Transactions with DIRECTV (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Related Party Transaction [Line Items]
Equity in net income of affiliates	$ 420	$ 392	$ 1,338	$ 1,417
Investments in and Advances to Equity Affiliates	1,847		1,847		$ 3,533
Proceeds from (Repayments of) Related Party Debt			130	1,070
Related Party Costs	160		580
Segment Reporting Information Operations And Support Expenses	19,863	$ 19,517	58,205	59,467
Accounts Receivable, Related Parties	8,962		8,962		$ 11,466
DIRECTV
Related Party Transaction [Line Items]
Equity in net income of affiliates			1,334	1,429
Investments in and Advances to Equity Affiliates	$ 1,476		$ 1,476
Network Transport For Products and Sales Services Under Commercial Arrangements Period	5 years		5 years
Accounts Receivable, Related Parties	$ 245		$ 245
Accounts Payable, Related Parties	$ 40		40
DIRECTV | Equity Method Investee [Member]
Related Party Transaction [Line Items]
Proceeds from Equity Method Investment, Distribution			2,781	3,634
Operating Activities [Member] | DIRECTV | Equity Method Investee [Member]
Related Party Transaction [Line Items]
Proceeds from Equity Method Investment, Distribution			1,334	1,429
Investing Activities [Member] | DIRECTV | Equity Method Investee [Member]
Related Party Transaction [Line Items]
Proceeds from Equity Method Investment, Distribution			$ 1,447	$ 2,205