
Payments to Acquire Timberlands		$ 101	$ 0	$ 1
Land Dispositions(Acres)		185,000	258,000
Term of Fiber Supply Agreement					15 years
Payments to Acquire Timber Deeds	103	5	0	0
TimberDeedTonsPurchased	4,700,000
Timber Deed Cutting Contract Term		8 years
Assets Held for Sale		103	57
PLUM CREEK TIMBER CO INC [Member] | Northern Resources [Member]
Land Dispositions(Acres)		45,000	142,000
PLUM CREEK TIMBER CO INC [Member] | Southern Resources [Member]
Land Dispositions(Acres)		140,000	116,000
PLUM CREEK TIMBER CO INC [Member] | Montana Multi-Phase Sales Transaction [Member]
Land Disposition From Third Phase Of Sale (Acres)			70,000
Revenue from the third phase of the Montana sales transaction			89
Operating income from third phase of Montana sale			37
PLUM CREEK TIMBERLANDS L P [Member]
Land Acquisitions (Acres)		59,000
Payments to Acquire Timberlands		101	0	1
Land Dispositions(Acres)		185,000	258,000
Term of Fiber Supply Agreement					15 years
Payments to Acquire Timber Deeds	103	5	0	0
TimberDeedTonsPurchased	4,700,000
Timber Deed Cutting Contract Term		8 years
Assets Held for Sale		103	57
PLUM CREEK TIMBERLANDS L P [Member] | Northern Resources [Member]
Land Dispositions(Acres)		45,000	142,000
PLUM CREEK TIMBERLANDS L P [Member] | Southern Resources [Member]
Land Dispositions(Acres)		140,000	116,000
PLUM CREEK TIMBERLANDS L P [Member] | Montana Multi-Phase Sales Transaction [Member]
Land Disposition From Third Phase Of Sale (Acres)			70,000
Revenue from the third phase of the Montana sales transaction			89
Operating income from third phase of Montana sale			$ 37

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Stockholders' Equity (Components of Accumulated Other Comprehensive Income Net of Tax) (Details) (PLUM CREEK TIMBER CO INC [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Net Unrealized Holding Gains	$ 6	$ 7
Defined Benefit Plans: Net Loss	(41)	(18)
Accumulated Other Comprehensive Income, Net of Tax	$ (35)	$ (11)

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Timberland Venture - Equity Method Investment (Equity Earnings for the Timberland Venture) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PLUM CREEK TIMBER CO INC [Member]
Preferred Interest	$ 50	$ 50	$ 48
Common Interest	0	0	0
Amortization Of Basis Difference	6	7	7
Total Equity Earnings from Timberland Venture	56	57	55
Preferred Interest Distributions	56	56	53
Common Interest Distributions	0	1	0
Distributions from Timberland Venture	56	57	53
PLUM CREEK TIMBERLANDS L P [Member]
Preferred Interest	50	50	48
Common Interest	0	0	0
Amortization Of Basis Difference	6	7	7
Total Equity Earnings from Timberland Venture	56	57	55
Preferred Interest Distributions	56	56	53
Common Interest Distributions	0	1	0
Distributions from Timberland Venture	$ 56	$ 57	$ 53

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Borrowings (Schedule Of Senior Notes Outstanding) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PLUM CREEK TIMBER CO INC [Member]
Senior Notes	$ 1,292	$ 1,387
PLUM CREEK TIMBERLANDS L P [Member]
Senior Notes	1,292	1,387
Public Debt [Member] | PLUM CREEK TIMBER CO INC [Member]
Senior Notes	1,029	1,029
Public Debt [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Senior Notes	1,029	1,029
Private Debt Including Unamortized Discount [Member] | PLUM CREEK TIMBER CO INC [Member]
Senior Notes	263	358
Private Debt Including Unamortized Discount [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Senior Notes	$ 263	$ 358

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Related Party Transactions

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Related Party Transactions

RELATED PARTY TRANSACTIONS

The company has a common and preferred interest in Southern Diversified Timber, LLC (“the Timberland Venture”), which is accounted for under the equity method of accounting. See Note 16 of the Notes to Consolidated Financial Statements.

Equity earnings and distributions from the Timberland Venture were as follows for the years ended December 31 (in millions): 

	2011		2010		2009
Equity Earnings	$	56	$	57	$	55
Distributions	56		57		53

In 2008, the company borrowed $783 million from the Timberland Venture for a 10-year term at a fixed annual interest rate of 7.375%. The related party obligation is included in the Consolidated Balance Sheet as Note Payable to Timberland Venture. Interest expense and paid with respect to the Note Payable to Timberland Venture were as follows for the years ended December 31 (in millions):

	2011		2010		2009
Interest Expense	$	58	$	58	$	58
Interest Payments	58		58		58

As a result, the company had accrued interest payable for the Note Payable to Timberland Venture at December 31 (in millions):

	2011		2010
Interest Payable (to related party)	$	7	$	7

PLUM CREEK TIMBERLANDS L P [Member]

Related Party Transactions

RELATED PARTY TRANSACTIONS

Transactions with Parent. The Operating Partnership’s parent, Plum Creek Timber Company, Inc., provides share-based compensation plans that cover employees of the Operating Partnership (see Note 10 of the Notes to Consolidated Financial Statements). All of Plum Creek’s activities are conducted through the Operating Partnership. Therefore, all share-based compensation expense is allocated to the Operating Partnership.

Transactions with Other Related Parties. A subsidiary of the Operating Partnership, Plum Creek Timber Operations I, LLC (“PC Member”) has a common and preferred interest in Southern Diversified Timber, LLC (“the Timberland Venture”), which is accounted for under the equity method of accounting. See Note 13 of the Notes to Consolidated Financial Statements. Equity earnings and distributions from the Timberland Venture were as follows for the years ended December 31 (in millions): 

	2011		2010		2009
Equity Earnings	$	56	$	57	$	55
Distributions	56		57		53

In 2008, PC Ventures borrowed $783 million from the Timberland Venture for a 10-year term at a fixed annual interest rate of 7.375%. PC Ventures used the proceeds from the borrowing to make a $783 million capital contribution to the Operating Partnership in exchange for a Series T-1 Redeemable Preferred Limited Partnership Interest. See Note 8 of the Notes to Consolidated Financial Statements. The Operating Partnership made the following cash distributions to PC Ventures for the years ended December 31 (in millions): 

	2011		2010		2009
Cash Distributions	$	58	$	58	$	58

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Subsequent Events (Details) (PLUM CREEK TIMBER CO INC [Member], USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
PLUM CREEK TIMBER CO INC [Member]
Dividends Payable, Date Declared, Day, Month and Year	Feb. 07, 2012
Dividend Payment per Share	$ 0.42
Dividend Payment, Approximately	$ 68
Dividends Payable, Date to be Paid, Day, Month and Year	Mar. 02, 2012
Stockholders of Record Date	Feb. 17, 2012

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Restricted Net Assets (Condensed Unconsolidated Statements of Income Data) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010		Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010		Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net Income											$ 193	$ 213	$ 236
PLUM CREEK TIMBER CO INC [Member]
Net Income	61	50	44	38	59	[1]	32	35	87	[2]	193	213	236
Parent [Member] | PLUM CREEK TIMBER CO INC [Member]
Equity Earnings From Consolidated Subsidiaries											193	213	236
Net Income											$ 193	$ 213	$ 236

[1] During the fourth quarter of 2010, the company paid approximately $226 million to retire $213 million of principal for senior notes scheduled to mature in the fourth quarter of 2011, resulting in a $13 million loss. This loss is included in Gain (Loss) on Extinguishment of Debt in the Consolidated Statements of Income.

[2] The company’s 2010 first quarter net income includes an $11 million ($0.07 per diluted share) Gain on Sale of Properties, net of tax, which was not included in Income from Continuing Operations.

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBER CO INC [Member]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The provision (benefit) for income taxes consists of the following for the years ended December 31 (in millions):

	2011			2010			2009
Current Income Taxes (A):
Federal	$	—		$	—		$	(14	)
State	(2		)	—			(2		)
Deferred Income Taxes:
Federal	—			3			—
State	—			—			—
Utilization of (Benefit from) Operating Loss Carryforward	(2		)	(1		)	(12		)
Change to Valuation Allowance	3			—			—
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

^(A)  Included in the current tax provision for 2009 is a $12 million tax benefit associated with the carryback of net operating losses to 2004 and 2005 as a result of the Worker, Homeownership and Business Assistance Act of 2009.

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The provision (benefit) for income taxes is reconciled as follows to the federal statutory rate for the years ended December 31 (in millions):

	2011			2010			2009
Provision for Income Taxes on Income from Continuing Operations Computed at the Federal Statutory Tax Rate of 35%	$	67		$	71		$	72
REIT Income not Subject to Federal Tax	(68		)	(64		)	(86		)
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Change to Valuation Allowance	3			—			—
State Income Tax Expense (Benefit), net of Federal Benefit	(1		)	—			(2		)
Reversal of Accrued Built-In Gains	—			—			(5		)
Tax Audit Settlements	1			—			—
Permanent Book-Tax Differences	(3		)	(5		)	(7		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

Allocation of Income Tax Benefit

Total income tax provision (benefit) was allocated as follows for the years ended December 31 (in millions):

	2011			2010		2009
Income from Continuing Operations	$	(1	)	$	1	$	(31	)
Other Comprehensive Income	(6		)	2		3
Gain on Sale of Properties	—			—		—
Additional Paid-In Capital (Share-Based Compensation)	—			—		—
Total Income Tax Provision (Benefit)	$	(7	)	$	3	$	(28	)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The components of deferred income tax assets and liabilities are as follows at December 31 (in millions):

	2011			2010
Deferred Income Tax Assets:
Federal and State Net Operating Loss Carryforwards	$	15		$	14
Accrued Compensation	7			7
Accrued Pension Benefits	17			6
Timber and Timberlands	9			9
Accrued Workers' Compensation Benefits	4			4
Inventory Reserves and Write-downs	—			2
Other Accruals and Reserves	3			6
Valuation Allowance	(3		)	—
	52			48
Deferred Income Tax Liabilities:
Machinery and Equipment	(29		)	(31		)
	(29		)	(31		)
Deferred Income Tax Asset, net	$	23		$	17

Deferred Income Tax Asset (Liability) Classification

The net deferred income tax asset is classified on our Consolidated Balance Sheets as follows at December 31 (in millions):

	2011		2010
Current Deferred Income Tax Asset	$	6	$	7
Non Current Deferred Income Tax Asset	17		10
Deferred Income Tax Asset, net	$	23	$	17

PLUM CREEK TIMBERLANDS L P [Member]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The provision (benefit) for income taxes consists of the following for the years ended December 31 (in millions):

	2011			2010			2009
Current Income Taxes(A):
Federal	$	—		$	—		$	(14	)
State	(2		)	—			(2		)
Deferred Income Taxes:
Federal	—			3			—
State	—			—			—
Utilization of (Benefit from) Operating Loss Carryforward	(2		)	(1		)	(12		)
Change to Valuation Allowance	3			—			—
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

^(A)  Included in the current tax provision for 2009 is a $12 million tax benefit associated with the carryback of net operating losses to 2004 and 2005 as a result of the Worker, Homeownership and Business Assistance Act of 2009.

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The provision (benefit) for income taxes is reconciled as follows to the federal statutory rate for the years ended December 31 (in millions):

	2011			2010			2009
Provision for Income Taxes on Income from Continuing Operations Computed at the Federal Statutory Tax Rate of 35%	$	67		$	71		$	72
REIT Income not Subject to Federal Tax	(68		)	(64		)	(86		)
Benefit from Remeasurement of Deferred Tax Liability Due to a Change in Tax Law	—			(1		)	(3		)
Change to Valuation Allowance	3			—			—
State Income Tax Expense (Benefit), net of Federal Benefit	(1		)	—			(2		)
Reversal of Accrued Built-In Gains	—			—			(5		)
Tax Audit Settlements	1			—			—
Permanent Book-Tax Differences	(3		)	(5		)	(7		)
Provision (Benefit) for Income Taxes on Income from Continuing Operations	$	(1	)	$	1		$	(31	)

Allocation of Income Tax Benefit

Total income tax provision (benefit) was allocated as follows for the years ended December 31 (in millions):

	2011				2010			2009
Income from Continuing Operations	$	(1	)	—	$	1	—	$	(31	)
Other Comprehensive Income	(6		)	—	2		—	3
Gain on Sale of Properties	—			—	—		—	—
Additional Paid-In Capital (Share-Based Compensation)	—			—	—		—	—
Total Income Tax Provision (Benefit)	$	(7	)	—	$	3	—	$	(28	)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The components of deferred income tax assets and liabilities are as follows at December 31 (in millions): 

	2011			2010
Deferred Income Tax Assets:
Federal and State Net Operating Loss Carryforwards	$	15		$	14
Accrued Compensation	7			7
Accrued Pension Benefits	17			6
Timber and Timberlands	9			9
Accrued Workers' Compensation Benefits	4			4
Inventory Reserves and Write-downs	—			2
Other Accruals and Reserves	3			6
Valuation Allowance	(3		)	—
	52			48
Deferred Income Tax Liabilities:
Machinery and Equipment	(29		)	(31		)
	(29		)	(31		)
Deferred Income Tax Asset, net	$	23		$	17

Deferred Income Tax Asset (Liability) Classification

The net deferred income tax asset is classified on our Consolidated Balance Sheets as follows at December 31 (in millions): 

	2011		2010
Current Deferred Income Tax Asset	$	6	$	7
Non Current Deferred Income Tax Asset	17		10
Deferred Income Tax Asset, net	$	23	$	17

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Partners' Capital (PLUM CREEK TIMBERLANDS L P [Member])

12 Months Ended

Dec. 31, 2011

PLUM CREEK TIMBERLANDS L P [Member]

Partners' Capital

PARTNERS' CAPITAL

On October 1, 2008, PC Ventures I, LLC (“PC Ventures”), a 100% wholly-owned subsidiary of Plum Creek Timber Company, Inc., borrowed $783 million from an entity in which a subsidiary of the Operating Partnership has an equity interest. See Note 13 of the Notes to Consolidated Financial Statements. PC Ventures used the proceeds from the borrowing to make a $783 million capital contribution to the Operating Partnership in exchange for a Series T-1 Redeemable Preferred Limited Partnership Interest in the Operating Partnership (“Series T-1 Preferred Interest”). The Operating Partnership has no ownership interest in PC Ventures.

The Series T-1 Preferred Interest provides for a return of 7.375% per annum (approximately $58 million) on its contributed capital of $783 million. Distributions are payable on February 15th, May 15th, August 15th, and November 15th each year. The Series T-1 Preferred Interest is redeemable upon liquidation of the Operating Partnership. The Series T-1 Preferred Interest has a preference in liquidation over the Common Partnership Interests (Partners’ Capital) to the extent the Operating Partnership has available assets to distribute to the Series T-1 Preferred Interest.

Under the terms of our note agreements and line of credit (see Note 6 of the Notes to Consolidated Financial Statements), the Operating Partnership is restricted from transferring assets and funds in the form of loans, advances or cash dividends to Plum Creek Timber Company, Inc. and PC Ventures. Subject to certain restrictions, the Operating Partnership can make loans or advances to Plum Creek Timber Company, Inc. and PC Ventures. Based on these provisions, the Operating Partnership could distribute or advance the cash on its balance sheet as of December 31, 2011, or $254 million, all of which is considered unrestricted assets. At December 31, 2011, the Operating Partnership and its consolidated subsidiaries had net assets of $1,263 million of which $1,009 million was restricted from being transferred by the Operating Partnership to Plum Creek Timber Company, Inc. and PC Ventures.

As of December 31, 2011 and December 31, 2010, the undistributed earnings included in partnership capital from an entity accounted for by the equity method were $17 million and $17 million, respectively.

Comprehensive Income

Comprehensive income includes net income, actuarial gains and losses associated with our defined benefit pension plans and unrealized gains and losses on available-for-sale securities. Comprehensive income was as follows for the years ended December 31 (in millions): 

	Pretax Amount			Tax Expense (Benefit)			After-Tax Amount
December 31, 2009
Net Income before Allocation to Series T-1 Preferred Interest and Partners							$	294
Unrealized Holding Gains	$	5		$	—		5
Defined Benefit Plans:
Actuarial Gain	3			1			2
Reclassification to Net Income	7			2			5
Total Comprehensive Income							$	306
December 31, 2010
Net Income before Allocation to Series T-1 Preferred Interest and Partners							$	271
Unrealized Holding Gains	$	2		$	—		2
Defined Benefit Plans:
Actuarial Gain	6			2			4
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	279
December 31, 2011
Net Income before Allocation to Series T-1 Preferred Interest and Partners							$	251
Unrealized Holding Losses	$	(1	)	$	—		(1		)
Defined Benefit Plans:
Actuarial Gain	(31		)	(6		)	(25		)
Reclassification to Net Income	2			—			2
Total Comprehensive Income							$	227

The components of accumulated other comprehensive income, net of tax, were as follows at December 31 (in millions): 

	2011			2010
Net Unrealized Holding Gains	$	6		$	7
Defined Benefit Plans:
Net Loss	(41		)	(18		)
	$	(35	)	$	(11	)

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Share-Based Compensation Plans (Summary of Outstanding Value Management Awards) (Details) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2011
PLUM CREEK TIMBER CO INC [Member]
Unrecognized Compensation Expense	$ 17.0
PLUM CREEK TIMBERLANDS L P [Member]
Unrecognized Compensation Expense	17.0
Performance Period 2009 to 2011 [Member] | Value Management Awards [Member] | PLUM CREEK TIMBER CO INC [Member]
Outstanding Units	68,945
Fair Value	0
Unrecognized Compensation Expense	0
Maximum Award Value	13.8
Performance Period 2009 to 2011 [Member] | Value Management Awards [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Outstanding Units	68,945
Fair Value	0
Unrecognized Compensation Expense	0
Maximum Award Value	13.8
Performance Period 2010 to 2012 [Member] | Value Management Awards [Member] | PLUM CREEK TIMBER CO INC [Member]
Outstanding Units	77,340
Fair Value	3.0
Unrecognized Compensation Expense	0.9
Maximum Award Value	15.5
Performance Period 2010 to 2012 [Member] | Value Management Awards [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Outstanding Units	77,340
Fair Value	3.0
Unrecognized Compensation Expense	0.9
Maximum Award Value	15.5
Performance Period 2011 to 2013 [Member] | Value Management Awards [Member] | PLUM CREEK TIMBER CO INC [Member]
Outstanding Units	80,580
Fair Value	6.4
Unrecognized Compensation Expense	3.6
Maximum Award Value	16.1
Performance Period 2011 to 2013 [Member] | Value Management Awards [Member] | PLUM CREEK TIMBERLANDS L P [Member]
Outstanding Units	80,580
Fair Value	6.4
Unrecognized Compensation Expense	3.6
Maximum Award Value	$ 16.1