Income Taxes (Schedule of Unresolved Income Tax Positions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning uncertain tax positions	$ 457	$ 472
Increases related to current year income tax positions	13	12
Increases related to prior year income tax positions	4	5
Settlements and resolutions of income tax audits	(18)	(41)
Statute of limitations expirations and other	0	(7)
Foreign currency translation	(12)
Foreign currency translation		16
Ending uncertain tax positions	$ 444	$ 457