v3.26.1
Commitments and Contingencies (Tables)
 3 Months Ended
Mar. 31, 2026
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Personal Injury Liability Activity
Our personal injury liability activity was as follows:
Millions, for the three months ended March 31,20262025
Beginning balance$413 $379 
Current year accruals29 26 
Changes in estimates for prior years(9)2 
Payments(27)(42)
Ending balance at March 31,$406 $365 
Current portion, ending balance at March 31,$95 $117 
Schedule of Environmental Liability Activity
Our environmental liability activity was as follows:
Millions, for the three months ended March 31,20262025
Beginning balance$259 $268 
Accruals22 17 
Payments(19)(21)
Ending balance at March 31,$262 $264 
Current portion, ending balance at March 31,$62 $76