Financial Information By Industry Segment And Geographic Area (Information By Industry Segment, (Depreciation, Amortization And Cost of Timber Harvested) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1],[2]	$ 1,328	$ 1,343	$ 1,124
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1],[2]	803	815	760
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1],[2]	262	264	110
Operating Segments [Member] | Printing Papers
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1],[2]	258	254	242
Corporate and other
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1],[2],[3]	$ 5	$ 10	$ 12

[1] Excludes accelerated depreciation related to the closure and/or repurposing of mills in 2016.

[2] Prior years recast to reflect current methodology for allocation of Corporate depreciation and amortization to the business segments. There is no change to segment operating profit.

[3] Includes $0 million in 2018, $1 million in 2017 and $2 million in 2016, from previously divested businesses.