CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net sales	$ 7,082	$ 7,403	$ 7,254
Costs of products sold	5,694	5,763	5,716
Gross margin	1,388	1,640	1,538
Selling expenses	113	112	125
General and administrative expenses	289	338	404
Research and development expenses	24	27	33
Charges for restructuring, closures and impairments (Note 18)	25	44	377
Other operating costs (income), net (Note 19)	18	(201)	(35)
Operating income	919	1,320	634
Earnings (loss) from equity affiliates	(105)	(1)	1
Interest income and other	36	38	54
Interest expense, net of capitalized interest	(347)	(344)	(369)
Earnings from continuing operations before income taxes	503	1,013	320
Income taxes (Note 20)	3	(185)	171
Earnings from continuing operations	506	828	491
Earnings from discontinued operations, net of income taxes (Note 3)	0	998	72
Net earnings	506	1,826	563
Net earnings attributable to Weyerhaeuser	506	1,826	563
Dividends on preference shares	(44)	(44)	(23)
Net earnings attributable to Weyerhaeuser common shareholders	$ 462	$ 1,782	$ 540
Basic earnings per share attributable to Weyerhaeuser common shareholders (Note 5):
Continuing operations	$ 0.89	$ 1.41	$ 0.82
Discontinued operations	0.00	1.79	0.13
Net earnings per share	0.89	3.20	0.95
Diluted earnings per share attributable to Weyerhaeuser common shareholders (Note 5):
Continuing operations	0.89	1.40	0.82
Discontinued operations	0.00	1.78	0.13
Net earnings per share	0.89	3.18	0.95
Dividends paid per common share	$ 1.20	$ 1.02	$ 0.81
Weighted average shares outstanding (in thousands) (Note 5):
Basic	516,371	556,705	566,329
Diluted	519,618	560,899	571,239