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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