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Employee Benefit Plans - Components of Net Periodic Benefit Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Retirement Benefits [Abstract]      
Interest cost $ 16 $ 20 $ 9
Expected return on plan assets (23) (24) (10)
Net periodic benefit income $ (7) $ (4) $ (1)