CONSOLIDATED STATEMENTS OF CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance, beginning of period	$ 11,190	$ 14,485	$ 13,319
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total period activity	65	15	97
Balance, end of period	14,177	11,190	14,485
Derivative Instruments
Balance, beginning of period	(258)	(259)	(177)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Reclassification adjustments	31	11	9
Unrealized gain/(loss) on hedges	19	(10)	(91)
Total period activity	50	1	(82)
Balance, end of period	(208)	(258)	(259)
Translation Adjustments
Balance, beginning of period	(657)	(674)	(853)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Currency translation adjustments	15	17	179
Total period activity	15	17	179
Balance, end of period	(642)	(657)	(674)
Other
Balance, beginning of period	(3)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other		(3)
Total period activity		(3)
Balance, end of period	(3)	(3)
Total
Balance, beginning of period	(918)	(933)	(1,030)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Reclassification adjustments	31	11	9
Unrealized gain/(loss) on hedges	19	(10)	(91)
Currency translation adjustments	15	17	179
Other		(3)
Total period activity	65	15	97
Balance, end of period	$ (853)	$ (918)	$ (933)