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Property and Equipment - Schedule of Construction in Progress (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Construction in progress | $ 758 | $ 988
Satellite system |  |
Property, Plant and Equipment [Line Items] |  |
Construction in progress | 401 | 751
Capitalized software and hardware |  |
Property, Plant and Equipment [Line Items] |  |
Construction in progress | 294 | 197
Other |  |
Property, Plant and Equipment [Line Items] |  |
Construction in progress | $ 63 | $ 40

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