LONGVIEW TIMBER PURCHASE - Additional Information (Details) (USD $)	3 Months Ended	6 Months Ended		3 Months Ended		3 Months Ended			3 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Jun. 30, 2012	Sep. 30, 2013 Subsequent event	Jul. 23, 2013 Subsequent event Rate acre	Jun. 30, 2013 Common shares	Sep. 30, 2013 Common shares Subsequent event	Jul. 02, 2013 Common shares Subsequent event	Jun. 30, 2013 6.375 percent Mandatory Convertible Preference Shares, Series A Rate	Dec. 31, 2012 6.375 percent Mandatory Convertible Preference Shares, Series A	Jun. 30, 2013 Minimum 6.375 percent Mandatory Convertible Preference Shares, Series A	Jun. 30, 2013 Maximum 6.375 percent Mandatory Convertible Preference Shares, Series A	Jul. 23, 2013 Oregon Subsequent event acre	Jul. 23, 2013 Washington Subsequent event acre
Business Acquisition [Line Items]
Effective date of acquisition				Jul. 23, 2013
Equity interests purchased					100.00%
Timberlands acquired, acres					645,000								333,000	312,000
Aggregate purchase price					$ 2,650,000,000
Longview Timber debt assumed				1,070,000,000
Debt financing we expect to obtain	1,100,000,000
New shares issued						29,000,000	4,400,000		13,800,000
New shares issued, date						Jun. 18, 2013	Jul. 02, 2013		Jun. 18, 2013
Valuation date closing stock price						$ 27.75		$ 27.75
Net proceeds from issuance of common shares(2) (Note 14)		781,000,000	0			781,000,000	117,000,000
Preference shares, par value									$ 1.00	$ 1.00
Preference shares, liquidation preference									$ 50.00
Net proceeds from issuance of preference shares(2) (Note 14)		$ 669,000,000	$ 0						$ 669,000,000
Preference shares, dividend rate									6.375%
Preference shares, shares that will be issued upon conversion											1.5015	1.8018