Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 22,748	$ 19,534	$ 17,286
Other comprehensive income/(loss)	(135)	(4)	51
Ending balance	22,761	22,748	19,534
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(196)	(192)	(243)
Other comprehensive income/(loss)	(140)	0	54
Income tax benefit/(expense)	5	(4)	(3)
Other comprehensive income/(loss)	(135)	(4)	51
Ending balance	(331)	(196)	(192)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(150)	(134)	(177)
Other comprehensive income/(loss)	(130)	(16)	43
Income tax benefit/(expense)	2	0	0
Other comprehensive income/(loss)	(128)	(16)	43
Ending balance	(278)	(150)	(134)
Comprehensive income from equity method investment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	2	1	1
Other comprehensive income/(loss)	0	1	0
Income tax benefit/(expense)	0	0	0
Other comprehensive income/(loss)	0	1	0
Ending balance	2	2	1
Employee benefit plans adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(48)	(59)	(67)
Other comprehensive income/(loss)	(10)	15	11
Income tax benefit/(expense)	3	(4)	(3)
Other comprehensive income/(loss)	(7)	11	8
Ending balance	$ (55)	$ (48)	$ (59)