Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 22,761	$ 22,748	$ 19,534
Other comprehensive income/(loss)	34	(140)	0
Income tax benefit/(expense)	3	5	(4)
Other comprehensive income/(loss)	37	(135)	(4)
Ending balance	25,786	22,761	22,748
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(331)	(196)	(192)
Other comprehensive income/(loss)	37	(135)	(4)
Ending balance	(294)	(331)	(196)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(278)	(150)	(134)
Other comprehensive income/(loss)	49	(130)	(16)
Income tax benefit/(expense)	(1)	2	0
Other comprehensive income/(loss)	48	(128)	(16)
Ending balance	(230)	(278)	(150)
Comprehensive income from equity method investment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	2	2	1
Other comprehensive income/(loss)	0	0	1
Income tax benefit/(expense)	0	0	0
Other comprehensive income/(loss)	0	0	1
Ending balance	2	2	2
Employee benefit plans adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(55)	(48)	(59)
Other comprehensive income/(loss)	(15)	(10)	15
Income tax benefit/(expense)	4	3	(4)
Other comprehensive income/(loss)	(11)	(7)	11
Ending balance	$ (66)	$ (55)	$ (48)