Timber Notes/Non-Recourse Debt (Details) (USD $)	1 Months Ended				1 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended	1 Months Ended			12 Months Ended					12 Months Ended
	Oct. 31, 2004	Dec. 31, 2011	Dec. 31, 2004	Oct. 31, 2004 Installment Notes [Member]	Oct. 31, 2004 Installment Notes [Member] Lehman Brothers Holdings Inc [Member]	Dec. 31, 2008 Installment Notes [Member] Lehman Brothers Holdings Inc [Member]	Dec. 31, 2011 Installment Notes [Member] Lehman Brothers Holdings Inc [Member]	Sep. 30, 2008 Installment Notes [Member] Lehman Brothers Holdings Inc [Member]	Oct. 31, 2004 Installment Notes [Member] Wachovia Corporation [Member]	Dec. 31, 2011 Installment Notes [Member] Wachovia Corporation [Member]	Oct. 31, 2004 Installment Notes [Member] Tranch One [Member] years	Oct. 31, 2004 Installment Notes [Member] Tranch Two [Member] years	Dec. 31, 2011 Securitization Notes [Member] Lehman Brothers Holdings Inc [Member]	Dec. 31, 2011 Securitization Notes [Member] Wachovia Corporation [Member]	Dec. 31, 2004 Securitization Notes [Member] Wachovia Corporation [Member]	Dec. 31, 2004 Securitization Notes [Member] Tranch One [Member] years	Dec. 31, 2004 Securitization Notes [Member] Tranch Two [Member] years	Dec. 31, 2011 Timberland Assets [Member]	Dec. 31, 2011 Class 3 Senior Unsecured Claim [Member] Installment Notes [Member] Lehman Brothers Holdings Inc [Member]	Dec. 31, 2011 Minimum [Member] Installment Notes [Member] Lehman Brothers Holdings Inc [Member]	Dec. 31, 2011 Minimum [Member] Other Class Of Guarantee Claims [Member] Installment Notes [Member] Lehman Brothers Holdings Inc [Member]	Dec. 31, 2011 Maximum [Member] Installment Notes [Member] Lehman Brothers Holdings Inc [Member]	Dec. 31, 2011 Maximum [Member] Other Class Of Guarantee Claims [Member] Installment Notes [Member] Lehman Brothers Holdings Inc [Member]
Timber Notes/Non-Recourse Debt Receivable And Payable [Line Items]
Cash received from sale of timberland assets	$ 15,000,000
Timber notes receivable	1,635,000,000			817,500,000	817,500,000	81,800,000	81,800,000			817,500,000	817,500,000	817,500,000
Timber notes receivable - terms (in years)											15	15
Timber note receivables - interest rates											5.11%	4.98%
Timber securitization notes			1,470,000,000										735,000,000		735,000,000	735,000,000	735,000,000
Cash received from the securitization of timber notes			1,470,000,000
Timber securitization notes - terms (in years)																15	15
Timber securitization notes - interest rates																5.54%	5.42%
Timber notes receivable defaulted as result of Lehman bankruptcy								817,500,000
Non-cash impairment charge pre-tax						735,800,000
Percentage of claim recovery rate																			21.10%	17.00%	11.00%	20.00%	13.00%
Timber notes receivable - maturity year					2020				2020	2020	2020	2020
Timber securitization notes - maturity year														2019
Timberlands asset sale deferred tax liability		$ 529,000,000																$ 543,000,000