Income Taxes (Schedule of Reconciliation of Unrecognized Tax Benefits Included in Uncertain Tax Positions) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Activity Related To Uncertain Tax Positions [Roll Forward]
As of the beginning of the year		$ 218	$ 165	$ 134
Increases in tax positions for the current year		8	33	18
Increases in tax positions for prior years		102	28	26
Decreases in tax positions for prior years		(45)	(11)	(13)
Increases (decreases) due to settlements		(8)
Increases (decreases) due to settlements			3	0
As of the end of the year		275	218	165
Total uncertain tax positions that if recognized would impact the effective tax rate		274	224	182
Total amount of interest expense (benefit) and penalties recognized in the consolidated statements of operations(1)	[1]	10	2	6
Total amount of interest expense and penalties recognized in the consolidated balance sheets		59	$ 52	$ 54
Tax Adjustments, Settlements, and Unusual Provisions		$ 34

[1] This amount reflects interest on uncertain tax positions and release of tax positions due to changes in assessment, statute lapses or audit closures that were reflected in the consolidated statements of operations.