v3.25.1
Pension and Other Postretirement Benefits - Schedule of Net Periodic Benefit Cost Components (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Pension Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 3 $ 5
Interest cost 21 21
Expected return on plan assets (22) (24)
Amortization of prior service credit (1) (1)
Amortization of actuarial loss 5 6
Net periodic benefit cost (credit) 6 7
Other Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0 1
Interest cost 3 3
Expected return on plan assets (3) (3)
Amortization of prior service credit (8) (8)
Net periodic benefit cost (credit) $ (8) $ (7)