LONGVIEW TIMBER PURCHASE - Additional Information (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended			3 Months Ended
	Sep. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013	Jul. 23, 2013 acre Rate
Business Acquisition [Line Items]
Acquisition of Longview Timber LLC, effective date of acquisition	Jul. 23, 2013
Acquisition of Longview Timber LLC, equity interests purchased						100.00%
Acquisition of Longview Timber LLC, net of cash acquired	$ 1,580,000,000	$ 0	$ 1,581,000,000	$ 0
Acquisition of Longview Timber LLC, debt assumed	1,070,000,000	0	1,070,000,000	0
Acquisition of Longview Timber LLC, aggregate purchase price	2,650,000,000
Acquisition of Longview Timber LLC, timberlands acquired, acres						645,000
New shares issued		0	33,350	0
Net proceeds from issuance of common shares		0	897,000,000	0
Fees related to bridge loan			11,000,000
Common shares
Business Acquisition [Line Items]
New shares issued	4,400				29,000
New shares issued, date	Jul. 08, 2013				Jun. 24, 2013
Valuation date closing stock price	$ 27.75				$ 27.75
Net proceeds from issuance of common shares	116,000,000				781,000,000
6.375 percent Mandatory Convertible Preference Shares, Series A
Business Acquisition [Line Items]
New shares issued					13,800
New shares issued, date					Jun. 24, 2013
Preference shares, par value		$ 1.00	$ 1.00		$ 1.00
Preference shares, liquidation preference		$ 50.00	$ 50.00		$ 50.00
Net proceeds from issuance of preference shares					$ 669,000,000