v3.26.3
Purchase Commitments (Details)
$ in Millions
Sep. 30, 2026
USD ($)
Capital Addition Purchase Commitments Total Revenue Equipment [Member]  
Long-term Purchase Commitment [Line Items]  
Purchase Obligation, Future Minimum Payments, Remainder of Fiscal Year $ 146.5
Purchase Obligation, to be Paid, Year One 146.5
Purchase Obligation, to be Paid, Year Two 0.0
Purchase Obligation, to be Paid, Year Three 0.0
Purchase Obligation, Due in Fourth and Fifth Year 0.0
Purchase Obligation, Due after Fifth Year 0.0
Capital Addition Purchase Commitments of Tractors [Member]  
Long-term Purchase Commitment [Line Items]  
Purchase Obligation, Future Minimum Payments, Remainder of Fiscal Year 79.9
Capital Addition Purchase Commitments Non revenue equipment [Member]  
Long-term Purchase Commitment [Line Items]  
Purchase Obligation, Future Minimum Payments, Remainder of Fiscal Year 41.1
Purchase Obligation, to be Paid, Year One 41.1
Purchase Obligation, Due in Second and Third Year 58.8
Purchase Obligation, Due in Fourth and Fifth Year 6.5
Purchase Obligation, Due after Fifth Year $ 0.0