Revenue and Contract Costs - Schedule of Receivables from Contracts with Customers (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021
Revenue from Contract with Customer [Abstract]
Receivables	$ 11,274	$ 10,758	$ 12,029
Device payment plan agreement receivables	$ 16,648	$ 12,888	$ 10,358