LONGVIEW TIMBER PURCHASE - Estimated fair values of identifiable assets acquired and liabilities assumed (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Jul. 23, 2013
Business Acquisition [Line Items]
Timber and timberlands	$ 6,530	$ 6,580
Previously Reported
Business Acquisition [Line Items]
Current assets			46
Property and equipment			39
Timber and timberlands			2,654
Other assets			2
Total assets acquired			2,741
Current liabilities			10
Long-term debt			1,122
Other liabilities			5
Total liabilities assumed			1,137
Net assets acquired			1,604
Measurement Period Adjustments
Business Acquisition [Line Items]
Current assets		0
Property and equipment		1
Timber and timberlands		2
Other assets		0
Total assets acquired		3
Current liabilities		0
Long-term debt		0
Other liabilities		3
Total liabilities assumed		3
Net assets acquired		0
Final
Business Acquisition [Line Items]
Current assets		46
Property and equipment		40
Timber and timberlands		2,656
Other assets		2
Total assets acquired		2,744
Current liabilities		10
Long-term debt		1,122
Other liabilities		8
Total liabilities assumed		1,140
Net assets acquired		$ 1,604