Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 22,861	$ 21,116	$ 22,748	$ 19,534
Other comprehensive loss	(98)	(32)	(207)	(14)
Ending balance	22,420	21,592	22,420	21,592
Accumulated other comprehensive loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(305)	(174)	(196)	(192)
Other comprehensive income/(loss)	(98)	(33)	(208)	(14)
Income tax benefit/(expense)	0	1	1	0
Other comprehensive loss	(98)	(32)	(207)	(14)
Ending balance	(403)	(206)	(403)	(206)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(259)	(117)	(150)	(134)
Other comprehensive income/(loss)	(98)	(33)	(208)	(16)
Income tax benefit/(expense)	0	1	1	1
Other comprehensive loss	(98)	(32)	(207)	(15)
Ending balance	(357)	(149)	(357)	(149)
Comprehensive income from equity method investment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	2	2	2	1
Other comprehensive income/(loss)	0	0	0	2
Income tax benefit/(expense)	0	0	0	(1)
Other comprehensive loss	0	0	0	1
Ending balance	2	2	2	2
Employee benefit plans adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(48)	(59)	(48)	(59)
Other comprehensive income/(loss)	0	0	0	0
Income tax benefit/(expense)	0	0	0	0
Other comprehensive loss	0	0	0	0
Ending balance	$ (48)	$ (59)	$ (48)	$ (59)