Benefit Plans - Schedule of Share Based Payment Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	$ 48	$ 47	$ 102	$ 97
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	12	13	28	25
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization \| Programming and content
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	9	10	22	19
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization \| Customer service and billing
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	2	2	3	3
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization \| Transmission
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	1	1	3	3
Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	15	14	32	28
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	9	8	19	18
Income Statement Location [Axis]: us-gaap:SellingAndMarketingExpense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	$ 12	$ 12	$ 23	$ 26