Accumulated Other Comprehensive Income - Changes in Accumulated Balances of Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss), Tax
Beginning balance	$ 21	$ 12
Other comprehensive income (loss) before reclassifications	(2)	8
Less: Amount of gain (loss) reclassified from AOCI	(7)	(1)
Net current period other comprehensive income (loss)	5	9
Ending balance	26	21
Accumulated Other Comprehensive Income (Loss), Net of Tax
Beginning balance	5,153
Other comprehensive income (loss) before reclassifications	(3)	(50)
Less: Amount of gain (loss) reclassified from AOCI	25	6
Other comprehensive income (loss), net of tax	(28)	(56)
Ending balance	5,387	7,054
Unrealized Gains (Losses) on Derivative Instruments
Accumulated Other Comprehensive Income (Loss), Before Tax
Beginning balance	114	65
Other comprehensive income (loss) before reclassifications	(21)	27
Less: Amount of gain (loss) reclassified from AOCI	32	7
Net current period other comprehensive income (loss)	(53)	20
Ending balance	61	85
Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss), Before Tax
Beginning balance	(98)	(7)
Other comprehensive income (loss) before reclassifications	19	(51)
Less: Amount of gain (loss) reclassified from AOCI	0	0
Net current period other comprehensive income (loss)	19	(51)
Ending balance	(79)	(58)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Before Tax
Beginning balance	222	328
Other comprehensive income (loss) before reclassifications	1	(34)
Less: Amount of gain (loss) reclassified from AOCI	0	0
Net current period other comprehensive income (loss)	1	(34)
Ending balance	223	294
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax
Beginning balance	259	398
Ending balance	$ 231	$ 342