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Intangible Assets - Schedules (Details) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023 | Dec. 31, 2024
Licenses |  |  |
Loss on impairment of intangible assets | $ (136) | $ 0 |
Finite-Lived Intangible Assets |  |  |
Gross Amount |  | 290 | $ 290
Accumulated Amortization |  | (106) | (128)
Net Amount |  | 183 | 161
Franchise rights |  |  |
Finite-Lived Intangible Assets |  |  |
Gross Amount |  | 255 | 255
Accumulated Amortization |  | (102) | (121)
Net Amount |  | 153 | 134
Internet protocol addresses |  |  |
Finite-Lived Intangible Assets |  |  |
Gross Amount |  | 34 | 34
Accumulated Amortization |  | (4) | (7)
Net Amount |  | 29 | 26
Other |  |  |
Finite-Lived Intangible Assets |  |  |
Gross Amount |  | 1 | 1
Accumulated Amortization |  | 0 | 0
Net Amount |  | $ 1 | $ 1

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