v3.26.1
Commitments and Contingencies - Environmental Liability Activity (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Accrual for Environmental Loss Contingencies [Roll Forward]    
Beginning balance $ 259 $ 268
Accruals 41 28
Payments (39) (41)
Ending balance 261 255
Current portion, ending balance at June 30, $ 65 $ 69