BUSINESS SEGMENTS - Reconciliation of Contribution (Charge) to Earnings to Net Earnings (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Contribution (Charge) to Earnings From Segment to Net Earnings [Line Items]
Net contribution to earnings	$ 805	$ 788	$ 661
Interest expense, net of capitalized interest	(371)	(348)	(384)
Income before income taxes (continuing and discontinued operations)	434	440	277
Income taxes (continuing and discontinued operations)	129	(55)	54
Net earnings attributable to Weyerhaeuser	563	385	331
Segment, Continuing Operations
Reconciliation of Contribution (Charge) to Earnings From Segment to Net Earnings [Line Items]
Net contribution to earnings	805	788	641
Segment, Discontinued Operations
Reconciliation of Contribution (Charge) to Earnings From Segment to Net Earnings [Line Items]
Net contribution to earnings	$ 0	$ 0	$ 20