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Employee Benefits - Summary of Employer Contributions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company’s benefit pension plans | $ 10 | $ 12 | $ 50 | $ 74
U.K. |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company’s benefit pension plans | 1 | 2 | 6 | 8
Other |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company’s benefit pension plans | 2 | 2 | 12 | 12
U.S. |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company’s benefit pension plans | $ 7 | $ 8 | $ 32 | $ 54

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