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Transactions with DIRECTV (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 29, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Investments in and Advances to Equity Affiliates	$ 281		$ 281			$ 1,251
Accounts Receivable, Related Parties	9,068		9,068			$ 10,289
Commercial Arrangements and Transition Service Agreements \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Operations And Support Expenses	129		408
DIRECTV \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Consideration to be received from sale of interest in DIRECTV					$ 7,600
Investments in and Advances to Equity Affiliates	0		0
Accounts Receivable, Related Parties	268		268
Accounts Payable, Related Parties	52		52
Proceeds from Equity Method Investment, Distribution	$ 623	$ 896	$ 1,883	$ 2,781
DIRECTV \| Notes receivable \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Consideration to be received from sale of interest in DIRECTV					2,550
DIRECTV \| Dividends \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Consideration to be received from sale of interest in DIRECTV					$ 1,150