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Employee Benefits - Pension Plans with Benefit Obligations in Excess of Plan Assets (Details) - Pension Plans - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Plans with Projected Benefit Obligations in Excess of Plan Assets    
Projected benefit obligation $ 564 $ 571
Fair value of plan assets 0 0
Plans with Accumulated Benefit Obligations in Excess of Plan Assets    
Accumulated benefit obligation 525 530
Fair value of plan assets $ 0 $ 0