v3.26.1
Segment Reporting - Information on Reportable Segment (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2025
Segment Reporting, Revenue Reconciling Item [Line Items]          
Revenue $ 1,774 $ 1,419 $ 3,199 $ 2,852  
Cost of transportation and services (exclusive of depreciation and amortization) 1,472 1,118 2,643 2,271  
Direct operating expense (exclusive of depreciation and amortization) 53 47 103 95  
Sales, general and administrative expense 211 214 408 424  
Depreciation and amortization expense 26 30 52 62  
Transaction and integration costs 4 7 6 13  
Other expense 0 (2) (1) (2)  
Debt extinguishment loss 0 0 11 0 $ 0
Interest expense, net 9 8 18 17  
Loss before income taxes (8) (10) (57) (49)  
Reportable Segment          
Segment Reporting, Revenue Reconciling Item [Line Items]          
Depreciation and amortization expense 26 30 52 62  
Transaction and integration costs 4 7 6 13  
Restructuring and other costs 9 3 16 17  
Other expense 1 2 2 2  
Debt extinguishment loss 0 0 11 0  
Interest expense, net 9 8 18 17  
Loss before income taxes (8) (10) (57) (49)  
Reportable Segment | Operating Segments          
Segment Reporting, Revenue Reconciling Item [Line Items]          
Revenue 1,774 1,419 3,199 2,852  
Cost of transportation and services (exclusive of depreciation and amortization) 1,472 1,118 2,643 2,271  
Direct operating expense (exclusive of depreciation and amortization) 53 47 103 95  
Sales, general and administrative expense 198 202 385 405  
Segment adjusted EBITDA 51 52 68 81  
Reportable Segment | Segment Reporting, Reconciling Item, Corporate Nonsegment          
Segment Reporting, Revenue Reconciling Item [Line Items]          
Unallocated corporate expenses $ 10 $ 12 $ 20 $ 19