v3.26.3
REVENUE - Schedule of Revenue from External Customers by Geographic Areas (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Disaggregation of Revenue [Line Items]        
Total revenue $ 3,433 $ 3,171 $ 9,906 $ 9,490
United States        
Disaggregation of Revenue [Line Items]        
Total revenue 3,182 2,945 9,180 8,830
Canada        
Disaggregation of Revenue [Line Items]        
Total revenue 157 138 454 411
Mexico        
Disaggregation of Revenue [Line Items]        
Total revenue 94 88 272 249
FMS        
Disaggregation of Revenue [Line Items]        
Total revenue 1,616 1,465 4,636 4,379
SCS        
Disaggregation of Revenue [Line Items]        
Total revenue 1,504 1,380 4,337 4,077
Operating Segments | FMS        
Disaggregation of Revenue [Line Items]        
Total revenue 1,616 1,465 4,636 4,379
Operating Segments | FMS | United States        
Disaggregation of Revenue [Line Items]        
Total revenue 1,535 1,390 4,397 4,156
Operating Segments | FMS | Canada        
Disaggregation of Revenue [Line Items]        
Total revenue 81 75 239 223
Operating Segments | FMS | Mexico        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Operating Segments | SCS        
Disaggregation of Revenue [Line Items]        
Total revenue 1,504 1,380 4,337 4,077
Operating Segments | SCS | United States        
Disaggregation of Revenue [Line Items]        
Total revenue 1,320 1,219 3,810 3,608
Operating Segments | SCS | Canada        
Disaggregation of Revenue [Line Items]        
Total revenue 90 73 255 220
Operating Segments | SCS | Mexico        
Disaggregation of Revenue [Line Items]        
Total revenue 94 88 272 249
Operating Segments | DTS        
Disaggregation of Revenue [Line Items]        
Total revenue 606 570 1,758 1,778
Operating Segments | DTS | United States        
Disaggregation of Revenue [Line Items]        
Total revenue 606 570 1,758 1,778
Operating Segments | DTS | Canada        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Operating Segments | DTS | Mexico        
Disaggregation of Revenue [Line Items]        
Total revenue 0 0 0 0
Eliminations        
Disaggregation of Revenue [Line Items]        
Total revenue (293) (244) (825) (744)
Eliminations | United States        
Disaggregation of Revenue [Line Items]        
Total revenue (279) (234) (785) (712)
Eliminations | Canada        
Disaggregation of Revenue [Line Items]        
Total revenue (14) (10) (40) (32)
Eliminations | Mexico        
Disaggregation of Revenue [Line Items]        
Total revenue $ 0 $ 0 $ 0 $ 0