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Benefit Plans - Schedule of Share Based Payment Expense (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based payment expense | $ 42 | $ 58 | $ 140 | $ 154
Programming and content |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based payment expense | 9 | 9 | 28 | 26
Customer service and billing |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based payment expense | 1 | 1 | 4 | 4
Transmission |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based payment expense | 1 | 1 | 5 | 4
Sales and marketing |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based payment expense | 10 | 11 | 36 | 34
Product and technology |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based payment expense | 8 | 11 | 26 | 34
General and administrative |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based payment expense | $ 13 | $ 25 | $ 41 | $ 52

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