Revenue from Contracts with Customers - Contract Assets Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Capitalized Cost To Fulfill Customer Contracts
Change in Capitalized Contract Costs
Balance at beginning of period	$ 361	$ 339
Additions	1,479	1,504
Amortization	(1,480)	(1,478)
Impairment	0	0
Foreign currency translation and other	(5)	(4)
Balance at end of period	355	361
Capitalized Cost To Obtain Customer Contracts
Change in Capitalized Contract Costs
Balance at beginning of period	179	184
Additions	56	59
Amortization	(49)	(48)
Impairment	0	0
Foreign currency translation and other	(1)	(16)
Balance at end of period	$ 185	$ 179