Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Deferred income tax provision (benefit) for the effect of changes in non-U.S. and U.S. state tax rates	$ (8)	$ (2)	$ (44)
Income tax payments, net of refunds	601	162	$ 349
Accrual for the payment of estimated interest and penalties associated with unrecognized tax benefits	21	16
Tax positions for which the ultimate benefits are highly certain, but for which there is uncertainty about the timing of such benefits	3
Forestlands, related installment sales, and investment in subsidiary	(1,279)	$ (1,351)
Undistributed earnings of foreign subsidiaries	2,300
Two Thousand And Six Financing Entities [Member]
Income Tax Contingency [Line Items]
Deferred tax liabilities, other	813
Two Thousand Seven Monetized Notes [Member]
Income Tax Contingency [Line Items]
Deferred tax liabilities, other	487
Two Thousand Seven Monetized Notes [Member]
Income Tax Contingency [Line Items]
Deferred tax liabilities, other	$ 487