(Changes In Goodwill Balances) (Details) - USD ($) $ in Millions		3 Months Ended				12 Months Ended
		Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance					$ 3,130	$ 3,130	$ 3,115
Currency translation and other (a)	[1]					(13)	(8)
Goodwill, Impairment Loss						76
Goodwill additions/reductions							23
Goodwill		$ 3,465				3,465	3,478	$ 3,463
Accumulated impairment losses		(424)				(424)	(348)	(348)
Goodwill, ending balance		3,041				3,041	3,130
EMEA Industrial Packaging
Goodwill [Roll Forward]
Goodwill, Impairment Loss		76	$ 0	$ 0	0	76
Industrial Packaging
Goodwill [Roll Forward]
Goodwill, beginning balance					3,130	3,130	3,115
Currency translation and other (a)	[1]					(13)	(8)
Goodwill, Impairment Loss	[2]					76
Goodwill additions/reductions	[3]						23
Goodwill		3,413				3,413	3,426	3,411
Accumulated impairment losses		(372)				(372)	(296)	(296)
Goodwill, ending balance		3,041				3,041	3,130
Global Cellulose Fibers
Goodwill [Roll Forward]
Goodwill, beginning balance					$ 0	0	0
Currency translation and other (a)	[1]					0	0
Goodwill, Impairment Loss						0
Goodwill additions/reductions							0
Goodwill		52				52	52	52
Accumulated impairment losses		(52)				(52)	(52)	$ (52)
Goodwill, ending balance		$ 0				$ 0	$ 0

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

[2] Reflects the impairment of the EMEA Industrial Packaging reporting unit.

[3] Reflects the goodwill for the acquisitions of EMEA Industrial Packaging box plants.