v3.25.4
SEGMENT REPORTING - Summary of Segment Revenue and Net Before Tax Information by Segment (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information, Revenue for Reportable Segment [Abstract]      
Revenue $ 12,665 $ 12,636 $ 11,783
Used vehicle sales, net (22) (72) (196)
Segment EBT 865 839 922
Intangible amortization expense (52) (53)  
Other items impacting comparability, net (9) (13) 21
Total 685 661 618
SCS      
Segment Reporting Information, Revenue for Reportable Segment [Abstract]      
Revenue 5,459 5,300 4,875
Operating Segments | FMS      
Segment Reporting Information, Revenue for Reportable Segment [Abstract]      
Revenue 5,845 5,888 5,930
Direct operating costs 4,548 4,638 4,651
Used vehicle sales, net (22) (72) (194)
Other segment items 818 806 808
Segment EBT 501 516 665
Operating Segments | SCS      
Segment Reporting Information, Revenue for Reportable Segment [Abstract]      
Revenue 5,459 5,300 4,875
Direct operating costs 4,853 4,735 4,420
Used vehicle sales, net 0 0 0
Other segment items 251 233 224
Segment EBT 355 332 231
Operating Segments | DTS      
Segment Reporting Information, Revenue for Reportable Segment [Abstract]      
Revenue 2,343 2,446 1,785
Direct operating costs 2,178 2,270 1,634
Used vehicle sales, net 0 0 0
Other segment items 25 51 30
Segment EBT 140 125 121
Eliminations      
Segment Reporting Information, Revenue for Reportable Segment [Abstract]      
Revenue (982) (998) (807)
Segment EBT (131) (134) (95)
Segment Reconciling Items      
Segment Reporting Information, Revenue for Reportable Segment [Abstract]      
Unallocated Central Support Services (83) (71) (72)
Intangible amortization expense (52) (53) (35)
Non-operating pension costs, net (36) (41) (40)
Other items impacting comparability, net $ (9) $ (13) $ (157)