CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net sales	$ 1,872	$ 1,709	$ 5,373	$ 4,769
Costs of products sold	1,374	1,328	3,982	3,702
Gross margin	498	381	1,391	1,067
Selling expenses	22	22	66	67
General and administrative expenses	75	80	238	253
Research and development expenses	4	5	12	14
Charges for integration and restructuring, closures and asset impairments (Note 15)	14	16	178	141
Charges for product remediation (Note 16)	190	0	240	0
Other operating costs (income), net (Note 17)	(12)	(3)	2	(56)
Operating income	205	261	655	648
Equity earnings from joint ventures (Note 7)	1	9	1	21
Non-operating pension and other postretirement benefit (costs) credits	(16)	13	(46)	37
Interest income and other	11	15	29	34
Interest expense, net of capitalized interest	(98)	(114)	(297)	(323)
Earnings from continuing operations before income taxes	103	184	342	417
Income taxes (Note 18)	27	(22)	(31)	(64)
Earnings from continuing operations	130	162	311	353
Earnings from discontinued operations, net of income taxes (Note 3)	0	65	0	123
Net earnings	130	227	311	476
Dividends on preference shares (Note 5)	0	0	0	(22)
Net earnings attributable to Weyerhaeuser common shareholders	$ 130	$ 227	$ 311	$ 454
Earnings per share attributable to Weyerhaeuser common shareholders, basic (Note 5):
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.17	$ 0.22	$ 0.41	$ 0.47
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0.00	0.08	0.00	0.17
Earnings Per Share, Basic	0.17	0.30	0.41	0.64
Earnings per share attributable to Weyerhaeuser common shareholders, diluted (Note 5)
Income (Loss) from Continuing Operations, Per Diluted Share	0.17	0.21	0.41	0.46
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	0.00	0.09	0.00	0.18
Earnings Per Share, Diluted	0.17	0.30	0.41	0.64
Dividends paid per share	$ 0.31	$ 0.31	$ 0.93	$ 0.93
Weighted average shares outstanding (in thousands) (Note 5):
Basic	753,535	749,587	752,301	708,395
Diluted	756,903	754,044	756,058	712,205