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Leases (Components of our right-of-use assets) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Mar. 31, 2021
--- | --- | ---
Finance Lease [Abstract] |  |
Buildings and Improvements | $ 135,174 | $ 132,901
Furniture and equipment | 22,176 | 22,316
Rental trailers and other rental equipment | 197,981 | 203,594
Rental trucks | 1,395,144 | 1,494,098
Right-of-use assets, gross | 1,750,475 | 1,852,909
Less: Accumulated depreciation | (846,231) | (883,366)
Right of use assets, net | 904,244 | 969,543
Finance Lease [Member] |  |
Finance Lease [Abstract] |  |
Buildings and Improvements | 0 | 0
Furniture and equipment | 22,176 | 22,316
Rental trailers and other rental equipment | 197,981 | 203,594
Rental trucks | 1,395,144 | 1,494,098
Right-of-use assets, gross | 1,615,301 | 1,720,008
Less: Accumulated depreciation | (800,426) | (842,970)
Right of use assets, net | 814,875 | 877,038
Operating Lease [Member] |  |
Finance Lease [Abstract] |  |
Buildings and Improvements | 135,174 | 132,901
Furniture and equipment | 0 | 0
Rental trailers and other rental equipment | 0 | 0
Rental trucks | 0 | 0
Right-of-use assets, gross | 135,174 | 132,901
Less: Accumulated depreciation | (45,805) | (40,396)
Right of use assets, net | $ 89,369 | $ 92,505

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- Definition Amount of accumulated depreciation of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123405975&loc=d3e41551-112718 Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123422147&loc=d3e41460-112716 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919398-209981 + Details
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