CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Mandatory convertible preference shares, series A:	Common shares:	Other capital:	Retained earnings:	Cumulative other comprehensive loss:	Total Weyerhaeuser shareholders’ interest:	Noncontrolling interests:
Balance at beginning of year at Dec. 31, 2012		$ 0	$ 678	$ 4,731	$ 219	$ (1,558)		$ 43
New issuance		14	42	1,509
Shares tendered (Note 3)			0	0
Exercise of stock options			9	152
Repurchase of common shares			0	0
Share-based compensation				42
Other transactions, net				10
Net earnings attributable to Weyerhaeuser	$ 563				563
Dividends on common shares (Note 16)					(465)
Cash dividends on preference shares (Note 16)					(23)
Foreign currency translation adjustments	(59)					(59)
Changes in unamortized net pension and other postretirement benefit loss (Note 9)	902					902
Changes in unamortized prior service credit (cost) (Note 9)	27					27
Unrealized gains on available-for-sale securities	2					2
New consolidations, de-consolidations and other transactions								(6)
Balance at end of year at Dec. 31, 2013	6,832	14	729	6,444	294	(686)	$ 6,795	37
New issuance		0	0	0
Shares tendered (Note 3)			(73)	(1,881)
Exercise of stock options			7	112
Repurchase of common shares			(7)	(196)
Share-based compensation				35
Other transactions, net				5
Net earnings attributable to Weyerhaeuser	1,826				1,826
Dividends on common shares (Note 16)					(568)
Cash dividends on preference shares (Note 16)					(44)
Foreign currency translation adjustments	(50)					(50)
Changes in unamortized net pension and other postretirement benefit loss (Note 9)	(554)					(554)
Changes in unamortized prior service credit (cost) (Note 9)	(103)					(103)
Unrealized gains on available-for-sale securities	0					0
New consolidations, de-consolidations and other transactions								(37)
Balance at end of year at Dec. 31, 2014	5,304	14	656	4,519	1,508	(1,393)	5,304	0
New issuance		0	0	0
Shares tendered (Note 3)			0	0
Exercise of stock options			2	32
Repurchase of common shares			(20)	(498)
Share-based compensation				32
Other transactions, net				(5)
Net earnings attributable to Weyerhaeuser	506				506
Dividends on common shares (Note 16)					(621)
Cash dividends on preference shares (Note 16)					(44)
Foreign currency translation adjustments	(97)					(97)
Changes in unamortized net pension and other postretirement benefit loss (Note 9)	282					282
Changes in unamortized prior service credit (cost) (Note 9)	(4)					(4)
Unrealized gains on available-for-sale securities	0					0
New consolidations, de-consolidations and other transactions								0
Balance at end of year at Dec. 31, 2015	$ 4,869	$ 14	$ 638	$ 4,080	$ 1,349	$ (1,212)	$ 4,869	$ 0