(Depreciation, Amortization And Cost of Timber Harvested) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Depreciation and Amortization		$ 1,097	$ 1,091	$ 1,072
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Depreciation and Amortization		829	813	799
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Depreciation and Amortization		265	274	262
Corporate and other
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1]	$ 3	$ 4	$ 11

[1] Includes $0 million in 2021, $0 million in 2020 and $7 million in 2019 from previously divested businesses.