Stockholders' Equity - Accumulated other comprehensive income/ (loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (730)
Other comprehensive gain/(loss), net of tax	(34)	$ (4)	$ (97)
Ending balance	(764)	(730)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,544	3,773	2,708	$ 2,185
Accumulated Other Comprehensive (Loss)/ Income
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive gain/(loss), net of tax	(34)	(4)	(97)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(764)	(730)	(726)	(629)
Derivatives Net Unrealized Losses
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive gain/(loss), net of tax	19	(15)	4
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4	(15)	0	$ (4)
Accumulated Other Comprehensive Income (Loss), Derivative Qualifying as Hedge, Excluded Component, Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(37)	21	9
Other comprehensive gain/(loss), net of tax	42	(58)	12
Ending balance	5	(37)	21
Currency Translation Adjustment, Net Unrealized Losses
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(655)	(724)	(620)
Other comprehensive gain/(loss), net of tax	(101)	69	(104)
Ending balance	(756)	(655)	(724)
Benefit Plans, Actuarial Gains/ (Losses)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(23)	(23)	(14)
Other comprehensive gain/(loss), net of tax	6	0	(9)
Ending balance	$ (17)	$ (23)	$ (23)