Revenue from Contracts with Customers - Contract Assets Rollforward (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Capitalized Cost To Fulfill Customer Contracts
Change in Capitalized Contract Costs
Balance at beginning of period	$ 370	$ 355
Additions	380	362
Amortization	(478)	(462)
Impairment	0	0
Foreign currency translation and other	(3)	2
Balance at end of period	269	257
Capitalized Cost To Obtain Customer Contracts
Change in Capitalized Contract Costs
Balance at beginning of period	195	185
Additions	14	10
Amortization	(13)	(12)
Impairment	0	0
Foreign currency translation and other	(2)	0
Balance at end of period	$ 194	$ 183