Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (754)	$ (670)	$ (762)	$ (551)
Gains (losses) on foreign currency translation	(217)	62	(198)	(32)
Less: Tax provision/(benefit)	31	(7)	42	18
Net gains (losses) on foreign currency translation	(248)	69	(240)	(50)
Other comprehensive income (loss), net of tax	(248)	69	(240)	(50)
Balance at end of period	(1,002)	(601)	(1,002)	(601)
Balance at beginning of period	4	(33)	(12)	(44)
Gains (losses) deferred	342	(37)	371	82
Less: Tax provision/(benefit)	57	(9)	63	16
Net gains (losses) deferred	285	(28)	308	66
(Gains) losses reclassified to earnings	(335)	38	(345)	(66)
Less: Tax (provision)/benefit	(57)	9	(60)	(12)
Net (gains) losses reclassified to earnings	(278)	29	(285)	(54)
Other comprehensive income (loss), net of tax	7	1	23	12
Balance at end of period	11	(32)	11	(32)
Total Accumulated other comprehensive income (loss) at end of period	$ (991)	$ (633)	$ (991)	$ (633)	$ (774)