(Depreciation, Amortization And Cost of Timber Harvested) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Depreciation and Amortization	$ 1,432	$ 1,040	$ 1,097
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Depreciation and Amortization	1,144	783	829
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Depreciation and Amortization	286	255	265
Corporate and other
Segment Reporting Information [Line Items]
Depreciation and Amortization	$ 2	$ 2	$ 3