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Employee Benefits - Schedule of Employer Contributions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company’s benefit pension plans | $ 9 | $ 10 | $ 40 | $ 50
U.K. |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company’s benefit pension plans | 1 | 1 | 3 | 6
Other |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company’s benefit pension plans | 2 | 2 | 10 | 12
U.S. |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company’s benefit pension plans | $ 6 | $ 7 | $ 27 | $ 32

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