Goodwill And Other Intangibles (Changes In Goodwill Balances) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 3,411		$ 3,364
Currency translation and other (a)	[1]	(35)		11
Additions/reductions		(2)		36
Goodwill		5,547		5,584		$ 5,537
Accumulated impairment losses		(2,173)		(2,173)		(2,173)
Goodwill, ending balance		3,374		3,411
Industrial Packaging
Goodwill [Roll Forward]
Goodwill, beginning balance		3,086		3,079
Currency translation and other (a)	[1]	(1)		3
Additions/reductions		(2)	[2]	4	[3]
Goodwill		3,379		3,382		3,375
Accumulated impairment losses		(296)		(296)		(296)
Goodwill, ending balance		3,083		3,086
Global Cellulose Fibers
Goodwill [Roll Forward]
Goodwill, beginning balance		52		19
Currency translation and other (a)	[1]	0		0
Additions/reductions		0		33	[4]
Goodwill		52		52		19
Accumulated impairment losses		0		0		0
Goodwill, ending balance		52		52
Printing Papers
Goodwill [Roll Forward]
Goodwill, beginning balance		273		266
Currency translation and other (a)	[1]	(34)		8
Additions/reductions		0		(1)
Goodwill		2,116		2,150		2,143
Accumulated impairment losses		(1,877)		(1,877)		$ (1,877)
Goodwill, ending balance		$ 239		$ 273

[1] Represents the effects of foreign currency translations and reclassifications.

[2] Reflects a reduction from tax benefits generated by the deduction of goodwill amortization for tax purposes in the U.S.

[3] Reflects the acquisition of the Moroccan box plant

[4] Reflects the acquisition and purchase price adjustments of the Weyerhaeuser pulp business.