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Employee Benefits - Schedule of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Retirement Benefits [Abstract]        
Service cost $ 0 $ 1 $ 1 $ 1
Interest cost 18 17 35 35
Expected return on assets (24) (24) (48) (49)
Amortization of prior service credit / actuarial loss 1 1 2 2
Net periodic benefit cost $ (5) $ (5) $ (10) $ (11)