Nature of Operations and Basis of Presentation - Narrative (Details) $ in Millions	9 Months Ended
Sep. 30, 2024 USD ($) segment	Dec. 31, 2023 USD ($)
Business Acquisition [Line Items]
Number of reportable segments \| segment	5
Restricted cash	$ 1	$ 1
Contract asset	82	75
Unearned revenue	3,000
Capitalized contract costs	$ 274	$ 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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