(Operating Profit By Industry Segment) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net sales	[1],[2]	$ 18,619	$ 18,916	$ 21,161
Cost of Goods and Services Sold		13,376	13,629	15,143
Selling and administrative expenses		1,840	1,360	1,293
Depreciation and amortization		1,305	1,432	1,040
Distribution expenses		1,475	1,575	1,783
Interest Expense, Operating		208	231	325
Income From Equity Method Investment And Income Attributable To Noncontrolling Interests		(5)	(2)	(5)
Other Noninterest Expense		44	27	34
Segment Reporting Information, Corporate Special Items		251	28	99
Segment Reporting Information, Business Special Items		122	107	76
Non-operating pension (income) expense		(42)	54	(192)
Earnings (loss) from continuing operations before income taxes and equity earnings		147	382	1,511
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	[1]	18,327	18,486	20,678
Operating Income (Loss)		725	827	1,848
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Net sales	[1]	15,534	15,596	17,451
Cost of Goods and Services Sold		10,985	11,093	12,509
Selling and administrative expenses		1,451	1,078	983
Depreciation and amortization		850	1,144	783
Distribution expenses		1,179	1,240	1,315
Segment Reporting, Other Segment Item, Amount	[3]	118	122	119
Operating Income (Loss)		951	919	1,742
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Net sales	[1]	2,793	2,890	3,227
Cost of Goods and Services Sold		1,983	2,121	2,183
Selling and administrative expenses		262	211	189
Depreciation and amortization		450	286	255
Distribution expenses		295	335	468
Segment Reporting, Other Segment Item, Amount	[3]	29	29	26
Operating Income (Loss)		(226)	(92)	106
Reportable Geographical Components [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Net sales	[2]	15,534	15,596	17,451
Reportable Geographical Components [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Net sales	[2]	2,793	2,890	3,227
Consolidation, Eliminations
Segment Reporting Information [Line Items]
Net sales	[2]	292	430	483
Corporate & Intersegment
Segment Reporting Information [Line Items]
Net sales	[1]	$ 292	$ 430	$ 483

[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] Other segment items includes Taxes other than payroll.