Equity Method Investments (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2024	Sep. 29, 2024	Jun. 30, 2024	Jul. 31, 2021
Schedule of Equity Method Investments [Line Items]
Investments in Equity Method Investees	$ 295	$ 295	$ 1,251	$ 3,533
Equity in net income of affiliates		1,989	1,675	1,791
Distributions from equity method investment		2,033	1,668
SKY Mexico | Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Economic interest in common units								41.30%
DIRECTV
Schedule of Equity Method Investments [Line Items]
Equity Method Investments, Fair Value Disclosure									$ 6,852
DIRECTV | Equity Method Investee [Member]
Schedule of Equity Method Investments [Line Items]
Consideration to be received from sale of interest in DIRECTV							$ 7,600
Proceeds from equity method investment	1,695	2,955	3,715	4,457
Investments in Equity Method Investees	0	0	877			$ 0
Equity in net income of affiliates		2,027	1,666	1,808
Distributions from equity method investment		2,027	1,666	1,808
DIRECTV | Junior Preferred Interests
Schedule of Equity Method Investments [Line Items]
Equity method investment, preferred interest			4,250
Distributions from equity method investment			$ 4,250
DIRECTV | Common Stock
Schedule of Equity Method Investments [Line Items]
Interest in newly formed company, additional distribution preference	$ 1,370	$ 1,370		$ 4,200
Economic interest in common units held after disposal of business unit		70.00%
DIRECTV | Notes receivable | Equity Method Investee [Member]
Schedule of Equity Method Investments [Line Items]
Consideration to be received from sale of interest in DIRECTV							2,550
DIRECTV | Dividends | Equity Method Investee [Member]
Schedule of Equity Method Investments [Line Items]
Consideration to be received from sale of interest in DIRECTV							$ 1,150
BlackRock, Inc. | Equity Method Investments | Co-venturer [Member]
Schedule of Equity Method Investments [Line Items]
Economic interest in common units	50.00%	50.00%
TPG Capital | DIRECTV
Schedule of Equity Method Investments [Line Items]
Economic interest in common units	30.00%	30.00%
TPG Capital | DIRECTV | Senior Preferred Interests
Schedule of Equity Method Investments [Line Items]
Equity method investment, preferred interest					$ 1,800
Distributions from equity method investment					$ 1,800