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Revenue Recognition (Revenue disaggregated by timing of revenue recognition) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Revenue From Contract With Customer [Abstract] |  |  |
Revenues recognized over time | $ 2,814,732 | $ 2,617,990 | $ 2,494,060
Revenues recognized at point in time | 305,408 | 301,152 | 291,886
Total revenues recognized under ASC 606 | 3,120,140 | 2,919,142 | 2,785,946
Revenues recognized under ASC 840 | 406,070 | 353,924 | 311,403
Revenues recognized under ASC 944 | 131,563 | 217,575 | 222,142
Revenues recognized under ASC 320 | 110,934 | 110,473 | 102,276
Total revenues | $ 3,768,707 | $ 3,601,114 | $ 3,421,767

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- Definition Summation of revenues from contracts with customers recognized over time and a point in time in accordance of ASC 606. + References No definition available. + Details
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- Definition Revenues from contracts with customers from life insurance and property and casualty premiums. + References No definition available. + Details
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- Definition Revenues from contracts with customers containing net investment and interest income. + References No definition available. + Details
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- Definition Self storage revenues and some other revenue. + References No definition available. + Details
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- Definition Self moving equipment rentals and property management fees and some other revenue. + References No definition available. + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 + Details
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