Leases (Components of our right-of-use assets) (Details) - USD ($)	Dec. 31, 2024	Mar. 31, 2024
Finance Lease [Abstract]
Buildings and Improvements	$ 82,384	$ 79,317,000
Furniture and equipment	61	61,000
Rental trailers and other rental equipment	66,083	114,607,000
Rental trucks	388,528	607,521,000
Right-of-use assets, gross	537,056	801,506,000
Less: Accumulated depreciation	(319,739)	(458,489,000)
Right of use assets, net	217,317	343,017,000
Finance Lease [Member]
Finance Lease [Abstract]
Furniture and equipment	61	61,000
Rental trailers and other rental equipment	66,083	114,607,000
Rental trucks	388,528	607,521,000
Right-of-use assets, gross	454,672	722,189,000
Less: Accumulated depreciation	(285,855)	(432,884,000)
Right of use assets, net	168,817	289,305,000
Operating Lease [Member]
Finance Lease [Abstract]
Buildings and Improvements	82,384	79,317,000
Right-of-use assets, gross	82,384	79,317,000
Less: Accumulated depreciation	(33,884)	(25,605,000)
Right of use assets, net	$ 48,500	$ 53,712,000