(Sales By Industry Segment) (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] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Net sales		2,890	3,227	2,732
Corporate & Intersegment
Segment Reporting Information [Line Items]
Net sales	[3]	$ 430	$ 483	$ 305

[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 sales of $44 million in 2021 and operating profit (losses) of $9 million in 2021, from previously divested businesses. There were no sales or operating profit (losses) from previously divested businesses in 2022 and 2023