(Information By Industry Segment, External Sales By Major Product) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net Sales		$ 19,363	$ 17,565	$ 18,317
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Net Sales		16,276	14,851	15,192
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Net Sales		2,730	2,394	2,675
Corporate and other | Corporate and Other
Segment Reporting Information [Line Items]
Net Sales	[1]	$ 357	$ 320	$ 450

[1] Includes $44 million in 2021, $56 million in 2020 and $161 million in 2019 from previously divested businesses.