Leases (Components of our right-of-use assets) (Details) - USD ($)	Sep. 30, 2024	Mar. 31, 2024
Finance Lease [Abstract]
Buildings and Improvements	$ 82,385	$ 79,317,000
Furniture and equipment	61	61,000
Rental trailers and other rental equipment	96,006	114,607,000
Rental trucks	436,576	607,521,000
Right-of-use assets, gross	615,028	801,506,000
Less: Accumulated depreciation	(354,916)	(458,489,000)
Right of use assets, net	260,112	343,017,000
Finance Lease [Member]
Finance Lease [Abstract]
Furniture and equipment	61	61,000
Rental trailers and other rental equipment	96,006	114,607,000
Rental trucks	436,576	607,521,000
Right-of-use assets, gross	532,643	722,189,000
Less: Accumulated depreciation	(323,839)	(432,884,000)
Right of use assets, net	208,804	289,305,000
Operating Lease [Member]
Finance Lease [Abstract]
Buildings and Improvements	82,385	79,317,000
Right-of-use assets, gross	82,385	79,317,000
Less: Accumulated depreciation	(31,077)	(25,605,000)
Right of use assets, net	$ 51,308	$ 53,712,000