v3.26.1
Retirement Plans - Schedule of Components of Net Periodic Benefit Cost (Details) - Pension Plan - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Components of net periodic benefit cost        
Interest cost $ 7 $ 8 $ 15 $ 16
Expected return on plan assets (8) (8) (16) (16)
Amortization of unrecognized:        
Actuarial (gain) loss 3 3 6 6
Net periodic benefit cost $ 2 $ 3 $ 5 $ 6