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Transactions with DIRECTV (Details) - USD ($) $ in Millions	3 Months Ended
Transactions with DIRECTV (Details) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Related Party Transaction [Line Items]
Equity in net income of affiliates	$ 538	$ 521
Investments in and Advances to Equity Affiliates	2,810		$ 3,533
Proceeds from (Repayments of) Related Party Debt	130	294
Segment Reporting Information Operations And Support Expenses	19,506	19,713
DTV-related retained costs
Related Party Transaction [Line Items]
Segment Reporting Information Operations And Support Expenses	169
DIRECTV
Related Party Transaction [Line Items]
Equity in net income of affiliates	534	522
Investments in and Advances to Equity Affiliates	$ 2,142
Network Transport For Products and Sales Services Under Commercial Arrangements Period	5 years
Operational Support Services Agreement Period	3 years
Accounts Receivable, Related Parties	$ 320
Accounts Payable, Related Parties	80
DIRECTV \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Proceeds from Equity Method Investment, Distribution	1,308	1,837
Related Party Costs	240
Operating Activities [Member] \| DIRECTV \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Proceeds from Equity Method Investment, Distribution	534	522
Investing Activities [Member] \| DIRECTV \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Proceeds from Equity Method Investment, Distribution	$ 774	$ 1,315