(Information By Industry Segment, External Sales By Major Product) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net sales	[1],[2]	$ 18,916	$ 21,161	$ 19,363
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Net sales		15,596	17,451	16,326
Operating Segments [Member] | Industrial Packaging | External Customers
Segment Reporting Information [Line Items]
Net sales		15,596	17,441	16,276
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Net sales		2,890	3,227	2,732
Operating Segments [Member] | Global Cellulose Fibers | External Customers
Segment Reporting Information [Line Items]
Net sales		2,883	3,219	2,730
Corporate and other
Segment Reporting Information [Line Items]
Net sales		(95)	(132)	(126)
Corporate and other | Industrial Packaging
Segment Reporting Information [Line Items]
Net sales		(95)	(132)	(126)
Corporate and other | Corporate and Other | External Customers
Segment Reporting Information [Line Items]
Net sales	[3]	$ 437	$ 501	$ 357

[1] Net sales are attributed to countries based on the location of the seller.

[2] Net sales are attributed to countries based on the location of the reportable segment making the sale.

[3] Includes $44 million in 2021 from previously divested businesses.