Leases (Components Right Of Use Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Mar. 31, 2022
Finance Lease [Abstract]
Building and Improvements	$ 128,221	$ 136,444
Furniture and equipment	9,687	14,731
Rental trailers and rental equipment	152,294	169,514
Rental trucks	949,838	1,114,248
Right Of Use Assets Gross	1,240,040	1,434,937
less: accumulated depreciation	(706,358)	(739,731)
Right of use assets, net	533,682	695,206
Finance Lease [Member]
Finance Lease [Abstract]
Building and Improvements	0	0
Furniture and equipment	9,687	14,731
Rental trailers and rental equipment	152,294	169,514
Rental trucks	949,838	1,114,248
Right Of Use Assets Gross	1,111,819	1,298,493
less: accumulated depreciation	(637,054)	(677,669)
Right of use assets, net	474,765	620,824
Operating Lease [Member]
Finance Lease [Abstract]
Building and Improvements	128,221	136,444
Furniture and equipment	0	0
Rental trailers and rental equipment	0	0
Rental trucks	0	0
Right Of Use Assets Gross	128,221	136,444
less: accumulated depreciation	(69,304)	(62,062)
Right of use assets, net	$ 58,917	$ 74,382