v3.25.4
REVENUE - Disaggregation of Revenue by Geographical Market and Industry (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]      
Revenues $ 12,665 $ 12,636 $ 11,783
United States      
Disaggregation of Revenue [Line Items]      
Revenues 11,782 11,773 10,932
Canada      
Disaggregation of Revenue [Line Items]      
Revenues 548 538 538
Mexico      
Disaggregation of Revenue [Line Items]      
Revenues 335 325 313
SCS      
Disaggregation of Revenue [Line Items]      
Revenues 5,459 5,300 4,875
Operating Segments | FMS      
Disaggregation of Revenue [Line Items]      
Revenues 5,845 5,888 5,930
Operating Segments | FMS | United States      
Disaggregation of Revenue [Line Items]      
Revenues 5,548 5,585 5,616
Operating Segments | FMS | Canada      
Disaggregation of Revenue [Line Items]      
Revenues 297 303 314
Operating Segments | FMS | Mexico      
Disaggregation of Revenue [Line Items]      
Revenues 0 0 0
Operating Segments | SCS      
Disaggregation of Revenue [Line Items]      
Revenues 5,459 5,300 4,875
Operating Segments | SCS | United States      
Disaggregation of Revenue [Line Items]      
Revenues 4,830 4,697 4,295
Operating Segments | SCS | Canada      
Disaggregation of Revenue [Line Items]      
Revenues 294 278 267
Operating Segments | SCS | Mexico      
Disaggregation of Revenue [Line Items]      
Revenues 335 325 313
Operating Segments | DTS      
Disaggregation of Revenue [Line Items]      
Revenues 2,343 2,446 1,785
Operating Segments | DTS | United States      
Disaggregation of Revenue [Line Items]      
Revenues 2,343 2,446 1,785
Operating Segments | DTS | Canada      
Disaggregation of Revenue [Line Items]      
Revenues 0 0 0
Operating Segments | DTS | Mexico      
Disaggregation of Revenue [Line Items]      
Revenues 0 0 0
Eliminations      
Disaggregation of Revenue [Line Items]      
Revenues (982) (998) (807)
Eliminations | United States      
Disaggregation of Revenue [Line Items]      
Revenues (939) (955) (764)
Eliminations | Canada      
Disaggregation of Revenue [Line Items]      
Revenues (43) (43) (43)
Eliminations | Mexico      
Disaggregation of Revenue [Line Items]      
Revenues $ 0 $ 0 $ 0