Segment and Geographical Information Schedule of Segment Information (Details) (USD $)	3 Months Ended								9 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended																																										36 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 30, 2011 Secured Mortgage Notes Assumed with Timberland Acquisition [Member]	Dec. 31, 2013 Secured Mortgage Notes Assumed with Timberland Acquisition [Member]	Dec. 31, 2012 Secured Mortgage Notes Assumed with Timberland Acquisition [Member]	Dec. 31, 2011 Secured Mortgage Notes Assumed with Timberland Acquisition [Member]	Dec. 31, 2011 Port Angeles Increase in Disposition Reserve [Member]	Dec. 31, 2013 New Zealand Joint Venture [Member]	Dec. 31, 2013 Forest Resources [Member] acre		Dec. 31, 2012 Forest Resources [Member]		Dec. 31, 2011 Forest Resources [Member]		Dec. 31, 2012 Forest Resources [Member] Timber Properties [Member]	Dec. 31, 2011 Forest Resources [Member] Timber Properties [Member]	Dec. 31, 2013 Real Estate Segment [Member]		Dec. 31, 2012 Real Estate Segment [Member]		Dec. 31, 2011 Real Estate Segment [Member]		Dec. 31, 2013 Other Operations	Dec. 31, 2012 Other Operations	Dec. 31, 2011 Other Operations	Dec. 31, 2013 Intersegment Elimination	Dec. 31, 2012 Intersegment Elimination	Dec. 31, 2011 Intersegment Elimination	Dec. 31, 2013 Corporate and other		Dec. 31, 2012 Corporate and other		Dec. 31, 2011 Corporate and other		Dec. 31, 2011 Corporate and other Port Angeles Increase in Disposition Reserve [Member]	Dec. 31, 2013 Wood Products Segment [Member]	Dec. 31, 2013 Performance Fibers Segment [Member]		Dec. 31, 2012 Performance Fibers Segment [Member]		Dec. 31, 2011 Performance Fibers Segment [Member]		Dec. 31, 2013 Performance Fibers Segment [Member] Cellulose Specialties Expansion (CSE) [Member]	Dec. 31, 2012 Performance Fibers Segment [Member] Cellulose Specialties Expansion (CSE) [Member]	Dec. 31, 2011 Performance Fibers Segment [Member] Cellulose Specialties Expansion (CSE) [Member]	Dec. 31, 2013 Performance Fibers Segment [Member] Cellulose Specialties Expansion (CSE) [Member]	Dec. 31, 2013 Wood Products Segment [Member]		Dec. 31, 2012 Wood Products Segment [Member]		Dec. 31, 2011 Wood Products Segment [Member]
Segment Reporting Information [Line Items]
Sales	$ 520,242,000	$ 384,784,000	$ 409,077,000	$ 393,719,000	$ 412,660,000	$ 386,163,000	$ 348,096,000	$ 336,571,000		$ 1,707,822,000	$ 1,483,490,000	$ 1,420,960,000							$ 382,000,000	[1]	$ 230,000,000	[1]	$ 215,000,000	[1]			$ 149,000,000	[2]	$ 57,000,000	[2]	$ 71,000,000	[2]	$ 138,000,000	$ 105,000,000	$ 122,000,000	$ (3,000,000)	$ (2,000,000)	$ (7,000,000)									$ 1,042,000,000		$ 1,093,000,000		$ 1,020,000,000
Sales									145,719,000	146,000,000
Acres of timberland divested																			128,000
Land sales																			57,000,000
Operating Income										422,814,000	400,560,000	357,294,000							81,000,000		46,000,000		47,000,000				56,000,000		32,000,000		47,000,000		2,000,000	0	1,000,000				(27,000,000)	[3]	(36,000,000)	[3]	(36,000,000)	[3]			311,000,000		359,000,000		298,000,000
Step Acquisition equity interest in acquiree remeasurement gain (loss), net																		16,000,000
Accrual for Environmental Loss Contingencies, Increase (Decrease) for Revision in Estimates										3,253,000	797,000	6,873,000					6,500,000																												7,000,000
Total assets acquired										325,000,000	468,000,000	613,000,000							83,000,000	[4]	156,000,000	[4]	468,000,000	[4]															0		1,000,000		2,000,000				242,000,000	[5]	309,000,000	[5]	140,000,000	[5]					0	[6]	2,000,000	[6]	3,000,000	[6]
Less: Assumption of loan for timberlands acquisition										0	0	(105,000,000)	(105,000,000)	0	0	(105,000,000)
Strategic Capital																									107,000,000	426,000,000																											141,000,000	201,000,000	43,000,000	385,000,000
Depreciation, depletion and amortization										191,274,000	145,540,000	132,548,000							99,000,000		75,000,000	[7]	63,000,000	[7]			17,000,000		8,000,000		12,000,000								0		2,000,000		2,000,000			27,000,000	75,000,000		61,000,000		56,000,000
Total Assets	3,685,501,000				3,122,951,000				3,685,501,000	3,685,501,000	3,122,951,000								2,163,000,000	[8]	1,690,000,000	[8]					149,000,000		113,000,000				37,000,000	23,000,000					258,000,000		377,000,000					577,000,000	1,079,000,000		902,000,000								0	[6]	18,000,000	[6]
Segment Reporting- Expenditures for Additions to Long-Lived Assets										$ 325,000,000	$ 468,000,000	$ 508,000,000

[1] 2013 included $146 million in sales from the consolidation of the New Zealand JV. See Note 4 — Joint Venture Investment.

[2] 2013 included a fourth quarter sale of approximately 128,000 acres of New York timberland holdings for $57 million.

[3] 2013 included a $16 million gain related to the consolidation of the New Zealand JV. See Note 4 — Joint Venture Investment. 2011 included a $7 million increase in a disposition reserve.

[4] Includes strategic timberland acquisitions of $107 million and $426 million (including assumption of a $105 million loan) in 2012 and 2011, respectively.

[5] Includes $141 million, $201 million, and $43 million of strategic capital expenditures related to the Jesup mill CSE in 2013, 2012 and 2011, respectively.

[6] The Company sold its Wood Products segment during the first quarter of 2013. See Note 3— Sale of Wood Products Business for additional information.

[7] 2013 included an increase of approximately $27 million in depletion expense related to the consolidation of the New Zealand JV. See Note 4 — Joint Venture Investment. Total Assets 2013 2012Forest Resources (a)$2,163 $1,690Real Estate149 113Performance Fibers1,079 902Wood Products (b)— 18Other Operations37 23Corporate and other258 377Total$3,686 $3,123

[8] 2013 included an increase in total assets of approximately $577 million related to the consolidation of the New Zealand JV. See Note 4 — Joint Venture Investment.