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Employee Benefits - Schedule of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Retirement Benefits [Abstract]        
Service cost $ 1 $ 1 $ 1 $ 1
Interest cost 17 19 35 37
Expected return on assets (24) (25) (49) (50)
Amortization of prior service credit / actuarial loss 1 0 2 1
Net periodic benefit cost $ (5) $ (5) $ (11) $ (11)