(Changes In Goodwill Balances) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 3,115	$ 3,114
Currency translation and other (a)	[1]	(8)	6
Goodwill additions/reductions		23	(5)
Goodwill		3,478	3,463		$ 3,462
Accumulated impairment losses		(348)	(348)		(348)
Goodwill, ending balance		3,130	3,115
Industrial Packaging
Goodwill [Roll Forward]
Goodwill, beginning balance		3,115	3,114
Currency translation and other (a)	[1]	(8)	6
Goodwill additions/reductions	[2]	23	(5)	[3]
Goodwill		3,426	3,411		3,410
Accumulated impairment losses		(296)	(296)		(296)
Goodwill, ending balance		3,130	3,115
Global Cellulose Fibers
Goodwill [Roll Forward]
Goodwill, beginning balance		0	0
Currency translation and other (a)	[1]	0	0
Goodwill additions/reductions		0	0
Goodwill		52	52		52
Accumulated impairment losses		(52)	(52)		$ (52)
Goodwill, ending balance		$ 0	$ 0

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

[2] Reflects the goodwill for the acquisitions and divestitures of Industrial Packaging box plants in EMEA.

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