v3.25.1
Purchase Commitments (Details)
$ in Millions
Mar. 31, 2025
USD ($)
Capital Addition Purchase Commitments Total Revenue Equipment [Member]  
Long-term Purchase Commitment [Line Items]  
Purchase Obligation, Future Minimum Payments, Remainder of Fiscal Year $ 529.6
Purchase Obligation, to be Paid, Year One 529.6
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 475.5
Capital Addition Purchase Commitments Non revenue equipment [Member]  
Long-term Purchase Commitment [Line Items]  
Purchase Obligation, Future Minimum Payments, Remainder of Fiscal Year 86.9
Purchase Obligation, to be Paid, Year One 86.9
Purchase Obligation, Due in Second and Third Year 58.2
Purchase Obligation, Due in Fourth and Fifth Year 8.6
Purchase Obligation, Due after Fifth Year $ 0.0