10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2015
OR
o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                                    to

Commission file number 033-43007

TERRA NITROGEN COMPANY, L.P.

(Exact name of registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation or organization)	73-1389684 (I.R.S. Employer Identification No.)
4 Parkway North, Suite 400 Deerfield, Illinois (Address of principal executive offices)	60015 (Zip Code)

Registrant's telephone number, including area code: (847) 405-2400

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. x Yes    o No

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. x Yes    o No

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. (Check one):

Large accelerated filer x Accelerated filer o Non-accelerated filer o (Do not check if a smaller reporting company) 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). o Yes    x No

At the close of business on November 4, 2015 there were 18,501,576 common units outstanding.

TERRA NITROGEN COMPANY, L.P.

TABLE OF CONTENTS

PART I—FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)
	Consolidated Balance Sheets	1
	Consolidated Statements of Operations	2
	Consolidated Statements of Partners' Capital	3
	Consolidated Statements of Cash Flows	4
	Notes to Unaudited Consolidated Financial Statements	5
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	13
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	20
Item 4.	Controls and Procedures	20
PART II—OTHER INFORMATION
Item 6.	Exhibits	22

TERRA NITROGEN COMPANY, L.P.

PART I. FINANCIAL INFORMATION

ITEM 1.    FINANCIAL STATEMENTS

CONSOLIDATED BALANCE SHEETS

	(unaudited)
	September 30, 2015		December 31, 2014
	(in millions, except for units)
ASSETS
Current assets:
Cash and cash equivalents	$	92.5	$	113.0
Due from affiliates of the General Partner	22.6		25.2
Accounts receivable	0.8		0.4
Inventories	7.9		9.6
Prepaid expenses and other current assets	—		0.3
Total current assets	123.8		148.5
Property, plant and equipment, net	310.3		259.4
Other assets	8.4		7.9
Total assets	$	442.5	$	415.8
LIABILITIES AND PARTNERS' CAPITAL
Current liabilities:
Accounts payable and accrued expenses	$	23.5	$	32.4
Due to affiliates of the General Partner	7.4		4.2
Other current liabilities	7.3		3.6
Total current liabilities	38.2		40.2
Other liabilities	9.0		0.7
Partners' capital:
Limited partners' interests, 18,501,576 Common Units authorized, issued and outstanding	314.3		302.7
Limited partners' interests, 184,072 Class B Common Units authorized, issued and outstanding	2.4		2.2
General partner's interest	78.6		70.0
Total partners' capital	395.3		374.9
Total liabilities and partners' capital	$	442.5	$	415.8

See accompanying Notes to Unaudited Consolidated Financial Statements.

1

TERRA NITROGEN COMPANY, L.P.

CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited)

	Three months ended   September 30,				Nine months ended   September 30,
	2015		2014		2015		2014
	(in millions, except per unit amounts)
Net sales:
Product sales to an affiliate of the General Partner	$	149.8	$	134.9	$	429.3	$	479.4
Other income from an affiliate of the General Partner	0.1		0.1		0.4		0.4
Other income	0.3		0.1		0.7		0.5
Total	150.2		135.1		430.4		480.3
Cost of goods sold:
Materials, supplies and services	69.5		52.6		166.9		174.6
Services provided by affiliates of the General Partner	6.6		6.4		20.7		17.9
Gross margin	74.1		76.1		242.8		287.8
Selling, general and administrative services provided by affiliates of the General Partner	3.9		4.0		11.8		11.7
Other general and administrative expenses	0.8		0.1		3.3		1.1
Net earnings	$	69.4	$	72.0	$	227.7	$	275.0
Allocation of net earnings:
General Partner	$	27.5	$	23.3	$	85.5	$	105.5
Class B Common Units	0.7		0.7		2.2		2.7
Common Units	41.2		48.0		140.0		166.8
Net earnings	$	69.4	$	72.0	$	227.7	$	275.0
Net earnings per Common Unit	$	2.23	$	2.60	$	7.57	$	9.02

See accompanying Notes to Unaudited Consolidated Financial Statements.

2

TERRA NITROGEN COMPANY, L.P.

CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL

(unaudited)

	Common Units			Class B Common Units			General Partner's Interest			Total Partners' Capital
	(in millions)
Partners' capital as of December 31, 2013	$	264.5		$	1.5		$	43.0		$	309.0
Net earnings	166.8			2.7			105.5			275.0
Distributions	(152.1		)	(2.5		)	(100.1		)	(254.7		)
Partners' capital as of September 30, 2014	$	279.2		$	1.7		$	48.4		$	329.3
Partners' capital as of December 31, 2014	$	302.7		$	2.2		$	70.0		$	374.9
Net earnings	140.0			2.2			85.5			227.7
Distributions	(128.4		)	(2.0		)	(76.9		)	(207.3		)
Partners' capital as of September 30, 2015	$	314.3		$	2.4		$	78.6		$	395.3

See accompanying Notes to Unaudited Consolidated Financial Statements.

3

TERRA NITROGEN COMPANY, L.P.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited)

	Nine months ended   September 30,
	2015			2014
	(in millions)
Operating Activities:
Net earnings	$	227.7		$	275.0
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	25.5			18.4
Unrealized loss on derivatives	11.6			4.7
Loss on disposal of property, plant and equipment	1.7			—
Changes in operating assets and liabilities:
Accounts receivable	(0.4		)	—
Inventories	1.7			(1.7		)
Accounts payable and accrued expenses	(6.0		)	(2.4		)
Due to/from affiliates of the General Partner	5.8			6.1
Other assets and liabilities	0.2			(3.3		)
Net cash provided by operating activities	267.8			296.8
Investing Activities:
Additions to property, plant and equipment	(81.9		)	(44.3		)
Proceeds from sale of property, plant and equipment	0.9			—
Net cash used in investing activities	(81.0		)	(44.3		)
Financing Activities:
Partnership distributions paid	(207.3		)	(253.0		)
Other	—			(8.0		)
Net cash used in financing activities	(207.3		)	(261.0		)
Decrease in cash and cash equivalents	(20.5		)	(8.5		)
Cash and cash equivalents at beginning of period	113.0			86.9
Cash and cash equivalents at end of period	$	92.5		$	78.4

See accompanying Notes to Unaudited Consolidated Financial Statements.

4

TERRA NITROGEN COMPANY, L.P.

Notes to Unaudited Consolidated Financial Statements

1. Background and Basis of Presentation

Terra Nitrogen Company, L.P. (TNCLP, we, our or us) is a Delaware limited partnership that produces nitrogen fertilizer products. Our principal products are anhydrous ammonia (ammonia) and urea ammonium nitrate solutions (UAN), which we manufacture at our facility in Verdigris, Oklahoma.

We conduct our operations through an operating partnership, Terra Nitrogen, Limited Partnership (TNLP or the Operating Partnership, and collectively with TNCLP, the Partnership). Terra Nitrogen GP Inc. (TNGP or the General Partner), a Delaware corporation, is the General Partner of both TNCLP and TNLP and owns a consolidated 0.05% general partner interest in the Partnership. The General Partner is an indirect, wholly-owned subsidiary of CF Industries Holdings, Inc. (CF Industries), a Delaware corporation. Ownership of TNCLP is comprised of the general partner interests and the limited partner interests. Limited partner interests are represented by common units, which are listed for trading on the New York Stock Exchange under the symbol "TNH," and Class B common units. As of September 30, 2015, we had 18,501,576 common units and 184,072 Class B common units issued and outstanding. CF Industries through its subsidiaries owned 13,889,014 common units (representing approximately 75% of the total outstanding common units) and all of the Class B common units as of September 30, 2015.

We are a master limited partnership (MLP). Partnerships are generally not subject to federal income tax, although publicly-traded partnerships (such as TNCLP) are treated as corporations for federal income tax purposes (and therefore are subject to federal income tax), unless at least 90% of the partnership's gross income is "qualifying income" as defined in Section 7704 of the Internal Revenue Code of 1986, as amended, and the partnership is not required to register as an investment company under the Investment Company Act of 1940. As we currently satisfy the requirements to be treated as a partnership for federal income tax purposes, no federal income taxes are paid by the Partnership.

On May 6, 2015, the Internal Revenue Service (IRS) published proposed regulations on the types of income and activities which constitute or generate qualifying income of MLP. The proposed regulations would have the effect of limiting the types of income and activities which qualify under the MLP rules, subject to certain transition provisions. The proposed regulations include as activities that generate qualifying income processing or refining and transportation activities with respect to any mineral or natural resource (including fertilizer), but reserve on specific proposals regarding fertilizer-related activities. Any change in the federal income tax treatment of income from fertilizer-related activities as qualifying income could have a material impact on the taxation of the Partnership and could have a material adverse impact on unitholder distributions. We continue to monitor these IRS regulatory activities.

The accompanying unaudited interim consolidated financial statements have been prepared on the same basis as our audited consolidated financial statements for the year ended December 31, 2014, in accordance with accounting principles generally accepted in the United States for interim financial reporting. In the opinion of management, these statements reflect all adjustments, consisting only of normal and recurring adjustments, that are necessary for the fair representation of the information for the periods presented. The unaudited interim consolidated financial statements included herein have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. Operating results for any period presented apply to that period only and are not necessarily indicative of results for any future period.

The preparation of the unaudited interim consolidated financial statements requires management to make use of estimates and assumptions that affect the reported amount of assets and liabilities, revenue and expenses and certain financial statement disclosures. Actual results could differ from these estimates. Significant estimates and assumptions in these unaudited interim consolidated financial statements include net realizable value of inventories, environmental remediation liabilities, environmental and litigation contingencies, useful lives of property, plant and equipment, and the assumptions used in the evaluation of potential impairment of property, plant and equipment.

The accompanying unaudited interim consolidated financial statements should be read in conjunction with our audited consolidated financial statements and related disclosures included in our 2014 Annual Report on Form 10-K filed with the SEC on February 26, 2015.

Throughout this document, the term "affiliates of the General Partner" refers to consolidated subsidiaries of CF Industries, including TNGP.

5

TERRA NITROGEN COMPANY, L.P.

2. New Accounting Standards

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers, which supersedes the revenue recognition requirements in Accounting Standards Codification (ASC) 605, Revenue Recognition. This ASU is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments. Additionally, information concerning the costs to obtain and fulfill a contract, including assets to be recognized, is to be disclosed. In August 2015, the FASB deferred the effective date of this ASU to December 15, 2017 for interim and annual reporting periods beginning after that date. Early adoption of the standard as of December 15, 2016 (for interim and annual reporting periods beginning after that date) is permitted by the FASB. We are currently evaluating the impact of the adoption of this ASU on our consolidated financial statements.

3. Agreement of Limited Partnership

We make quarterly distributions to holders of our general partner interest and limited partner interests based on Available Cash for the quarter as defined in our agreement of limited partnership. Available Cash is defined generally as all cash receipts less all cash disbursements, less certain reserves (including reserves for future operating and capital needs) established as the General Partner determines in its reasonable discretion to be necessary or appropriate. Changes in working capital affect Available Cash as changes in the amount of cash invested in working capital items (such as increases in inventory and decreases in accounts payable) reduce Available Cash, while declines in the amount of cash invested in working capital items increase Available Cash. During the nine months ended September 30, 2015, we declared and paid partnership distributions of $207.3 million. During the nine months ended September 30, 2014, we declared partnership distributions of $254.7 million, of which $253.0 million was paid as of September 30, 2014 and $1.7 million, included in the due to affiliates of the General Partner account as of September 30, 2014, was paid in the fourth quarter of 2014.

We receive 99% of the Available Cash from the Operating Partnership and 1% is distributed by the Operating Partnership to the General Partner. Cash distributions from the Operating Partnership generally represent the Operating Partnership's Available Cash from operations. Our cash distributions are made 99.975% to common and Class B common unitholders and 0.025% to the General Partner except when cumulative distributions of Available Cash exceed specified target levels above the Minimum Quarterly Distributions (MQD) of $0.605 per unit. Under such circumstances, the General Partner is entitled to receive Incentive Distribution Rights.

On November 4, 2015, we announced a $2.81 cash distribution per common limited partnership unit, payable on November 30, 2015 to holders of record as of November 16, 2015. In the third quarter of 2015, we exceeded the cumulative MQD amounts and will distribute Available Cash as summarized in the following table:

	Income and Distribution Allocation
	Target Limit		Target Increment		Common Units		Class B Common Units		General Partner		Total
Minimum Quarterly Distributions	$	0.605	$	0.605	98.990	%	0.985	%	0.025	%	100.00	%
First Target	0.715		0.110		98.990	%	0.985	%	0.025	%	100.00	%
Second Target	0.825		0.110		85.859	%	0.985	%	13.156	%	100.00	%
Third Target	1.045		0.220		75.758	%	0.985	%	23.257	%	100.00	%
Final Target and Beyond	>1.045		—		50.505	%	0.985	%	48.510	%	100.00	%

The General Partner is required to remit the majority of cash distributions it receives from the Partnership, in excess of its 1% Partnership equity interest, to an affiliated company.

As of September 30, 2015, the General Partner and its affiliates owned 75.3% of our outstanding units. When not more than 25% of our issued and outstanding units are held by non-affiliates of the General Partner, as was the case at September 30, 2015, we, at the General Partner's sole discretion, may call, or assign to the General Partner or its affiliates, our right to acquire all, but not less than all, such outstanding units held by non-affiliated persons. If the General Partner elects to acquire all outstanding units, we are required to give at least 30 but not more than 60 days' notice of our decision to purchase the outstanding units. The purchase price per unit will be the greater of (1) the average of the previous 20 trading days' closing prices as of the date five days before the purchase is announced or (2) the highest price paid by the General Partner or any of its affiliates for any unit within the 90 days preceding the date the purchase is announced.

6

TERRA NITROGEN COMPANY, L.P.

4. Net Earnings per Common Unit

Net earnings per common unit are based on the weighted-average number of common units outstanding during the period. The following table provides a calculation for net earnings per common unit for the three and nine months ended September 30, 2015 and 2014:

	Three months ended   September 30,				Nine months ended   September 30,
	2015		2014		2015		2014
	(in millions, except per unit amounts)
Basic earnings per Common Unit:
Net earnings	$	69.4	$	72.0	$	227.7	$	275.0
Less: Net earnings allocable to General Partner	27.5		23.3		85.5		105.5
Less: Net earnings allocable to Class B Common Units	0.7		0.7		2.2		2.7
Net earnings allocable to Common Units	$	41.2	$	48.0	$	140.0	$	166.8
Weighted-average Common Units outstanding	18.5		18.5		18.5		18.5
Net earnings per Common Unit	$	2.23	$	2.60	$	7.57	$	9.02

There were no dilutive TNCLP units outstanding for the three and nine months ended September 30, 2015 and 2014.

5. Inventories

Inventories consisted of the following:

	September 30, 2015		December 31, 2014
	(in millions)
Finished goods	$	4.5	$	7.8
Materials and supplies	3.4		1.8
Total	$	7.9	$	9.6

7

TERRA NITROGEN COMPANY, L.P.

6. Derivative Financial Instruments

Derivative financial instruments are executed on our behalf by an affiliate of the General Partner to reduce our exposure to changes in commodity prices for natural gas. Natural gas is the largest and most volatile component of the manufacturing cost for nitrogen-based fertilizers.

The derivatives that we use are primarily natural gas fixed price swaps and options traded in the over-the-counter (OTC) markets. The derivative contract prices are based on NYMEX future prices based on physical delivery of natural gas at the Henry Hub in Louisiana, the most common and financially-liquid location of reference for derivative financial instruments related to natural gas. However, we purchase natural gas for our manufacturing facility from suppliers whose prices are based primarily on the ONEOK index (based on physical delivery of natural gas in Oklahoma, rather than at the Henry Hub). This creates a location basis differential between the derivative contract price and the price we pay for physical delivery of natural gas. Accordingly, the prices underlying the derivative financial instruments we use may not exactly match the prices of natural gas we purchase and consume. These natural gas derivative contracts are scheduled to coincide with our anticipated purchases of natural gas used to manufacture nitrogen products during those future periods. We use natural gas derivatives as an economic hedge of gas price risk, but without the application of hedge accounting.

We report derivatives on our consolidated balance sheets at fair value. Changes in fair value are recognized in cost of goods sold in the period of change. Cash flows related to natural gas derivatives are classified as operating activities.

The gross fair values of derivatives on our consolidated balance sheets are shown below. All balance sheet amounts from derivatives arise from natural gas derivatives that are not designated as hedging instruments. For additional information on derivative fair values, see Note 7—Fair Value Measurements.

	September 30, 2015			December 31, 2014
	(in millions)
Derivative Assets
Unrealized gains in other current assets	$	—		$	0.1
Unrealized gains in other assets	0.3			—
Total derivative assets	0.3			0.1
Derivative Liabilities
Unrealized losses in other current liabilities	(7.3		)	(3.6		)
Unrealized losses in other liabilities	(8.2		)	—
Total derivative liabilities	(15.5		)	(3.6		)
Net derivative liabilities	$	(15.2	)	$	(3.5	)

The effect of derivatives in our consolidated statements of operations is shown below. All amounts arise from natural gas derivatives that are not designated as hedging instruments and are recorded in cost of goods sold.

	Three months ended   September 30,						Nine months ended   September 30,
	2015			2014			2015			2014
	(in millions)
Unrealized mark-to-market (losses) gains	$	(17.0	)	$	1.8		$	(10.5	)	$	(7.1	)
Realized (losses) gains	(0.5		)	(3.6		)	(5.9		)	11.2
Net derivative (losses) gains	$	(17.5	)	$	(1.8	)	$	(16.4	)	$	4.1

As of September 30, 2015 and December 31, 2014, we had open derivative contracts for 67.2 million MMBtus and 7.6 million MMBtus, respectively, of natural gas. The derivative portfolio at September 30, 2015 includes natural gas derivatives that hedge a portion of the remainder of 2015, and a portion of 2016, 2017 and 2018 natural gas purchases. For the nine months ended September 30, 2015, we used derivatives to cover approximately 63% of our natural gas consumption.

8

TERRA NITROGEN COMPANY, L.P.

As of September 30, 2015 and December 31, 2014, the aggregate fair value of derivative instruments with credit-risk-related contingent features in a net liability position of $15.5 million and $3.6 million, respectively, which also approximates the fair value of the maximum amount of additional collateral that would need to be posted or assets needed to settle the obligations if the credit-risk-related contingent features were triggered at the reporting dates. At both September 30, 2015 and December 31, 2014, we had no cash collateral on deposit with counterparties for derivative contracts. The credit support documents executed in connection with International Swaps and Derivatives Association (ISDA) agreements generally provide the right to set off collateral against amounts owing under the ISDA agreements upon the occurrence of a default or a specified termination event.

The following table presents amounts relevant to offsetting of our derivative assets and liabilities as of September 30, 2015 and December 31, 2014:

	Gross and net amounts presented in consolidated balance sheets(1)			Gross amounts not offset in consolidated balance sheets
				Financial instruments			Cash collateral received (pledged)		Net amount
	(in millions)
September 30, 2015
Total derivative assets	$	0.3		$	0.3		$	—	$	—
Total derivative liabilities	(15.5		)	(0.3		)	—		(15.2		)
Net derivative liabilities	$	(15.2	)	$	—		$	—	$	(15.2	)
December 31, 2014
Total derivative assets	$	0.1		$	0.1		$	—	$	—
Total derivative liabilities	(3.6		)	(0.1		)	—		(3.5		)
Net derivative liabilities	$	(3.5	)	$	—		$	—	$	(3.5	)

_______________________________________________________________________________

⁽¹⁾  We report the fair values of our derivative assets and liabilities on a gross basis on our consolidated balance sheets. As a result, amounts recognized and net amounts presented are the same.

9

TERRA NITROGEN COMPANY, L.P.

7. Fair Value Measurements

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents assets and liabilities included in our consolidated balance sheets that are recognized at fair value on a recurring basis, and indicates the fair value hierarchy utilized to determine such fair value as of September 30, 2015 and December 31, 2014.

	Balances as of September 30, 2015
	Total			Quoted Market Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Cash and cash equivalents	$	92.5		$	92.5	$	—		$	—
Unrealized gains on natural gas derivatives	0.3			—		0.3			—
Total assets at fair value	$	92.8		$	92.5	$	0.3		$	—
Unrealized losses on natural gas derivatives	$	(15.5	)	$	—	$	(15.5	)	$	—
Total liabilities at fair value	$	(15.5	)	$	—	$	(15.5	)	$	—

	Balances as of December 31, 2014
	Total			Quoted Market Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Cash and cash equivalents	$	113.0		$	113.0	$	—		$	—
Unrealized gains on natural gas derivatives	0.1			—		0.1			—
Total assets at fair value	$	113.1		$	113.0	$	0.1		$	—
Unrealized losses on natural gas derivatives	$	(3.6	)	$	—	$	(3.6	)	$	—
Total liabilities at fair value	$	(3.6	)	$	—	$	(3.6	)	$	—

Cash and Cash Equivalents

As of September 30, 2015 and December 31, 2014, our cash and cash equivalents consisted primarily of money market mutual funds that invest in U.S. government obligations.

Natural Gas Derivatives

The derivative instruments that we use are primarily natural gas fixed price swaps and options traded in the OTC markets with multi-national commercial banks, other major financial institutions and large energy companies. The derivatives are traded in months forward and settlements are scheduled to coincide with anticipated gas purchases during those future periods. These contracts settle using NYMEX futures prices and accordingly, to determine the fair value of these instruments, we use quoted market prices from NYMEX and standard pricing models with inputs derived from or corroborated by observable market data such as forward curves supplied by an industry-recognized unrelated third party. See Note 6—Derivative Financial Instruments for additional information.

10

TERRA NITROGEN COMPANY, L.P.

8. Property, Plant and Equipment, Net

Property, plant and equipment, net consisted of the following:

	September 30, 2015		December 31, 2014
	(in millions)
Land	$	1.6	$	1.6
Buildings and improvements	14.6		8.1
Machinery and equipment	539.4		401.4
Construction in progress	12.3		109.2
	567.9		520.3
Less: Accumulated depreciation and amortization	257.6		260.9
	$	310.3	$	259.4

During the three and nine months ended September 30, 2015, we recorded losses of approximately $0.5 million and $1.7 million, respectively, on the disposal of certain machinery and equipment, which is included in other general and administrative expenses on our consolidated statements of operations.

Plant turnarounds—Scheduled inspections, replacements and overhauls of machinery and equipment at our continuous process manufacturing facility are referred to as plant turnarounds. The expenditures related to turnarounds are capitalized in property, plant and equipment when incurred. The following is a summary of plant turnaround activity:

	Nine months ended   September 30,
	2015			2014
	(in millions)
Net capitalized turnaround costs:
Beginning balance	$	16.7		$	22.7
Additions	33.1			0.3
Depreciation	(8.5		)	(4.7		)
Ending balance	$	41.3		$	18.3

Scheduled replacements and overhauls of machinery and equipment include the dismantling, repair or replacement and installation of various components including piping, valves, motors, turbines, pumps, compressors, heat exchangers and the replacement of catalyst when a full plant shutdown occurs. Scheduled inspections are also conducted during full plant shutdowns, including required safety inspections which entail the disassembly of various components such as steam boilers, pressure vessels and other equipment requiring safety certifications. Internal employee costs and overhead are not considered turnaround costs and are not capitalized.

9. Related Party Transactions

TNCLP and TNGP have no employees. We have entered into several agreements with a subsidiary of CF Industries relating to the operation of our business and the sale of the fertilizer products produced at our Verdigris facility. We believe that each of these agreements is on terms that are fair and reasonable to us.

General and Administrative Services and Product Offtake Agreement

Pursuant to the Amendment to the General and Administrative Services and Product Offtake Agreement (the Services and Offtake Agreement), the Partnership sells all of its fertilizer products to an affiliate of the General Partner at prices based on market prices for the Partnership's fertilizer products as defined in the Services and Offtake Agreement. Title and risk of loss transfer to an affiliate of the General Partner as the product is shipped from the plant gate. The Services and Offtake Agreement is effective for annual terms starting as of January 1st and will be extended automatically for successive one-year terms unless terminated by one of the parties prior to renewal.

11

TERRA NITROGEN COMPANY, L.P.

Directly Incurred Charges

Since we have no employees, we rely on employees from an affiliate of the General Partner to operate our Verdigris facility. As a result, the payroll and payroll-related expenses and benefit costs, such as health insurance and pension costs, are incurred by an affiliate of the General Partner and directly charged to us. Payroll, payroll-related expenses and other employee-related benefit costs directly charged to us for the three and nine months ended September 30, 2015 were $6.6 million and $20.7 million, respectively, and for the three and nine months ended September 30, 2014 were $6.4 million and $17.9 million, respectively. We report these expenses as services provided by affiliates of the General Partner in cost of goods sold.

Allocated Charges

CF Industries, together with its affiliates, also provides certain services to us under the Services and Offtake Agreement. These services include production planning, manufacturing management, logistics, procurement, accounting, legal, risk management, investor relations and other general and administrative functions. Allocated expenses charged to us for the three and nine months ended September 30, 2015 were $3.9 million and $11.8 million, respectively, and for the three and nine months ended September 30, 2014 were $4.0 million and $11.7 million, respectively. We report these expenses as selling, general and administrative services provided by affiliates of the General Partner.

Amounts Due to/from Affiliates of the General Partner

We receive cash and make expenditures directly from our cash accounts. Because we sell our products to and receive payroll and other related services from affiliates of the General Partner, the affiliates of the General Partner continue to be both debtors and creditors to us. As of September 30, 2015 and December 31, 2014, we had a net balance due from affiliates of the General Partner of $15.2 million and $21.0 million, respectively.

Spare Parts Sharing Agreement

Affiliates of CF Industries own and operate nitrogen fertilizer complexes that utilize some equipment that is similar to equipment at our Verdigris nitrogen complex. Each of the various manufacturing complexes maintains spare parts for use in its facilities. In the event that an unplanned need arises and to help minimize manufacturing downtime, we have entered into a spare parts sharing agreement that permits spare parts to be shared among the manufacturing complexes from time to time. Parts that are borrowed from another complex under the agreement are either refurbished and returned to the lender or replaced.

Leases

We entered into an amended and restated lease with an affiliate of the General Partner under which the ammonia assets in our terminal in Blair, Nebraska are leased by the affiliate. The lease is effective for a five-year term ending on December 31, 2018, and the affiliate of the General Partner has options to renew for three additional five-year terms. The quarterly lease payment is $100,000, subject to an annual inflation adjustment, and additional rent will be paid equal to all costs, expenses, and obligations incurred by the affiliate of the General Partner related to the use, occupancy and operation of the terminal.

We also have leased certain of our rail cars to an affiliate of the General Partner for quarterly market-based rental payments of $3,600 per car. This lease was effective initially for a one-year term and is extended automatically for successive one-year terms unless terminated by either party thereto prior to renewal.

We recognized rental income for the three and nine months ended September 30, 2015 and 2014 of $0.1 million and $0.4 million, respectively.

12

TERRA NITROGEN COMPANY, L.P.

ITEM 2.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Overview

You should read the following discussion and analysis in conjunction with Terra Nitrogen Company, L.P.'s (TNCLP, we, our or us) annual consolidated financial statements and related notes, which are included in our 2014 Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC) on February 26, 2015, as well as our Unaudited Consolidated Financial Statements and the related Notes thereto contained in Part I, Item 1 of this report.

The section entitled "Risk Factors" contained in Item 1A of our Annual Report on Form 10-K filed with the SEC on February 26, 2015, and similar discussions in our other SEC filings, describe some of the important risk factors that may affect our business, financial condition, results of operations and/or liquidity. You should read and consider carefully those risks, in addition to the other information in this report and in our other filings with the SEC.

We conduct our operations through an operating partnership, Terra Nitrogen, Limited Partnership (TNLP or the Operating Partnership, and collectively with TNCLP, the Partnership). Terra Nitrogen GP Inc. (TNGP or the General Partner), a Delaware corporation, is the General Partner of both TNCLP and TNLP and owns a consolidated 0.05% general partner interest in the Partnership. The General Partner is an indirect, wholly-owned subsidiary of CF Industries Holdings, Inc. (CF Industries), a Delaware corporation.

CF Industries, through its subsidiaries, is a global leader in nitrogen fertilizer manufacturing and distribution, serving both agricultural and industrial customers. CF Industries operates world-class nitrogen fertilizer manufacturing complexes in the central United States and Canada and distributes nitrogen fertilizer products through a system of terminals, warehouses, and associated transportation equipment located primarily in the midwestern United States.

Throughout this document, the term "affiliates of the General Partner" refers to consolidated subsidiaries of CF Industries, including TNGP.

Dependence on CF Industries

We are dependent on CF Industries for our success in a number of respects. An affiliate of CF Industries is obligated to take all of the production from our Verdigris manufacturing complex. Affiliates of CF Industries provide certain services to us, including production planning, manufacturing management, logistics, procurement, accounting, legal, risk management, investor relations and other general and administrative services. For additional information concerning CF Industries, refer to CF Industries' filings with the SEC on Form 10-K, Form 10-Q and current reports on Form 8-K, and for further information regarding transactions with CF Industries, please refer to Notes to Unaudited Consolidated Financial Statements, Note 9—Related Party Transactions.

Introduction

In this discussion and analysis, we explain our business in the following areas:

• Company Overview;

• Results of Operations; and

• Liquidity and Capital Resources

Company Overview

TNCLP is a Delaware limited partnership that produces nitrogen fertilizer products. Our principal products are anhydrous ammonia (ammonia) and urea ammonium nitrate solutions (UAN), which we manufacture at our facility in Verdigris, Oklahoma.

TNCLP and TNGP have no employees. An affiliate of the General Partner provides certain services to us under the Amendment to the General and Administrative Services and Product Offtake Agreement (the Services and Offtake Agreement). Pursuant to the Services and Offtake Agreement, the Partnership sells all of its fertilizer products to an affiliate of the General Partner at prices based on market prices for the Partnership's fertilizer products as defined in the Services and Offtake Agreement. Title and risk of loss transfer to an affiliate of the General Partner as the product is shipped from the plant gate. For further information regarding our agreements with the General Partner, see Notes to Unaudited Consolidated Financial Statements, Note 9—Related Party Transactions.

13

TERRA NITROGEN COMPANY, L.P.

Results of Operations

Consolidated Results

We reported net earnings of $69.4 million for the three months ended September 30, 2015 on net sales of $150.2 million, compared with net earnings of $72.0 million for the three months ended September 30, 2014 on net sales of $135.1 million. Net earnings per common unit for the three months ended September 30, 2015, were $2.23 compared with $2.60 for the three months ended September 30, 2014.

We reported net earnings of $227.7 million for the nine months ended September 30, 2015 on net sales of $430.4 million, compared with net earnings of $275.0 million for the nine months ended September 30, 2014 on net sales of $480.3 million. Net earnings per common unit for the nine months ended September 30, 2015, were $7.57 compared with $9.02 for the nine months ended September 30, 2014.

The following table shows our results of operations for the three and nine months ended September 30, 2015 and 2014:

	Three months ended September 30,											Nine months ended September 30,
	2015			2014			2015 vs. 2014					2015			2014			2015 vs. 2014
	(in millions, except as noted)
Net sales	$	150.2		$	135.1		$	15.1		11	%	$	430.4		$	480.3		$	(49.9	)	(10	)%
Cost of goods sold	76.1			59.0			17.1			29	%	187.6			192.5			(4.9		)	(3	)%
Gross margin	74.1			76.1			(2.0		)	(3	)%	242.8			287.8			(45.0		)	(16	)%
Gross margin percentage	49.3		%	56.3		%	(7.0		)%			56.4		%	59.9		%	(3.5		)%
Selling, general and administrative expenses	4.7			4.1			0.6			15	%	15.1			12.8			2.3			18	%
Net earnings	$	69.4		$	72.0		$	(2.6	)	(4	)%	$	227.7		$	275.0		$	(47.3	)	(17	)%
Net earnings allocable to Common Units	$	41.2		$	48.0		$	(6.8	)	(14	)%	$	140.0		$	166.8		$	(26.8	)	(16	)%
Net earnings per Common Unit	$	2.23		$	2.60		$	(0.37	)	(14	)%	$	7.57		$	9.02		$	(1.45	)	(16	)%
Sales volume (tons in thousands):
Ammonia	75			69			6			9	%	296			238			58			24	%
UAN(1)	544			427			117			27	%	1,207			1,427			(220		)	(15	)%
Total	619			496			123			25	%	1,503			1,665			(162		)	(10	)%
Average selling prices (dollars per ton):
Ammonia	$	459		$	445		$	14		3	%	$	492		$	445		$	47		11	%
UAN(1)	$	211		$	242		$	(31	)	(13	)%	$	234		$	261		$	(27	)	(10	)%
Natural gas costs:
Purchased natural gas costs (per MMBtu)(2)	$	2.57		$	3.92		$	(1.35	)	(34	)%	$	2.61		$	4.43		$	(1.82	)	(41	)%
Realized derivatives loss (gain) (per MMBtu)(3)	0.05			0.37			(0.32		)	(86	)%	0.21			(0.37		)	0.58			N/M
Natural gas costs (per MMBtu)	$	2.62		$	4.29		$	(1.67	)	(39	)%	$	2.82		$	4.06		$	(1.24	)	(31	)%
Production volume by product (tons in thousands):
Ammonia(4)	304			253			51			20	%	785			832			(47		)	(6	)%
UAN(1)	513			410			103			25	%	1,194			1,412			(218		)	(15	)%

_______________________________________________________________________________

N/M - Not Meaningful

⁽¹⁾  The nitrogen content of UAN is 32% by weight.

⁽²⁾  Includes the cost of natural gas purchased during the period for use in production.

⁽³⁾  Includes realized gains and losses on natural gas derivatives settled during the period. Excludes unrealized mark-to-market gains and losses on natural gas derivatives.

⁽⁴⁾  Gross ammonia production, including amounts subsequently upgraded on-site into UAN.

14

TERRA NITROGEN COMPANY, L.P.

Third Quarter of 2015 Compared to the Third Quarter of 2014

Our net sales for the third quarter of 2015 were $150.2 million, an increase of $15.1 million, or 11%, from the third quarter of 2014 net sales of $135.1 million. The increase is primarily due to higher sales volume for both UAN and ammonia from higher production in the third quarter of 2015 versus the third quarter of 2014. An unplanned production outage limited overall production in the third quarter of 2014.

Ammonia sales volume increased from 69,000 tons in the third quarter of 2014 to 75,000 tons in the third quarter of 2015, due to higher production levels. Ammonia selling prices increased by 3% from the third quarter of 2014 to $459 per ton in the third quarter of 2015 due to tighter supply conditions in the Western Cornbelt.

UAN sales volume increased by 27% in the third quarter of 2015 to 544,000 tons from 427,000 tons in the third quarter of 2014 due to higher production levels. UAN selling prices declined by 13% from the third quarter of 2014 to $211 per ton in the third quarter of 2015 due to excess supply availability including imports which weighed on selling prices.

The following table shows the components of cost of goods sold and the average cost of goods sold per ton for the three months ended September 30, 2015 and 2014:

	Three months ended September 30,
	2015		2014			2015 vs. 2014
	(in millions, except per ton amounts)
Realized natural gas costs	$	28.4	$	40.1		$	(11.7	)	(29	)%
Unrealized mark-to-market loss (gain) on natural gas derivatives	17.0		(1.8		)	18.8			N/M
Payroll-related expenses	6.6		6.4			0.2			3	%
Other	24.1		14.3			9.8			69	%
Total cost of goods sold	$	76.1	$	59.0		$	17.1		29	%
Average cost of goods sold per ton	$	123	$	119		$	4		3	%

_________________________________________________________________________

N/M - Not Meaningful

The average cost of goods sold increased to $123 per ton in the third quarter of 2015 from $119 per ton in the third quarter of 2014. The 3%increase in the average cost of goods sold per ton was due primarily to the effect of an unrealized net mark-to-market loss on natural gas derivatives and higher depreciation expense due to the earlier completed turnaround, partially offset by lower realized natural gas prices. Realized natural gas costs decreased $1.67 per MMBtu from $4.29 per MMBtu in the third quarter of 2014 to $2.62 per MMBtu in the third quarter of 2015. We recorded a $17.0 million unrealized net mark-to-market loss on natural gas derivatives for the third quarter of 2015, compared to a $1.8 million unrealized net mark-to-market gain for the third quarter of 2014. The derivative portfolio at September 30, 2015 includes natural gas derivatives that hedge a portion of the remainder of 2015, and a portion of 2016, 2017 and 2018 natural gas purchases.

Our gross margin was $74.1 million in the third quarter of 2015 compared to $76.1 million in the third quarter of 2014. The gross margin in the third quarter of 2015declined slightly from the same quarter of 2014 primarily due to the impact of an unrealized mark-to-market loss on natural gas derivatives and lower UAN average selling prices, partially offset by higher UAN sales volume, higher ammonia sales volume and ammonia selling prices and lower realized natural gas costs. Gross margin as a percentage of net sales decreased to 49.3% during the third quarter of 2015 from 56.3% during the third quarter of 2014.

Total selling, general and administrative expenses, including other general and administrative expenses, were $4.7 million in the third quarter of 2015 compared to $4.1 million in the third quarter of 2014.

Our net earnings were $69.4 million in the third quarter of 2015, a decrease of $2.6 million, or 4%, as compared to $72.0 million in the third quarter of 2014.

15

TERRA NITROGEN COMPANY, L.P.

Nine Months Ended September 30, 2015 Compared to Nine Months Ended September 30, 2014

We commenced a planned turnaround of an ammonia plant and a UAN plant in the first quarter of 2015, together representing approximately one-half of the production capacity of the Verdigris nitrogen complex. The ammonia plant turnaround was completed in the first quarter of 2015 and the UAN plant turnaround, including certain follow-on maintenance, was completed in the second quarter of 2015. These turnarounds reduced production in the nine months ended September 30, 2015.

Our net sales for the nine months ended September 30, 2015 were $430.4 million, a decrease of $49.9 million, or 10%, from net sales of $480.3 million for the nine months ended September 30, 2014. This decrease was due primarily to a decrease in UAN sales volume attributable to lower production as a result of the turnarounds and a decrease in UAN average selling price, partially offset by higher ammonia sales volume and ammonia selling prices.

Ammonia selling prices increased by 11% from the nine months ended September 30, 2014 to $492 per ton in the nine months ended September 30, 2015. The increase in ammonia selling prices was due to a tighter U.S. producer inventory position as we entered 2015. Ammonia sales volume increased from 238,000 tons in the nine months ended September 30, 2014 to 296,000 tons in the nine months ended September 30, 2015 as a result of the impact of the turnaround of the UAN plant which increased the amount of ammonia available for sale. Additionally, an early spring application window, together with customer preferences for ammonia contributed to the increase.

UAN selling prices declined by 10% to $234 per ton in the nine months ended September 30, 2015. UAN sales volume decreased by 15% in the nine months ended September 30, 2015 to 1,207,000 tons from 1,427,000 tons in the nine months ended September 30, 2014 due to the impact of the turnarounds in the first half of 2015.

The following table shows the components of cost of goods sold and the average cost of goods sold per ton for the nine months ended September 30, 2015 and 2014:    

	Nine months ended September 30,
	2015		2014		2015 vs. 2014
	(in millions, except per ton amounts)
Realized natural gas costs	$	79.6	$	121.6	$	(42.0	)	(35	)%
Unrealized mark-to-market losses on natural gas derivatives	10.5		7.1		3.4			48	%
Payroll-related expenses	20.7		17.9		2.8			16	%
Other	76.8		45.9		30.9			67	%
Total cost of goods sold	$	187.6	$	192.5	$	(4.9	)	(3	)%
Average cost of goods sold per ton	$	125	$	116	$	9		8	%

The average cost of goods sold per ton increased to $125 per ton in the nine months ended September 30, 2015 from $116 per ton in the nine months ended September 30, 2014. The 8%increase in the average cost of goods sold per ton was due primarily to lower production levels due to the turnarounds, the impact of higher payroll-related expenses for employees working on turnaround activities and certain items in the Other category in the table above, such as higher maintenance costs and higher depreciation as a result of the turnaround in the first quarter of 2015. These items were partially offset by lower natural gas costs. Overall, cost of goods sold decreased by 3% from the nine months ended September 30, 2014 to $187.6 million in the nine months ended September 30, 2015 due primarily to lower UAN sales volume and lower natural gas prices. Realized natural gas costs decreased $1.24 per MMBtu from $4.06 per MMBtu in the nine months ended September 30, 2014 to $2.82 per MMBtu in the nine months ended September 30, 2015. We recorded a $10.5 million unrealized net mark-to-market loss on natural gas derivatives for the nine months ended September 30, 2015, compared to a $7.1 million unrealized net mark-to-market loss for the nine months ended September 30, 2014.

Our gross margin was $242.8 million in the nine months ended September 30, 2015 compared to $287.8 million in the nine months ended September 30, 2014. The gross margin in the nine months ended September 30, 2015declined16% from the nine months ended September 30, 2014 primarily due to lower UAN sales volume as a result of reduced production due to the turnaround activities. Gross margin as a percentage of net sales decreased to 56.4% during the nine months ended September 30, 2015 from 59.9% during the nine months ended September 30, 2014.

Total selling, general and administrative expenses, including other general and administrative expenses, were $15.1 million in the nine months ended September 30, 2015 compared to $12.8 million in the nine months ended September 30, 2014 due primarily to a loss on the disposal of certain machinery and equipment during the nine months ended September 30, 2015.

16

TERRA NITROGEN COMPANY, L.P.

Our net earnings were $227.7 million in the nine months ended September 30, 2015, a decrease of $47.3 million, or 17%, as compared to $275.0 million in the nine months ended September 30, 2014. Net earnings decreased primarily due to the lower gross margin.

Liquidity and Capital Resources

Our principal funding needs and uses of cash are working capital, plant turnaround costs, capital expenditures, and quarterly distributions. Our cash and cash equivalents balance as of September 30, 2015 was $92.5 million, a decrease of $20.5 million from $113.0 million as of December 31, 2014. See further discussion below under "Cash Flows." Our cash and cash equivalents consist primarily of money market mutual funds that invest in U.S. government obligations.

Because we sell our products to, and receive payroll and other related services from, affiliates of the General Partner, the affiliates of the General Partner continue to be both debtors and creditors to us.

Cash Flows

The following table summarizes our cash flows from operating, investing and financing activities for the nine months ended September 30, 2015 and 2014:

	Nine months ended   September 30,
	2015			2014
	(in millions)
Total cash provided by (used in):
Operating activities	$	267.8		$	296.8
Investing activities	(81.0		)	(44.3		)
Financing activities	(207.3		)	(261.0		)
Decrease in cash and cash equivalents	$	(20.5	)	$	(8.5	)

Operating Activities

Net cash provided by operating activities was $267.8 million for the first nine months of 2015 compared to $296.8 million for the same period of 2014. The $29.0 milliondecrease was due primarily to the $47.3 milliondecrease in net earnings. Net earnings included depreciation and amortization expense of $25.5 million and $18.4 million during the nine months ended September 30, 2015 and 2014, respectively, and unrealized net mark-to-market losses on derivatives of $11.6 million and $4.7 million, respectively.

Investing Activities

Net cash used in investing activities was $81.0 million for the first nine months of 2015 compared to $44.3 million in the first nine months of 2014. The $36.7 million increase in cash used in investing activities in 2015 was due primarily to higher capital expenditures in the first nine months of 2015 due to the plant turnarounds.

Financing Activities

Net cash used in financing activities was $207.3 million for the first nine months of 2015 compared to $261.0 million in the first nine months of 2014, and primarily consists of distributions paid to our unitholders. The distributions paid are based on "Available Cash," as defined in our agreement of limited partnership. See further discussion below under "Partnership Distributions."

Capital Expenditures

Capital expenditures totaled $81.9 million during the nine months ended September 30, 2015 as compared to $44.3 million during the nine months ended September 30, 2014, with the increase primarily resulting from the completed turnarounds. We expect to make capital expenditures in the range of $85 million to $95 million in 2015. Capital expenditures are made to sustain our asset base, to increase capacity, to improve plant efficiency and to comply with various environmental, health and safety requirements. Due to the size, scope and timing of capital projects, certain projects require more than a year to complete. Planned capital expenditures and turnarounds are subject to change due to delays in regulatory approvals and/or permitting, unanticipated increases in cost, changes in scope and completion time, performance of third parties, adverse weather, defects in materials and workmanship, labor or material shortages, transportation constraints, and other unforeseen difficulties. Capital expenditures reduce the Available Cash for unitholder distributions.

17

TERRA NITROGEN COMPANY, L.P.

General Partner

The General Partner is an indirect, wholly-owned subsidiary of CF Industries. Under the General Partner's governing documents, neither we nor the General Partner may make any bankruptcy filing (or take similar action) without the approval of the General Partner's independent directors, except in specified circumstances if there are not two independent directors on the General Partner's board of directors.

Partnership Distributions

We make quarterly distributions to holders of our general partner interest and limited partner interests based on Available Cash for the quarter as defined in our agreement of limited partnership. Available Cash is defined generally as all cash receipts less all cash disbursements, less certain reserves (including reserves for future operating and capital needs) established as the General Partner determines in its reasonable discretion to be necessary or appropriate. Changes in working capital affect Available Cash, as changes in the amount of cash invested in working capital items (such as increases in inventory and decreases in accounts payable) reduce Available Cash, while declines in the amount of cash invested in working capital items increase Available Cash. During the nine months ended September 30, 2015, we declared and paid partnership distributions of $207.3 million. During the nine months ended September 30, 2014, we declared partnership distributions of $254.7 million, of which $253.0 million was paid as of September 30, 2014 and $1.7 million, included in the due to affiliates of the General Partner account as of September 30, 2014, was paid in the fourth quarter of 2014.

We receive 99% of the Available Cash from the Operating Partnership and 1% is distributed by the Operating Partnership to the General Partner. Cash distributions from the Operating Partnership generally represent the Operating Partnership's Available Cash from operations. Our cash distributions are made 99.975% to common and Class B common unitholders and 0.025% to the General Partner except when cumulative distributions of Available Cash exceed specified target levels above the Minimum Quarterly Distributions (MQD) of $0.605 per unit. Under such circumstances, the General Partner is entitled to receive Incentive Distribution Rights.

On November 4, 2015, we announced a $2.81 cash distribution per common limited partnership unit, payable on November 30, 2015 to holders of record as of November 16, 2015. In the third quarter of 2015, we exceeded the cumulative MQD amounts and will distribute Available Cash as summarized in the following table:

	Income and Distribution Allocation
	Target Limit		Target Increment		Common Units		Class B Common Units		General Partner		Total
Minimum Quarterly Distributions	$	0.605	$	0.605	98.990	%	0.985	%	0.025	%	100.00	%
First Target	0.715		0.110		98.990	%	0.985	%	0.025	%	100.00	%
Second Target	0.825		0.110		85.859	%	0.985	%	13.156	%	100.00	%
Third Target	1.045		0.220		75.758	%	0.985	%	23.257	%	100.00	%
Final Target and Beyond	>1.045		—		50.505	%	0.985	%	48.510	%	100.00	%

The General Partner is required to remit the majority of cash distributions it receives from the Partnership, in excess of its 1% Partnership equity interest, to an affiliated company.

General Partner Option to Effect Mandatory Redemption of Partnership Units

At September 30, 2015, the General Partner and its affiliates owned 75.3% of our outstanding units. When not more than 25% of our issued and outstanding units are held by non-affiliates of the General Partner, as was the case at September 30, 2015, we, at the General Partner's sole discretion, may call or assign to the General Partner or its affiliates, our right to acquire all, but not less than all, such outstanding units held by non-affiliated persons. If the General Partner elects to acquire all outstanding units, we are required to give at least 30 but not more than 60 days' notice of our decision to purchase the outstanding units. The purchase price per unit will be the greater of (1) the average of the previous 20 trading days' closing prices as of the date five days before the purchase is announced or (2) the highest price paid by the General Partner or any of its affiliates for any unit within the 90 days preceding the date the purchase is announced.

Derivatives

We purchase natural gas at market prices to meet production requirements at our manufacturing facility. Natural gas prices are volatile, and our natural gas acquisition policy allows us to establish derivative positions that are associated with

18

TERRA NITROGEN COMPANY, L.P.

anticipated natural gas requirements. The derivatives that we use are primarily natural gas fixed price swaps and options traded in the over-the-counter markets.

Natural gas derivatives involve the risk of dealing with counterparties and their ability to meet the terms of the contracts. The counterparties to our natural gas derivatives are multi-national commercial banks, other major financial institutions and large energy companies. For derivatives that are in net asset positions, we are exposed to credit loss from nonperformance by the counterparties. Credit risk is controlled through the use of multiple counterparties, credit limits, credit monitoring procedures, cash collateral requirements and master netting arrangements.

Contractual Obligations

At September 30, 2015, there were no material changes to the Partnership's contractual obligations, critical accounting policies or off-balance sheet arrangements presented in Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations" of our Annual Report on Form 10-K for the year ended December 31, 2014.

Proposed Internal Revenue Service Regulation Impacting Master Limited Partnerships

We are a master limited partnership (MLP). Partnerships are generally not subject to federal income tax, although publicly-traded partnerships (such as TNCLP) are treated as corporations for federal income tax purposes and therefore are subject to federal income tax, unless at least 90% of the partnership's gross income is "qualifying income" as defined in Section 7704 of the Internal Revenue Code of 1986, as amended, and the partnership is not required to register as an investment company under the Investment Company Act of 1940. As we currently satisfy the requirements to be treated as a partnership for federal income tax purposes, no federal income taxes are paid by the Partnership.

On May 6, 2015, the Internal Revenue Service (IRS) published proposed regulations on the types of income and activities which constitute or generate qualifying income of a MLP. The proposed regulations would have the effect of limiting the types of income and activities which qualify under the MLP rules, subject to certain transition provisions. The IRS proposed regulations include as activities that generate qualifying income processing or refining and transportation activities with respect to any mineral or natural resource (including fertilizer), but reserve on specific proposals regarding fertilizer-related activities. Any change in the federal income tax treatment of income from fertilizer-related activities as qualifying income could have a material impact on the taxation of the Partnership and could have a material adverse impact on unitholder distributions. We continue to monitor these IRS regulatory activities.

19

TERRA NITROGEN COMPANY, L.P.

ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to the impact of changes in the price of natural gas which we use in the manufacture of our nitrogen fertilizer products. Because natural gas prices are volatile, we manage the risk of changes in natural gas prices through the use of derivative financial instruments.

The derivative instruments that we use are primarily natural gas fixed price swaps and options. These contracts settle using NYMEX futures prices, which represent the basis for fair value at any given time. The derivatives are traded in months forward and settlements are scheduled to coincide with anticipated natural gas purchases during those future periods.

As of September 30, 2015 and December 31, 2014, we had open derivative contracts for 67.2 million MMBtus and 7.6 million MMBtus, respectively, of natural gas. A $1.00 per MMBtu increase in the forward curve prices of natural gas as of September 30, 2015, would result in a favorable change in the fair value of these derivative positions of $64.1 million, and a $1.00 per MMBtu decrease would change their fair value unfavorably by $64.4 million.

ITEM 4.    CONTROLS AND PROCEDURES

(a)    Disclosure Controls and Procedures.    TNGP's management, with the participation of TNGP's Principal Executive Officer and Principal Financial Officer, has evaluated the effectiveness of the Partnership'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 (the Exchange Act)) as of the end of the period covered by this report. Based on such evaluation, TNGP's Principal Executive Officer and Principal Financial Officer have concluded that, as of the end of such period, the Partnership's disclosure controls and procedures are effective in (i) ensuring that information required to be disclosed by the Partnership in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC's rules and forms and (ii) ensuring that information required to be disclosed by the Partnership in the reports that it files or submits under the Exchange Act is accumulated and communicated to TNGP's management, including TNGP's Principal Executive Officer and Principal Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

(b)    Internal Control Over Financial Reporting.    There have not been any changes in the Partnership's internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended September 30, 2015 that have materially affected, or are reasonably likely to materially affect, the Partnership's internal control over financial reporting.

20

TERRA NITROGEN COMPANY, L.P.

FORWARD-LOOKING STATEMENTS

From time to time, in this Quarterly Report on Form 10-Q as well as in other written reports and oral statements, we make forward-looking statements that are not statements of historical fact and may involve a number of risks and uncertainties. These statements relate to analyses and other information that are based on forecasts of future results and estimates of amounts not yet determinable. These statements may also relate to our future prospects, developments and business strategies. We have used the words "anticipate," "believe," "could," "estimate," "expect," "intend," "may," "plan," "predict," "project," and similar terms and phrases, including references to assumptions, to identify forward-looking statements in this report. These forward-looking statements are made based on currently available competitive, financial and economic data, our current expectations, estimates, forecasts and projections about the industries and markets in which we operate and management's beliefs and assumptions concerning future events affecting us. These statements are not guarantees of future performance and are subject to risks, uncertainties and factors relating to our operations and business environment, all of which are difficult to predict and many of which are beyond our control. Therefore, our actual results may differ materially from what is expressed in or implied by any forward-looking statements. We caution you not to place undue reliance on any forward-looking statements. We do not undertake any responsibility to release publicly any revisions to these forward-looking statements to take into account events or circumstances that occur after the date of this document. Additionally, we do not undertake any responsibility to provide updates regarding the occurrence of any unanticipated events which may cause actual results to differ from those expressed or implied by the forward-looking statements contained in this report.

Important factors that could cause actual results to differ materially from our expectations include, among others:

• risks related to our reliance on one production facility;

• the volatility of natural gas prices in North America;

• the cyclical nature of our business and the agricultural sector;

• the global commodity nature of our fertilizer products, the impact of global supply and demand on our selling prices, and the intense global competition from other fertilizer producers;

• conditions in the U.S. agricultural industry;

• difficulties in securing the delivery, or delays or interruptions in the delivery of raw materials, such as natural gas;

• reliance on third party providers of transportation services and equipment;

• the significant risks and hazards involved in producing and handling our products against which we may not be fully insured;

• risks associated with cyber security;

• weather conditions;

• potential liabilities and expenditures related to environmental and health and safety laws and regulations;

• future regulatory restrictions and requirements related to greenhouse gas emissions or other environmental requirements;

• our inability to predict seasonal demand for our products accurately;

• risks involving derivatives and the effectiveness of our risk measurement and hedging activities;

• limited access to capital;

• acts of terrorism and regulations to combat terrorism;

• risks related to our dependence on and relationships with CF Industries;

• deterioration of global market and economic conditions;

• risks related to our partnership structure and control of the General Partner by CF Industries;

• changes in TNCLP’s available cash for distribution to its unitholders, due to, among other things, changes in its earnings, the amount of cash generated by its operations and the amount of cash reserves established by the General Partner for operating, capital and other requirements;

• the conflicts of interest that may be faced by the executive officers of the General Partner, who operate both us and CF Industries; and

• tax risks to our common unitholders and changes in our treatment as a partnership for U.S. or state income tax purposes.

For the detailed discussion of factors that might affect our performance, see Item 1A, "Risk Factors," of our Annual Report on Form 10-K, filed with the SEC on February 26, 2015.

21

TERRA NITROGEN COMPANY, L.P.

PART II. OTHER INFORMATION

ITEM 6.    EXHIBITS

A list of exhibits filed with this report on Form 10-Q (or incorporated by reference to exhibits previously filed or furnished) is provided in the Exhibit Index on page 24 of this report.

22

TERRA NITROGEN COMPANY, L.P.

SIGNATURES

Pursuant to the requirements 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.

	TERRA NITROGEN COMPANY, L.P.
	By:	TERRA NITROGEN GP INC. as General Partner
Date: November 9, 2015	By:	/s/ W. ANTHONY WILL
		W. Anthony Will President and Chief Executive Officer, Chairman of the Board (Principal Executive Officer)
Date: November 9, 2015	By:	/s/ DENNIS P. KELLEHER
		Dennis P. Kelleher Senior Vice President and Chief Financial Officer (Principal Financial Officer)

23

TERRA NITROGEN COMPANY, L.P.

EXHIBIT INDEX

Exhibit No.	Description
31.1	Certification of the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of the Principal Executive Officer Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification of the Principal Financial Officer Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101	The following financial information from Terra Nitrogen Company, L.P.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2015, formatted in XBRL (eXtensible Business Reporting Language): (1) Consolidated Balance Sheets, (2) Consolidated Statements of Operations, (3) Consolidated Statements of Partners' Capital, (4) Consolidated Statements of Cash Flows and (5) the Notes to Consolidated Financial Statements

24

EX-31.1

TERRA NITROGEN COMPANY, L.P.

Exhibit 31.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, W. Anthony Will, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Terra Nitrogen Company, L.P.;

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(s) 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(s) 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 functions):

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:	November 9, 2015	/s/ W. ANTHONY WILL
		W. Anthony Will President and Chief Executive Officer, Chairman of the Board of Terra Nitrogen GP Inc., general partner of Terra Nitrogen Company, L.P. (Principal Executive Officer)

EX-31.2

TERRA NITROGEN COMPANY, L.P.

Exhibit 31.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Dennis P. Kelleher, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Terra Nitrogen Company, L.P.;

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(s) 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(s) 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 functions):

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:	November 9, 2015	/s/ DENNIS P. KELLEHER
		Dennis P. Kelleher Senior Vice President and Chief Financial Officer of Terra Nitrogen GP Inc., general partner of Terra Nitrogen Company, L.P. (Principal Financial Officer)

EX-32.1

TERRA NITROGEN COMPANY, L.P.

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 Quarterly Report on Form 10-Q of Terra Nitrogen Company, L.P. (TNCLP) for the quarterly period ended September 30, 2015 as filed with the Securities and Exchange Commission on the date hereof (the Report), I, W. Anthony Will, President and Chief Executive Officer of Terra Nitrogen GP Inc., the general partner of TNCLP, hereby certify pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

1) The Report fully complies with the requirements of Section 13(a) or 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 results of operations of TNCLP as of and for the periods covered in the Report.

/s/ W. ANTHONY WILL
W. Anthony Will President and Chief Executive Officer, Chairman of the Board of Terra Nitrogen GP Inc., general partner of Terra Nitrogen Company, L.P. (Principal Executive Officer)
Date:	November 9, 2015

EX-32.2

TERRA NITROGEN COMPANY, L.P.

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 Quarterly Report on Form 10-Q of Terra Nitrogen Company, L.P. (TNCLP) for the quarterly period ended September 30, 2015 as filed with the Securities and Exchange Commission on the date hereof (the Report), I, Dennis P. Kelleher, Senior Vice President and Chief Financial Officer of Terra Nitrogen GP Inc., the general partner of TNCLP, hereby certify pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

1) The Report fully complies with the requirements of Section 13(a) or 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 results of operations of TNCLP as of and for the periods covered in the Report.

/s/ DENNIS P. KELLEHER
Dennis P. Kelleher Senior Vice President and Chief Financial Officer of Terra Nitrogen GP Inc., general partner of Terra Nitrogen Company, L.P. (Principal Financial Officer)
Date:	November 9, 2015

XML

Net Earnings per Common Unit (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net earnings per limited partner common unit
Net earnings	$ 69.4	$ 72.0	$ 227.7	$ 275.0
Weighted-average Common Units outstanding	18,500,000	18,500,000	18,500,000	18,500,000
Net earnings per Common Unit (in dollars per unit)	$ 2.23	$ 2.60	$ 7.57	$ 9.02
Dilutive TNCLP units outstanding	0	0	0	0
General Partner
Net earnings per limited partner common unit
Net earnings	$ 27.5	$ 23.3	$ 85.5	$ 105.5
Less: Net earnings allocable to General Partner	27.5	23.3	85.5	105.5
Common Units | Class B Common Units
Net earnings per limited partner common unit
Net earnings	0.7	0.7	2.2	2.7
Net earnings allocated	0.7	0.7	2.2	2.7
Common Units | Common Units
Net earnings per limited partner common unit
Net earnings	41.2	48.0	140.0	166.8
Net earnings allocated	$ 41.2	$ 48.0	$ 140.0	$ 166.8

XML

Agreement of Limited Partnership

9 Months Ended

Sep. 30, 2015

Partners' Capital Notes [Abstract]

Agreement of Limited Partnership

Agreement of Limited Partnership

We make quarterly distributions to holders of our general partner interest and limited partner interests based on Available Cash for the quarter as defined in our agreement of limited partnership. Available Cash is defined generally as all cash receipts less all cash disbursements, less certain reserves (including reserves for future operating and capital needs) established as the General Partner determines in its reasonable discretion to be necessary or appropriate. Changes in working capital affect Available Cash as changes in the amount of cash invested in working capital items (such as increases in inventory and decreases in accounts payable) reduce Available Cash, while declines in the amount of cash invested in working capital items increase Available Cash. During the nine months ended September 30, 2015, we declared and paid partnership distributions of $207.3 million. During the nine months ended September 30, 2014, we declared partnership distributions of $254.7 million, of which $253.0 million was paid as of September 30, 2014 and $1.7 million, included in the due to affiliates of the General Partner account as of September 30, 2014, was paid in the fourth quarter of 2014.

We receive 99% of the Available Cash from the Operating Partnership and 1% is distributed by the Operating Partnership to the General Partner. Cash distributions from the Operating Partnership generally represent the Operating Partnership's Available Cash from operations. Our cash distributions are made 99.975% to common and Class B common unitholders and 0.025% to the General Partner except when cumulative distributions of Available Cash exceed specified target levels above the Minimum Quarterly Distributions (MQD) of $0.605 per unit. Under such circumstances, the General Partner is entitled to receive Incentive Distribution Rights.

On November 4, 2015, we announced a $2.81 cash distribution per common limited partnership unit, payable on November 30, 2015 to holders of record as of November 16, 2015. In the third quarter of 2015, we exceeded the cumulative MQD amounts and will distribute Available Cash as summarized in the following table:

	Income and Distribution Allocation
	Target Limit		Target Increment		Common Units		Class B Common Units		General Partner		Total
Minimum Quarterly Distributions	$	0.605	$	0.605	98.990	%	0.985	%	0.025	%	100.00	%
First Target	0.715		0.110		98.990	%	0.985	%	0.025	%	100.00	%
Second Target	0.825		0.110		85.859	%	0.985	%	13.156	%	100.00	%
Third Target	1.045		0.220		75.758	%	0.985	%	23.257	%	100.00	%
Final Target and Beyond	>1.045		—		50.505	%	0.985	%	48.510	%	100.00	%

The General Partner is required to remit the majority of cash distributions it receives from the Partnership, in excess of its 1% Partnership equity interest, to an affiliated company.

As of September 30, 2015, the General Partner and its affiliates owned 75.3% of our outstanding units. When not more than 25% of our issued and outstanding units are held by non-affiliates of the General Partner, as was the case at September 30, 2015, we, at the General Partner's sole discretion, may call, or assign to the General Partner or its affiliates, our right to acquire all, but not less than all, such outstanding units held by non-affiliated persons. If the General Partner elects to acquire all outstanding units, we are required to give at least 30 but not more than 60 days' notice of our decision to purchase the outstanding units. The purchase price per unit will be the greater of (1) the average of the previous 20 trading days' closing prices as of the date five days before the purchase is announced or (2) the highest price paid by the General Partner or any of its affiliates for any unit within the 90 days preceding the date the purchase is announced.

XML

Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Property, plant and equipment, net
Document Period End Date		Sep. 30, 2015
Gross property, plant and equipment	$ 567.9	$ 567.9		$ 520.3
Less: Accumulated depreciation and amortization	257.6	257.6		260.9
Net property, plant and equipment	310.3	310.3		259.4
Loss on disposal of property, plant and equipment	0.5	1.7	$ 0.0
Net capitalized turnaround costs:
Beginning balance		16.7	22.7
Additions		33.1	0.3
Depreciation		(8.5)	(4.7)
Ending balance	41.3	41.3	$ 18.3
Land
Property, plant and equipment, net
Gross property, plant and equipment	1.6	1.6		1.6
Buildings and improvements
Property, plant and equipment, net
Gross property, plant and equipment	14.6	14.6		8.1
Machinery and equipment
Property, plant and equipment, net
Gross property, plant and equipment	539.4	539.4		401.4
Construction in progress
Property, plant and equipment, net
Gross property, plant and equipment	$ 12.3	$ 12.3		$ 109.2

XML

Fair Value Measurements (Details) - Recurring basis - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Quoted Market Prices in Active Markets (Level 1)
Fair value measurements
Cash and cash equivalents	$ 92.5	$ 113.0
Unrealized gains on natural gas derivatives	0.0
Total assets at fair value	92.5	113.0
Significant Other Observable Inputs (Level 2)
Fair value measurements
Unrealized gains on natural gas derivatives	0.3	0.1
Total assets at fair value	0.3	0.1
Unrealized losses on natural gas derivatives	(15.5)	(3.6)
Total liabilities at fair value	(15.5)	(3.6)
Total
Fair value measurements
Cash and cash equivalents	92.5	113.0
Unrealized gains on natural gas derivatives	0.3	0.1
Total assets at fair value	92.8	113.1
Unrealized losses on natural gas derivatives	(15.5)	(3.6)
Total liabilities at fair value	$ (15.5)	$ (3.6)

XML

Related Party Transactions (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) Term $ / Car	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Related party transactions
Document Period End Date			Sep. 30, 2015
Affiliate of General Partner
Related party transactions
Payroll, payroll-related expenses and other employee related benefits	$ 6,600,000	$ 6,400,000	$ 20,700,000	$ 17,900,000
Due From (To) Affiliates, Net	15,200,000		$ 15,200,000		$ 21,000,000
Services and Offtake Agreement | Affiliate of General Partner
Related party transactions
Extended term of agreement			1 year
Services and Offtake Agreement | CF Industries
Related party transactions
Allocated expenses	3,900,000	4,000,000	$ 11,800,000	11,700,000
Lease Agreements | Affiliate of General Partner
Related party transactions
Rental income received	$ 100,000	$ 100,000	$ 400,000	$ 400,000
Lease Agreements | Affiliate of General Partner | Ammonia assets
Related party transactions
Term of agreement			5 years
Related Party Transaction Number of Extensions Possible in Agreement Term | Term			3
Base quarterly rent of leased asset			$ 100,000
Lease Agreements | Affiliate of General Partner | Rail cars
Related party transactions
Extended term of agreement			1 year
Term of agreement			1 year
Quarterly rent per leased asset (in dollars per car) | $ / Car			3,600

XML

New Accounting Standards

9 Months Ended

Sep. 30, 2015

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

New Accounting Standards

New Accounting Standards

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers, which supersedes the revenue recognition requirements in Accounting Standards Codification (ASC) 605, Revenue Recognition. This ASU is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments. Additionally, information concerning the costs to obtain and fulfill a contract, including assets to be recognized, is to be disclosed. In August 2015, the FASB deferred the effective date of this ASU to December 15, 2017 for interim and annual reporting periods beginning after that date. Early adoption of the standard as of December 15, 2016 (for interim and annual reporting periods beginning after that date) is permitted by the FASB. We are currently evaluating the impact of the adoption of this ASU on our consolidated financial statements.

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 92.5	$ 113.0
Due from affiliates of the General Partner	22.6	25.2
Accounts receivable	0.8	0.4
Inventories	7.9	9.6
Prepaid expenses and other current assets	0.0	0.3
Total current assets	123.8	148.5
Property, plant and equipment, net	310.3	259.4
Other assets	8.4	7.9
Total assets	442.5	415.8
Current liabilities:
Accounts payable and accrued expenses	23.5	32.4
Due to affiliates of the General Partner	7.4	4.2
Other current liabilities	7.3	3.6
Total current liabilities	38.2	40.2
Other liabilities	9.0	0.7
Partners' capital:
General partner's interest	78.6	70.0
Total partners' capital	395.3	374.9
Total liabilities and partners' capital	442.5	415.8
Common Units
Partners' capital:
Limited partners' interests, 18,501,576 Common Units authorized, issued and outstanding; 184,072 Class B Common Units authorized, issued and outstanding	314.3	302.7
Class B Common Units
Partners' capital:
Limited partners' interests, 18,501,576 Common Units authorized, issued and outstanding; 184,072 Class B Common Units authorized, issued and outstanding	$ 2.4	$ 2.2

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities:
Net earnings	$ 227.7	$ 275.0
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	25.5	18.4
Unrealized loss on derivatives	11.6	4.7
Loss on disposal of property, plant and equipment	1.7	0.0
Changes in operating assets and liabilities:
Accounts receivable	(0.4)	0.0
Inventories	1.7	(1.7)
Accounts payable and accrued expenses	(6.0)	(2.4)
Due to/from affiliates of the General Partner	5.8	6.1
Other assets and liabilities	0.2	(3.3)
Net cash provided by operating activities	267.8	296.8
Investing Activities:
Additions to property, plant and equipment	(81.9)	(44.3)
Proceeds from Sale of Property, Plant, and Equipment	0.9	0.0
Net cash used in investing activities	(81.0)	(44.3)
Financing Activities:
Partnership distributions paid	(207.3)	(253.0)
Other	0.0	(8.0)
Net cash used in financing activities	(207.3)	(261.0)
Decrease in cash and cash equivalents	(20.5)	(8.5)
Cash and cash equivalents at beginning of period	113.0	86.9
Cash and cash equivalents at end of period	$ 92.5	$ 78.4

XML

Property, Plant and Equipment, net (Tables)

9 Months Ended

Sep. 30, 2015

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment, net

Property, plant and equipment, net consisted of the following:

	September 30, 2015		December 31, 2014
	(in millions)
Land	$	1.6	$	1.6
Buildings and improvements	14.6		8.1
Machinery and equipment	539.4		401.4
Construction in progress	12.3		109.2
	567.9		520.3
Less: Accumulated depreciation and amortization	257.6		260.9
	$	310.3	$	259.4

Summary of plant turnaround activity

The following is a summary of plant turnaround activity:

	Nine months ended   September 30,
	2015			2014
	(in millions)
Net capitalized turnaround costs:
Beginning balance	$	16.7		$	22.7
Additions	33.1			0.3
Depreciation	(8.5		)	(4.7		)
Ending balance	$	41.3		$	18.3

XML

Agreement of Limited Partnership (Details) $ / shares in Units, $ in Millions		3 Months Ended	9 Months Ended
	Nov. 04, 2015 $ / shares	Dec. 31, 2014 USD ($)	Sep. 30, 2015 USD ($) $ / Unit	Sep. 30, 2014 USD ($)
Agreement of limited partnership
Document Period End Date			Sep. 30, 2015
Declared partnership distributions | $			$ 207.3	$ 254.7
Cash partnership distributions paid | $		$ 1.7	$ 207.3	$ 253.0
Available cash received from operating partnership (as a percent)			99.00%
Number of average trading days' closing prices used to determine the purchase price of outstanding units of non-affiliates			20 days
Number of days before the purchase announcement is made, as a basis for determining the purchase price of outstanding units of non-affiliates			5 days
Minimum
Agreement of limited partnership
Percentage of ownership of non-affiliates of the General Partner allowing majority owner to acquire outstanding units held by non-affiliated persons			25.00%
Notice period for making decision to purchase the outstanding units			30 days
Maximum
Agreement of limited partnership
Notice period for making decision to purchase the outstanding units			60 days
Minimum Quarterly Distributions
Agreement of limited partnership
Target Limit			0.605
Target Increment			0.605
Income and distribution allocation (as a percent)			100.00%
First Target
Agreement of limited partnership
Target Limit			0.715
Target Increment			0.110
Income and distribution allocation (as a percent)			100.00%
Second Target
Agreement of limited partnership
Target Limit			0.825
Target Increment			0.110
Income and distribution allocation (as a percent)			100.00%
Third Target
Agreement of limited partnership
Target Limit			1.045
Target Increment			0.220
Income and distribution allocation (as a percent)			100.00%
Final Target and Beyond
Agreement of limited partnership
Income and distribution allocation (as a percent)			100.00%
Final Target and Beyond | Minimum
Agreement of limited partnership
Target Limit			1.045
Common and Class B Common Units
Agreement of limited partnership
Cash distribution made, excluding when cumulative distribution is specified, (as a percent)			99.975%
Common Units | Minimum Quarterly Distributions
Agreement of limited partnership
Income and distribution allocation (as a percent)			98.99%
Common Units | First Target
Agreement of limited partnership
Income and distribution allocation (as a percent)			98.99%
Common Units | Second Target
Agreement of limited partnership
Income and distribution allocation (as a percent)			85.859%
Common Units | Third Target
Agreement of limited partnership
Income and distribution allocation (as a percent)			75.758%
Common Units | Final Target and Beyond
Agreement of limited partnership
Income and distribution allocation (as a percent)			50.505%
Class B Common Units | Minimum Quarterly Distributions
Agreement of limited partnership
Income and distribution allocation (as a percent)			0.985%
Class B Common Units | First Target
Agreement of limited partnership
Income and distribution allocation (as a percent)			0.985%
Class B Common Units | Second Target
Agreement of limited partnership
Income and distribution allocation (as a percent)			0.985%
Class B Common Units | Third Target
Agreement of limited partnership
Income and distribution allocation (as a percent)			0.985%
Class B Common Units | Final Target and Beyond
Agreement of limited partnership
Income and distribution allocation (as a percent)			0.985%
General Partner
Agreement of limited partnership
Available cash distributed from operating partnership to General Partner (as a percent)			1.00%
Cash distribution made, excluding when cumulative distribution is specified, (as a percent)			0.025%
Partnership equity interest (as a percent)			1.00%
Percentage of outstanding units owned by the General Partner and its affiliates			75.30%
Period within which highest price is paid for any unit preceding the date the purchase is announced used to determine the purchase price of outstanding units of non-affiliates			90 days
General Partner | Minimum Quarterly Distributions
Agreement of limited partnership
Income and distribution allocation (as a percent)			0.025%
General Partner | First Target
Agreement of limited partnership
Income and distribution allocation (as a percent)			0.025%
General Partner | Second Target
Agreement of limited partnership
Income and distribution allocation (as a percent)			13.156%
General Partner | Third Target
Agreement of limited partnership
Income and distribution allocation (as a percent)			23.257%
General Partner | Final Target and Beyond
Agreement of limited partnership
Income and distribution allocation (as a percent)			48.51%
Subsequent Event
Agreement of limited partnership
Cash distribution declared per common limited partnership unit (in dollars per unit) | $ / shares	$ 2.81

XML

Background and Basis of Presentation

9 Months Ended

Sep. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Background and Basis of Presentation

Background and Basis of Presentation

Terra Nitrogen Company, L.P. (TNCLP, we, our or us) is a Delaware limited partnership that produces nitrogen fertilizer products. Our principal products are anhydrous ammonia (ammonia) and urea ammonium nitrate solutions (UAN), which we manufacture at our facility in Verdigris, Oklahoma.

We conduct our operations through an operating partnership, Terra Nitrogen, Limited Partnership (TNLP or the Operating Partnership, and collectively with TNCLP, the Partnership). Terra Nitrogen GP Inc. (TNGP or the General Partner), a Delaware corporation, is the General Partner of both TNCLP and TNLP and owns a consolidated 0.05% general partner interest in the Partnership. The General Partner is an indirect, wholly-owned subsidiary of CF Industries Holdings, Inc. (CF Industries), a Delaware corporation. Ownership of TNCLP is comprised of the general partner interests and the limited partner interests. Limited partner interests are represented by common units, which are listed for trading on the New York Stock Exchange under the symbol "TNH," and Class B common units. As of September 30, 2015, we had 18,501,576 common units and 184,072 Class B common units issued and outstanding. CF Industries through its subsidiaries owned 13,889,014 common units (representing approximately 75% of the total outstanding common units) and all of the Class B common units as of September 30, 2015.

We are a master limited partnership (MLP). Partnerships are generally not subject to federal income tax, although publicly-traded partnerships (such as TNCLP) are treated as corporations for federal income tax purposes (and therefore are subject to federal income tax), unless at least 90% of the partnership's gross income is "qualifying income" as defined in Section 7704 of the Internal Revenue Code of 1986, as amended, and the partnership is not required to register as an investment company under the Investment Company Act of 1940. As we currently satisfy the requirements to be treated as a partnership for federal income tax purposes, no federal income taxes are paid by the Partnership.

On May 6, 2015, the Internal Revenue Service (IRS) published proposed regulations on the types of income and activities which constitute or generate qualifying income of MLP. The proposed regulations would have the effect of limiting the types of income and activities which qualify under the MLP rules, subject to certain transition provisions. The proposed regulations include as activities that generate qualifying income processing or refining and transportation activities with respect to any mineral or natural resource (including fertilizer), but reserve on specific proposals regarding fertilizer-related activities. Any change in the federal income tax treatment of income from fertilizer-related activities as qualifying income could have a material impact on the taxation of the Partnership and could have a material adverse impact on unitholder distributions. We continue to monitor these IRS regulatory activities.

The accompanying unaudited interim consolidated financial statements have been prepared on the same basis as our audited consolidated financial statements for the year ended December 31, 2014, in accordance with accounting principles generally accepted in the United States for interim financial reporting. In the opinion of management, these statements reflect all adjustments, consisting only of normal and recurring adjustments, that are necessary for the fair representation of the information for the periods presented. The unaudited interim consolidated financial statements included herein have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. Operating results for any period presented apply to that period only and are not necessarily indicative of results for any future period.

The preparation of the unaudited interim consolidated financial statements requires management to make use of estimates and assumptions that affect the reported amount of assets and liabilities, revenue and expenses and certain financial statement disclosures. Actual results could differ from these estimates. Significant estimates and assumptions in these unaudited interim consolidated financial statements include net realizable value of inventories, environmental remediation liabilities, environmental and litigation contingencies, useful lives of property, plant and equipment, and the assumptions used in the evaluation of potential impairment of property, plant and equipment.

The accompanying unaudited interim consolidated financial statements should be read in conjunction with our audited consolidated financial statements and related disclosures included in our 2014 Annual Report on Form 10-K filed with the SEC on February 26, 2015.

Throughout this document, the term "affiliates of the General Partner" refers to consolidated subsidiaries of CF Industries, including TNGP.

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares	Sep. 30, 2015	Dec. 31, 2014
Common Units
Limited Partners' interests, common units authorized	18,501,576	18,501,576
Common units issued	18,501,576	18,501,576
Common units outstanding	18,501,576	18,501,576
Class B Common Units
Limited Partners' interests, common units authorized	184,072	184,072
Common units issued	184,072	184,072
Common units outstanding	184,072	184,072

XML

Agreement of Limited Partnership (Tables)

9 Months Ended

Sep. 30, 2015

Partners' Capital Notes [Abstract]

Summary of available cash distribution

In the third quarter of 2015, we exceeded the cumulative MQD amounts and will distribute Available Cash as summarized in the following table:

	Income and Distribution Allocation
	Target Limit		Target Increment		Common Units		Class B Common Units		General Partner		Total
Minimum Quarterly Distributions	$	0.605	$	0.605	98.990	%	0.985	%	0.025	%	100.00	%
First Target	0.715		0.110		98.990	%	0.985	%	0.025	%	100.00	%
Second Target	0.825		0.110		85.859	%	0.985	%	13.156	%	100.00	%
Third Target	1.045		0.220		75.758	%	0.985	%	23.257	%	100.00	%
Final Target and Beyond	>1.045		—		50.505	%	0.985	%	48.510	%	100.00	%

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Nov. 04, 2015
Document and Entity Information
Entity Registrant Name	TERRA NITROGEN CO L P /DE
Entity Central Index Key	0000879575
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Entity Common Stock, Shares Outstanding		18,501,576

XML

Net Earnings per Common Unit (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Unit [Abstract]

Schedule of calculation for net earnings per common unit

The following table provides a calculation for net earnings per common unit for the three and nine months ended September 30, 2015 and 2014:

	Three months ended   September 30,				Nine months ended   September 30,
	2015		2014		2015		2014
	(in millions, except per unit amounts)
Basic earnings per Common Unit:
Net earnings	$	69.4	$	72.0	$	227.7	$	275.0
Less: Net earnings allocable to General Partner	27.5		23.3		85.5		105.5
Less: Net earnings allocable to Class B Common Units	0.7		0.7		2.2		2.7
Net earnings allocable to Common Units	$	41.2	$	48.0	$	140.0	$	166.8
Weighted-average Common Units outstanding	18.5		18.5		18.5		18.5
Net earnings per Common Unit	$	2.23	$	2.60	$	7.57	$	9.02

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net sales:
Other income	$ 0.3	$ 0.1	$ 0.7	$ 0.5
Total	150.2	135.1	430.4	480.3
Cost of goods sold:
Materials, supplies and services	69.5	52.6	166.9	174.6
Gross margin	74.1	76.1	242.8	287.8
Other general and administrative expenses	0.8	0.1	3.3	1.1
Allocation of net earnings:
Net earnings	$ 69.4	$ 72.0	$ 227.7	$ 275.0
Net earnings per Common Unit (in dollars per unit)	$ 2.23	$ 2.60	$ 7.57	$ 9.02
Affiliate of General Partner
Net sales:
Product sales to an affiliate of the General Partner	$ 149.8	$ 134.9	$ 429.3	$ 479.4
Other income	0.1	0.1	0.4	0.4
Cost of goods sold:
Services provided by affiliates of the General Partner	6.6	6.4	20.7	17.9
Selling, general and administrative services provided by affiliates of the General Partner	3.9	4.0	11.8	11.7
General Partner
Allocation of net earnings:
Net earnings	27.5	23.3	85.5	105.5
Common Units | Class B Common Units
Allocation of net earnings:
Net earnings	0.7	0.7	2.2	2.7
Common Units | Common Units
Allocation of net earnings:
Net earnings	$ 41.2	$ 48.0	$ 140.0	$ 166.8

XML

Derivative Financial Instruments

9 Months Ended

Sep. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Derivative Financial Instruments

Derivative financial instruments are executed on our behalf by an affiliate of the General Partner to reduce our exposure to changes in commodity prices for natural gas. Natural gas is the largest and most volatile component of the manufacturing cost for nitrogen-based fertilizers.

The derivatives that we use are primarily natural gas fixed price swaps and options traded in the over-the-counter (OTC) markets. The derivative contract prices are based on NYMEX future prices based on physical delivery of natural gas at the Henry Hub in Louisiana, the most common and financially-liquid location of reference for derivative financial instruments related to natural gas. However, we purchase natural gas for our manufacturing facility from suppliers whose prices are based primarily on the ONEOK index (based on physical delivery of natural gas in Oklahoma, rather than at the Henry Hub). This creates a location basis differential between the derivative contract price and the price we pay for physical delivery of natural gas. Accordingly, the prices underlying the derivative financial instruments we use may not exactly match the prices of natural gas we purchase and consume. These natural gas derivative contracts are scheduled to coincide with our anticipated purchases of natural gas used to manufacture nitrogen products during those future periods. We use natural gas derivatives as an economic hedge of gas price risk, but without the application of hedge accounting.

We report derivatives on our consolidated balance sheets at fair value. Changes in fair value are recognized in cost of goods sold in the period of change. Cash flows related to natural gas derivatives are classified as operating activities.

The gross fair values of derivatives on our consolidated balance sheets are shown below. All balance sheet amounts from derivatives arise from natural gas derivatives that are not designated as hedging instruments. For additional information on derivative fair values, see Note 7—Fair Value Measurements.

	September 30, 2015			December 31, 2014
	(in millions)
Derivative Assets
Unrealized gains in other current assets	$	—		$	0.1
Unrealized gains in other assets	0.3			—
Total derivative assets	0.3			0.1
Derivative Liabilities
Unrealized losses in other current liabilities	(7.3		)	(3.6		)
Unrealized losses in other liabilities	(8.2		)	—
Total derivative liabilities	(15.5		)	(3.6		)
Net derivative liabilities	$	(15.2	)	$	(3.5	)

The effect of derivatives in our consolidated statements of operations is shown below. All amounts arise from natural gas derivatives that are not designated as hedging instruments and are recorded in cost of goods sold.

	Three months ended   September 30,						Nine months ended   September 30,
	2015			2014			2015			2014
	(in millions)
Unrealized mark-to-market (losses) gains	$	(17.0	)	$	1.8		$	(10.5	)	$	(7.1	)
Realized (losses) gains	(0.5		)	(3.6		)	(5.9		)	11.2
Net derivative (losses) gains	$	(17.5	)	$	(1.8	)	$	(16.4	)	$	4.1

As of September 30, 2015 and December 31, 2014, we had open derivative contracts for 67.2 million MMBtus and 7.6 million MMBtus, respectively, of natural gas. The derivative portfolio at September 30, 2015 includes natural gas derivatives that hedge a portion of the remainder of 2015, and a portion of 2016, 2017 and 2018 natural gas purchases. For the nine months ended September 30, 2015, we used derivatives to cover approximately 63% of our natural gas consumption.

As of September 30, 2015 and December 31, 2014, the aggregate fair value of derivative instruments with credit-risk-related contingent features in a net liability position of $15.5 million and $3.6 million, respectively, which also approximates the fair value of the maximum amount of additional collateral that would need to be posted or assets needed to settle the obligations if the credit-risk-related contingent features were triggered at the reporting dates. At both September 30, 2015 and December 31, 2014, we had no cash collateral on deposit with counterparties for derivative contracts. The credit support documents executed in connection with International Swaps and Derivatives Association (ISDA) agreements generally provide the right to set off collateral against amounts owing under the ISDA agreements upon the occurrence of a default or a specified termination event.

The following table presents amounts relevant to offsetting of our derivative assets and liabilities as of September 30, 2015 and December 31, 2014:

	Gross and net amounts presented in consolidated balance sheets(1)			Gross amounts not offset in consolidated balance sheets
				Financial instruments			Cash collateral received (pledged)		Net amount
	(in millions)
September 30, 2015
Total derivative assets	$	0.3		$	0.3		$	—	$	—
Total derivative liabilities	(15.5		)	(0.3		)	—		(15.2		)
Net derivative liabilities	$	(15.2	)	$	—		$	—	$	(15.2	)
December 31, 2014
Total derivative assets	$	0.1		$	0.1		$	—	$	—
Total derivative liabilities	(3.6		)	(0.1		)	—		(3.5		)
Net derivative liabilities	$	(3.5	)	$	—		$	—	$	(3.5	)

_______________________________________________________________________________

⁽¹⁾  We report the fair values of our derivative assets and liabilities on a gross basis on our consolidated balance sheets. As a result, amounts recognized and net amounts presented are the same.

XML

Inventories

9 Months Ended

Sep. 30, 2015

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consisted of the following:

	September 30, 2015		December 31, 2014
	(in millions)
Finished goods	$	4.5	$	7.8
Materials and supplies	3.4		1.8
Total	$	7.9	$	9.6

XML

Background and Basis of Presentation (Details) - shares	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Common Units
Common units and interest in the partnership
Common units issued	18,501,576	18,501,576
Class B Common Units
Common units and interest in the partnership
Common units issued	184,072	184,072
General Partner
Common units and interest in the partnership
Ownership interest in the partnership (as a percent)	0.05%
CF Industries | Common Units
Common units and interest in the partnership
Common units owned through subsidiaries	13,889,014
Percentage of outstanding units owned through subsidiaries	75.00%

XML

Inventories (Tables)

9 Months Ended

Sep. 30, 2015

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consisted of the following:

	September 30, 2015		December 31, 2014
	(in millions)
Finished goods	$	4.5	$	7.8
Materials and supplies	3.4		1.8
Total	$	7.9	$	9.6

XML

Related Party Transactions

9 Months Ended

Sep. 30, 2015

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

TNCLP and TNGP have no employees. We have entered into several agreements with a subsidiary of CF Industries relating to the operation of our business and the sale of the fertilizer products produced at our Verdigris facility. We believe that each of these agreements is on terms that are fair and reasonable to us.

General and Administrative Services and Product Offtake Agreement

Pursuant to the Amendment to the General and Administrative Services and Product Offtake Agreement (the Services and Offtake Agreement), the Partnership sells all of its fertilizer products to an affiliate of the General Partner at prices based on market prices for the Partnership's fertilizer products as defined in the Services and Offtake Agreement. Title and risk of loss transfer to an affiliate of the General Partner as the product is shipped from the plant gate. The Services and Offtake Agreement is effective for annual terms starting as of January 1st and will be extended automatically for successive one-year terms unless terminated by one of the parties prior to renewal.

Directly Incurred Charges

Since we have no employees, we rely on employees from an affiliate of the General Partner to operate our Verdigris facility. As a result, the payroll and payroll-related expenses and benefit costs, such as health insurance and pension costs, are incurred by an affiliate of the General Partner and directly charged to us. Payroll, payroll-related expenses and other employee-related benefit costs directly charged to us for the three and nine months ended September 30, 2015 were $6.6 million and $20.7 million, respectively, and for the three and nine months ended September 30, 2014 were $6.4 million and $17.9 million, respectively. We report these expenses as services provided by affiliates of the General Partner in cost of goods sold.

Allocated Charges

CF Industries, together with its affiliates, also provides certain services to us under the Services and Offtake Agreement. These services include production planning, manufacturing management, logistics, procurement, accounting, legal, risk management, investor relations and other general and administrative functions. Allocated expenses charged to us for the three and nine months ended September 30, 2015 were $3.9 million and $11.8 million, respectively, and for the three and nine months ended September 30, 2014 were $4.0 million and $11.7 million, respectively. We report these expenses as selling, general and administrative services provided by affiliates of the General Partner.

Amounts Due to/from Affiliates of the General Partner

We receive cash and make expenditures directly from our cash accounts. Because we sell our products to and receive payroll and other related services from affiliates of the General Partner, the affiliates of the General Partner continue to be both debtors and creditors to us. As of September 30, 2015 and December 31, 2014, we had a net balance due from affiliates of the General Partner of $15.2 million and $21.0 million, respectively.

Spare Parts Sharing Agreement

Affiliates of CF Industries own and operate nitrogen fertilizer complexes that utilize some equipment that is similar to equipment at our Verdigris nitrogen complex. Each of the various manufacturing complexes maintains spare parts for use in its facilities. In the event that an unplanned need arises and to help minimize manufacturing downtime, we have entered into a spare parts sharing agreement that permits spare parts to be shared among the manufacturing complexes from time to time. Parts that are borrowed from another complex under the agreement are either refurbished and returned to the lender or replaced.

Leases

We entered into an amended and restated lease with an affiliate of the General Partner under which the ammonia assets in our terminal in Blair, Nebraska are leased by the affiliate. The lease is effective for a five-year term ending on December 31, 2018, and the affiliate of the General Partner has options to renew for three additional five-year terms. The quarterly lease payment is $100,000, subject to an annual inflation adjustment, and additional rent will be paid equal to all costs, expenses, and obligations incurred by the affiliate of the General Partner related to the use, occupancy and operation of the terminal.

We also have leased certain of our rail cars to an affiliate of the General Partner for quarterly market-based rental payments of $3,600 per car. This lease was effective initially for a one-year term and is extended automatically for successive one-year terms unless terminated by either party thereto prior to renewal.

We recognized rental income for the three and nine months ended September 30, 2015 and 2014 of $0.1 million and $0.4 million, respectively.

XML

Fair Value Measurements

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents assets and liabilities included in our consolidated balance sheets that are recognized at fair value on a recurring basis, and indicates the fair value hierarchy utilized to determine such fair value as of September 30, 2015 and December 31, 2014.

	Balances as of September 30, 2015
	Total			Quoted Market Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Cash and cash equivalents	$	92.5		$	92.5	$	—		$	—
Unrealized gains on natural gas derivatives	0.3			—		0.3			—
Total assets at fair value	$	92.8		$	92.5	$	0.3		$	—
Unrealized losses on natural gas derivatives	$	(15.5	)	$	—	$	(15.5	)	$	—
Total liabilities at fair value	$	(15.5	)	$	—	$	(15.5	)	$	—

	Balances as of December 31, 2014
	Total			Quoted Market Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Cash and cash equivalents	$	113.0		$	113.0	$	—		$	—
Unrealized gains on natural gas derivatives	0.1			—		0.1			—
Total assets at fair value	$	113.1		$	113.0	$	0.1		$	—
Unrealized losses on natural gas derivatives	$	(3.6	)	$	—	$	(3.6	)	$	—
Total liabilities at fair value	$	(3.6	)	$	—	$	(3.6	)	$	—

Cash and Cash Equivalents

As of September 30, 2015 and December 31, 2014, our cash and cash equivalents consisted primarily of money market mutual funds that invest in U.S. government obligations.

Natural Gas Derivatives

The derivative instruments that we use are primarily natural gas fixed price swaps and options traded in the OTC markets with multi-national commercial banks, other major financial institutions and large energy companies. The derivatives are traded in months forward and settlements are scheduled to coincide with anticipated gas purchases during those future periods. These contracts settle using NYMEX futures prices and accordingly, to determine the fair value of these instruments, we use quoted market prices from NYMEX and standard pricing models with inputs derived from or corroborated by observable market data such as forward curves supplied by an industry-recognized unrelated third party. See Note 6—Derivative Financial Instruments for additional information.

XML

Property, Plant and Equipment, net

9 Months Ended

Sep. 30, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net

Property, plant and equipment, net consisted of the following:

	September 30, 2015		December 31, 2014
	(in millions)
Land	$	1.6	$	1.6
Buildings and improvements	14.6		8.1
Machinery and equipment	539.4		401.4
Construction in progress	12.3		109.2
	567.9		520.3
Less: Accumulated depreciation and amortization	257.6		260.9
	$	310.3	$	259.4

During the three and nine months ended September 30, 2015, we recorded losses of approximately $0.5 million and $1.7 million, respectively, on the disposal of certain machinery and equipment, which is included in other general and administrative expenses on our consolidated statements of operations.

Plant turnarounds—Scheduled inspections, replacements and overhauls of machinery and equipment at our continuous process manufacturing facility are referred to as plant turnarounds. The expenditures related to turnarounds are capitalized in property, plant and equipment when incurred. The following is a summary of plant turnaround activity:

	Nine months ended   September 30,
	2015			2014
	(in millions)
Net capitalized turnaround costs:
Beginning balance	$	16.7		$	22.7
Additions	33.1			0.3
Depreciation	(8.5		)	(4.7		)
Ending balance	$	41.3		$	18.3

Scheduled replacements and overhauls of machinery and equipment include the dismantling, repair or replacement and installation of various components including piping, valves, motors, turbines, pumps, compressors, heat exchangers and the replacement of catalyst when a full plant shutdown occurs. Scheduled inspections are also conducted during full plant shutdowns, including required safety inspections which entail the disassembly of various components such as steam boilers, pressure vessels and other equipment requiring safety certifications. Internal employee costs and overhead are not considered turnaround costs and are not capitalized.

XML

New Accounting Pronouncements and Changes in Accounting Principles (Policies)

9 Months Ended

Sep. 30, 2015

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

New Accounting Standards

New Accounting Standards

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers, which supersedes the revenue recognition requirements in Accounting Standards Codification (ASC) 605, Revenue Recognition. This ASU is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments. Additionally, information concerning the costs to obtain and fulfill a contract, including assets to be recognized, is to be disclosed. In August 2015, the FASB deferred the effective date of this ASU to December 15, 2017 for interim and annual reporting periods beginning after that date. Early adoption of the standard as of December 15, 2016 (for interim and annual reporting periods beginning after that date) is permitted by the FASB. We are currently evaluating the impact of the adoption of this ASU on our consolidated financial statements.

XML

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities that are recognized at fair value on a recurring basis

The following table presents assets and liabilities included in our consolidated balance sheets that are recognized at fair value on a recurring basis, and indicates the fair value hierarchy utilized to determine such fair value as of September 30, 2015 and December 31, 2014.

	Balances as of September 30, 2015
	Total			Quoted Market Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Cash and cash equivalents	$	92.5		$	92.5	$	—		$	—
Unrealized gains on natural gas derivatives	0.3			—		0.3			—
Total assets at fair value	$	92.8		$	92.5	$	0.3		$	—
Unrealized losses on natural gas derivatives	$	(15.5	)	$	—	$	(15.5	)	$	—
Total liabilities at fair value	$	(15.5	)	$	—	$	(15.5	)	$	—

	Balances as of December 31, 2014
	Total			Quoted Market Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Cash and cash equivalents	$	113.0		$	113.0	$	—		$	—
Unrealized gains on natural gas derivatives	0.1			—		0.1			—
Total assets at fair value	$	113.1		$	113.0	$	0.1		$	—
Unrealized losses on natural gas derivatives	$	(3.6	)	$	—	$	(3.6	)	$	—
Total liabilities at fair value	$	(3.6	)	$	—	$	(3.6	)	$	—

XML

Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Finished goods	$ 4.5	$ 7.8
Materials and supplies	3.4	1.8
Total	$ 7.9	$ 9.6

XML

CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL - USD ($) $ in Millions	Total	General Partner	Common Units Common Units	Class B Common Units Common Units
Partners' capital at Dec. 31, 2013	$ 309.0	$ 43.0	$ 264.5	$ 1.5
Increase (Decrease) in Partners' Capital
Net earnings	275.0	105.5	166.8	2.7
Distributions	(254.7)	(100.1)	(152.1)	(2.5)
Partners' capital at Sep. 30, 2014	329.3	48.4	279.2	1.7
Partners' capital at Dec. 31, 2014	374.9	70.0	302.7	2.2
Increase (Decrease) in Partners' Capital
Net earnings	227.7	85.5	140.0	2.2
Distributions	(207.3)	(76.9)	(128.4)	(2.0)
Partners' capital at Sep. 30, 2015	$ 395.3	$ 78.6	$ 314.3	$ 2.4

XML

Net Earnings per Common Unit

9 Months Ended

Sep. 30, 2015

Earnings Per Unit [Abstract]

Net Earnings per Common Unit

Net Earnings per Common Unit

Net earnings per common unit are based on the weighted-average number of common units outstanding during the period. The following table provides a calculation for net earnings per common unit for the three and nine months ended September 30, 2015 and 2014:

	Three months ended   September 30,				Nine months ended   September 30,
	2015		2014		2015		2014
	(in millions, except per unit amounts)
Basic earnings per Common Unit:
Net earnings	$	69.4	$	72.0	$	227.7	$	275.0
Less: Net earnings allocable to General Partner	27.5		23.3		85.5		105.5
Less: Net earnings allocable to Class B Common Units	0.7		0.7		2.2		2.7
Net earnings allocable to Common Units	$	41.2	$	48.0	$	140.0	$	166.8
Weighted-average Common Units outstanding	18.5		18.5		18.5		18.5
Net earnings per Common Unit	$	2.23	$	2.60	$	7.57	$	9.02

There were no dilutive TNCLP units outstanding for the three and nine months ended September 30, 2015 and 2014.

XML

Derivative Financial Instruments (Details) MMBTU in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) MMBTU	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) MMBTU	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($) MMBTU
Derivative financial instruments
Unrealized mark-to-market (losses) gains			$ (11,600,000)	$ (4,700,000)
Open derivative contracts for natural gas (in MMBtus) | MMBTU	67.2		67.2		7.6
Percentage of natural gas consumption covered by derivatives			63.00%
Aggregate fair value of the derivative instruments with credit-risk-related contingent features in net liability position	$ 15,500,000		$ 15,500,000		$ 3,600,000
Cash Collateral for Borrowed Securities	0		0		0
Total derivative assets
Gross and net amounts presented in consolidated balance sheet	300,000		300,000		100,000
Gross amounts not offset in consolidated balance sheet
Financial instruments	300,000		300,000		100,000
Cash collateral received	0		0		0
Net amount	0		0		0
Total derivative liabilities
Gross and net amounts presented in consolidated balance sheet	(15,500,000)		(15,500,000)		(3,600,000)
Gross amounts not offset in consolidated balance sheet
Financial instruments	(300,000)		(300,000)		(100,000)
Cash collateral pledged	0		0		0
Net amount	(15,200,000)		(15,200,000)		(3,500,000)
Net assets (liabilities)
Gross and net amounts presented in consolidated balance sheet	(15,200,000)		(15,200,000)		(3,500,000)
Natural gas derivatives not designated as hedging instruments
Derivative financial instruments
Derivative Asset, Current	0		0		100,000
Unrealized gains in other current assets	300,000		300,000		100,000
Derivative Liability, Current	(7,300,000)		(7,300,000)		(3,600,000)
Derivative Asset, Noncurrent	300,000		300,000		0
Unrealized losses in other current liabilities	(15,500,000)		(15,500,000)		(3,600,000)
Derivative Liability, Noncurrent	8,200,000		8,200,000		0
Net derivative liabilities	(15,200,000)		(15,200,000)		$ (3,500,000)
Unrealized mark-to-market (losses) gains	(17,000,000)	$ 1,800,000	(10,500,000)	(7,100,000)
Realized (losses) gains	(500,000)	(3,600,000)	(5,900,000)	11,200,000
Net derivative (losses) gains	$ (17,500,000)	$ (1,800,000)	$ (16,400,000)	$ 4,100,000

XML

Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of the gross fair values of derivatives on balance sheet

The gross fair values of derivatives on our consolidated balance sheets are shown below. All balance sheet amounts from derivatives arise from natural gas derivatives that are not designated as hedging instruments. For additional information on derivative fair values, see Note 7—Fair Value Measurements.

	September 30, 2015			December 31, 2014
	(in millions)
Derivative Assets
Unrealized gains in other current assets	$	—		$	0.1
Unrealized gains in other assets	0.3			—
Total derivative assets	0.3			0.1
Derivative Liabilities
Unrealized losses in other current liabilities	(7.3		)	(3.6		)
Unrealized losses in other liabilities	(8.2		)	—
Total derivative liabilities	(15.5		)	(3.6		)
Net derivative liabilities	$	(15.2	)	$	(3.5	)

Schedule of effects of derivatives in consolidated statements of operations

The effect of derivatives in our consolidated statements of operations is shown below. All amounts arise from natural gas derivatives that are not designated as hedging instruments and are recorded in cost of goods sold.

	Three months ended   September 30,						Nine months ended   September 30,
	2015			2014			2015			2014
	(in millions)
Unrealized mark-to-market (losses) gains	$	(17.0	)	$	1.8		$	(10.5	)	$	(7.1	)
Realized (losses) gains	(0.5		)	(3.6		)	(5.9		)	11.2
Net derivative (losses) gains	$	(17.5	)	$	(1.8	)	$	(16.4	)	$	4.1

Schedule of offsetting of derivative assets and liabilities

The following table presents amounts relevant to offsetting of our derivative assets and liabilities as of September 30, 2015 and December 31, 2014:

	Gross and net amounts presented in consolidated balance sheets(1)			Gross amounts not offset in consolidated balance sheets
				Financial instruments			Cash collateral received (pledged)		Net amount
	(in millions)
September 30, 2015
Total derivative assets	$	0.3		$	0.3		$	—	$	—
Total derivative liabilities	(15.5		)	(0.3		)	—		(15.2		)
Net derivative liabilities	$	(15.2	)	$	—		$	—	$	(15.2	)
December 31, 2014
Total derivative assets	$	0.1		$	0.1		$	—	$	—
Total derivative liabilities	(3.6		)	(0.1		)	—		(3.5		)
Net derivative liabilities	$	(3.5	)	$	—		$	—	$	(3.5	)

_______________________________________________________________________________

⁽¹⁾  We report the fair values of our derivative assets and liabilities on a gross basis on our consolidated balance sheets. As a result, amounts recognized and net amounts presented are the same.