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Investment in Charter Accounted for Using the Equity Method - Excess Basis Allocation (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Excess basis allocation within memo accounts |  |  |  |  |
Share of equity investment income (losses) | $ 346 | $ 326 | $ 923 | $ 892 |
Loss on dilution of investment in affiliate | (8) | (10) | (40) | (42) |
Charter |  |  |  |  |
Excess basis allocation within memo accounts |  |  |  |  |
Property and equipment, net | 307 |  | 307 |  | $ 403
Customer relationships, net | 1,827 |  | 1,827 |  | 2,049
Franchise fees | 3,843 |  | 3,843 |  | 3,843
Trademarks | 29 |  | 29 |  | 29
Goodwill | 3,934 |  | 3,934 |  | 4,049
Debt | (263) |  | (263) |  | (317)
Deferred income tax liability | (1,436) |  | (1,436) |  | (1,472)
Total | 8,241 |  | 8,241 |  | $ 8,584
Amortization of Deferred Charges | 65 | 71 | 234 | 205 |
Loss on dilution of investment in affiliate | $ (8) | $ (10) | $ (40) | $ (42) |
Charter | Customer relationships |  |  |  |  |
Excess basis allocation within memo accounts |  |  |  |  |
Remaining useful lives of customer relationships | 7 years |  | 7 years |  |
Charter | Property, plant and equipment |  |  |  |  |
Excess basis allocation within memo accounts |  |  |  |  |
Remaining useful lives of property and equipment | 3 years |  | 3 years |  |

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