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Related Party Transactions (Narratives) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Sac Holdings, Mercury, Four Sac, Five Sac, Galaxy and Private Mini [Member] |  |  |
Property Management Fee [Abstract] |  |  |
Management fees received exclusive of reimbursed expenses | $ 38.5 | $ 31.2 | $ 29.0
Sac Holdings, Mercury, Four Sac, Five Sac, Galaxy and Private Mini [Member] | Minimum [Member] |  |  |
Property Management Fee [Abstract] |  |  |
Management fee rate | 4.00% |  |
Sac Holdings, Mercury, Four Sac, Five Sac, Galaxy and Private Mini [Member] | Maximum [Member] |  |  |
Property Management Fee [Abstract] |  |  |
Management fee rate | 10.00% |  |
Sac Holdings, Four Sac, Five Sac, Galaxy, Privite mini [Member] |  |  |
Related party costs and expenses: |  |  |
Revenue, excluding dealer agreement commissions and expenses | $ 28.5 |  |
Expenses, related parties | 2.4 |  |
Cash flow, related party | 25.9 |  |
Commission expenses, generated from dealer agreement with related parties | 417.9 |  |
Payments to aquire assets, other | $ 88.3 |  |

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- Definition Cash generated from agreements and notes with SAC Holdings, Four SAC, Five SAC, Galaxy and Private Mini, excluding Dealer Agreements. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition These agreements and notes with subsidiaries of SAC Holdings, 4 SAC, 5 SAC, Galaxy and Private Mini, Excluded Dealer Agreements commission expenses. + References No definition available. + Details
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- Definition The amount of revenue received excluding any revenue generated from dealer commissions or expenses as part of the dealer contract between the Company and these related party entities. + References No definition available. + Details
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- Definition This provides just the cost and expense for SAC holdings. + References No definition available. + Details
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- Definition Amount of cash paid to purchase other assets as part of operating activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585 + Details
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- References No definition available. + Details
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- Definition The percentage charged for managing real estate properties. + References No definition available. + Details
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- Definition The amount of revenue derived from managing real estate properties. + References No definition available. + Details
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- References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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