Income Taxes (Schedule of Reconciliation of Unrecognized Tax Benefits Included in Uncertain Tax Positions) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Activity Related To Uncertain Tax Positions [Roll Forward]
As of the beginning of the year		$ 275	$ 218	$ 165
Increases in tax positions for the current year		10	8	33
Increases in tax positions for prior years		9	102	28
Decreases in tax positions for prior years		(35)	(45)	(11)
Increases (decreases) due to settlements		(35)	(8)	(3)
As of the end of the year		224	275	218
Total uncertain tax positions that if recognized would impact the effective tax rate		244	274	224
Total amount of interest expense (benefit) and penalties recognized in the consolidated statements of operations(1)	[1]	22	10	2
Total amount of interest expense and penalties recognized in the consolidated balance sheets		$ 71	$ 59	$ 52

[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.