Revenue from Contracts with Customers - Schedule of Contract Assets Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Capitalized Cost To Fulfill Customer Contracts
Change in Capitalized Contract Costs
Balance at beginning of period	$ 302	$ 269	$ 424	$ 370
Additions	409	386	827	766
Amortization	(448)	(390)	(992)	(868)
Impairment	0	0	0	0
Foreign currency translation and other	10	(1)	14	(4)
Balance at end of period	273	264	273	264
Capitalized Cost To Obtain Customer Contracts
Change in Capitalized Contract Costs
Balance at beginning of period	208	194	207	195
Additions	14	18	27	32
Amortization	(40)	(14)	(53)	(27)
Impairment	0	0	0	0
Foreign currency translation and other	5	(2)	6	(4)
Balance at end of period	$ 187	$ 196	$ 187	$ 196