v3.25.4
Segment Reporting and Geographic Information - Selected Financial Data for Each Reportable Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]        
Total Adjusted EBITDA   $ 1,272 $ 1,266 $ 996
Debt extinguishment loss $ 5 6 0 25
Interest expense   219 223 168
Income tax provision   121 86 68
Depreciation and amortization expense   521 490 432
Pre-Con-way acquisition environmental matter   35 0 0
Legal matters   (13) 0 8
Transaction and integration costs   8 53 58
Restructuring costs   59 27 44
Other   0 0 1
Income from continuing operations   316 387 192
Operating Segments | North American LTL        
Segment Reporting Information [Line Items]        
Total Adjusted EBITDA   1,142 1,115 864
Depreciation and amortization expense   381 346 291
Operating Segments | European Transportation        
Segment Reporting Information [Line Items]        
Total Adjusted EBITDA   147 158 163
Depreciation and amortization expense   136 140 136
Corporate        
Segment Reporting Information [Line Items]        
Total Adjusted EBITDA   (16) (7) (31)
Depreciation and amortization expense   $ 4 $ 4 $ 5