(Information By Industry Segment, External Sales By Major Product) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Net Sales		$ 21,161	$ 19,363	$ 17,565
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Net Sales		17,441	16,276	14,851
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Net Sales		3,219	2,730	2,394
Corporate and other | Corporate and Other
Segment Reporting Information [Line Items]
Net Sales	[1]	$ 501	$ 357	$ 320

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