Revenue from Contracts with Customers - Contract Costs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Capitalized Contract Cost [Abstract]
Deferred incremental costs to obtain contracts	$ 1,700,000,000		$ 1,700,000,000		$ 1,500,000,000
Average amortization period, deferred contract costs (in months)	24 months		24 months
Amortization of deferred costs	$ 358,000,000	$ 264,000,000	$ 682,000,000	$ 512,000,000
Impairment losses recognized on deferred contract cost assets	$ 0	$ 0	$ 0	$ 0