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EQUITY AFFILIATES - Additional Information (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Forest Products \| North Pacific Paper Corporation (NORPAC)
Schedule of Equity Method Investments [Line Items]
Payable balance to equity affiliate	$ 102	$ 75
Equity affiliate, ownership	50.00%
Real Estate
Schedule of Equity Method Investments [Line Items]
Number of equity investments in real estate partnerships and limited liability companies	6
Minimum \| Real Estate
Schedule of Equity Method Investments [Line Items]
Equity affiliate, ownership	7.00%
Maximum \| Real Estate
Schedule of Equity Method Investments [Line Items]
Equity affiliate, ownership	50.00%

Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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