Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
OPERATING ACTIVITIES
Net income	$ 278,685	$ 276,005	$ 217,586
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, depletion and amortization	148,718	135,742	143,406
Non-cash cost of real estate sold	4,746	4,329	6,692
Stock-based incentive compensation expense	15,116	16,181	15,223
Gain on sale of a portion of interest in the New Zealand joint venture	0	0	(11,545)
Amortization of debt discount/premium	6,323	8,654	8,160
Deferred income taxes	3,505	2,498	14,936
Amortization of losses from pension and postretirement plans	19,493	12,369	6,135
Non-cash adjustments to unrecognized tax benefit liability	0	(16,000)	4,723
Other	(2,880)	5,184	(237)
Changes in operating assets and liabilities:
Receivables	(4,248)	(12,011)	20,774
Inventories	(10,649)	(3,868)	(27,693)
Accounts payable	(7,967)	6,347	(4,606)
Income tax and alternative fuel mixture credit receivable/payable	2,248	19,788	170,845
All other operating activities	2,750	(13,739)	(60,377)
Expenditures for dispositions and discontinued operations	(9,926)	(9,209)	(8,632)
CASH PROVIDED BY OPERATING ACTIVITIES	445,914	432,270	495,390
INVESTING ACTIVITIES
Capital expenditures	(157,562)	(144,522)	(138,449)
Purchase of timberlands	(106,536)	(320,899)	(5,360)
Jesup mill cellulose specialties expansion	(201,359)	(42,894)	0
Change in restricted cash	(10,559)	8,323	(8,231)
Other	3,115	11,378	9,384
CASH USED FOR INVESTING ACTIVITIES	(472,901)	(488,614)	(142,656)
FINANCING ACTIVITIES
Issuance of debt (Note 11)	1,230,000	460,000	157,000
Repayment of debt	(813,610)	(499,057)	(96,650)
Dividends paid	(206,583)	(185,272)	(163,673)
Proceeds from the issuance of common shares	25,495	13,451	26,314
Excess tax benefits on stock-based compensation	7,635	5,681	5,411
Debt issuance costs	(6,135)	(2,027)	(561)
Repurchase of common shares	(7,783)	(7,909)	(6,028)
CASH PROVIDED BY (USED FOR) FINANCING ACTIVITIES	229,019	(215,133)	(78,187)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(39)	617	(48)
CASH AND CASH EQUIVALENTS
Change in cash and cash equivalents	201,993	(270,860)	274,499
Balance, beginning of year	78,603	349,463	74,964
Balance, end of year	280,596	78,603	349,463
Cash paid during the year:
Interest	34,956	38,223	39,991
Income taxes	74,745	17,509	11,776
Non-cash investing and financing activity:
Acquisition of timberlands (Note 6)	0	105,000	0
Assumption of loan (Note 11)	0	105,000	0
Capital assets purchased on account	$ 25,926	$ 20,866	$ 12,388