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Nature of Operations and Basis of Presentation - Narrative (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 USD ($) segment | Dec. 31, 2023 USD ($)
Business Acquisition [Line Items] |  |
Number of reportable segments | segment | 5 |
Restricted cash | $ 1 | $ 1
Contract asset | 77 | 75
Unearned revenue | 1,400 |
Capitalized contract costs | $ 234 | $ 234
Amortization period of capitalized contract cost | 5 years |
OSTTRA | Corporate Joint Venture |  |
Business Acquisition [Line Items] |  |
Investment in joint venture percentage | 50.00% |
Noncontrolling interest ownership by noncontrolling owners percentage | 50.00% |

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