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v2.4.1.9

Condensed Consolidated Balance Sheets Parenthetical (USD $) | Dec. 31, 2014 | Mar. 31, 2014
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Series Preferred Stock With or Without Par Value [Member] |  |
Preferred stock: |  |
Preferred stock, shares authorized | 50,000,000 us-gaap_PreferredStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = uhal_SeriesPreferredStockWithOrWithoutParValueMember | 50,000,000 us-gaap_PreferredStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = uhal_SeriesPreferredStockWithOrWithoutParValueMember
Series A Preferred Stock [Member] |  |
Preferred stock: |  |
Preferred stock, shares authorized | 6,100,000 us-gaap_PreferredStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember | 6,100,000 us-gaap_PreferredStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember
Preferred stock, shares issued | 6,100,000 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember | 6,100,000 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember
Preferred stock, shares outstanding | 0 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember | 0 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember
Preferred stock, no par value | 0.00 us-gaap_PreferredStockNoParValue / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember | 0.00 us-gaap_PreferredStockNoParValue / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember
Series B Preferred Stock [Member] |  |
Preferred stock: |  |
Preferred stock, shares authorized | 100,000 us-gaap_PreferredStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember | 100,000 us-gaap_PreferredStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
Preferred stock, shares issued | 0 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember | 0 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
Preferred stock, shares outstanding | 0 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember | 0 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
Preferred stock, no par value | 0.00 us-gaap_PreferredStockNoParValue / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember | 0.00 us-gaap_PreferredStockNoParValue / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
Series Common Stock With or Without Par Value [Member] |  |
Common stock: |  |
Common stock, shares authorized | 150,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = uhal_SeriesCommonStockWithOrWithoutParValueMember | 150,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = uhal_SeriesCommonStockWithOrWithoutParValueMember
Series A Common Stock [Member] |  |
Common stock: |  |
Common stock, shares authorized | 10,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | 10,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Common stock, shares, issued | 0 us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | 0 us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Common stock, shares, outstanding | 0 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | 0 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Common stock, par or stated value per share | 0.25 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | 0.25 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Common Stock [Member] |  |
Common stock: |  |
Common stock, shares authorized | 150,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember | 150,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
Common stock, par or stated value per share | 0.25 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember | 0.25 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
Amerco Common Stock [Member] |  |
Common stock: |  |
Common stock, shares authorized | 150,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = uhal_AmercoCommonStockMember | 150,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = uhal_AmercoCommonStockMember
Common stock, shares, issued | 41,985,700 us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = uhal_AmercoCommonStockMember | 41,985,700 us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = uhal_AmercoCommonStockMember
Common stock, shares, outstanding | 19,607,788 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = uhal_AmercoCommonStockMember | 19,607,788 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = uhal_AmercoCommonStockMember
Common stock, par or stated value per share | 0.25 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = uhal_AmercoCommonStockMember | 0.25 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = uhal_AmercoCommonStockMember
Common Stock in Treasury [Member] |  |
Treasury stock: |  |
Treasury stock, shares | 22,377,912 us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = uhal_CommonStockInTreasuryMember | 22,377,912 us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = uhal_CommonStockInTreasuryMember
Preferred Stock in Treasury [Member] |  |
Treasury stock: |  |
Treasury stock, shares | 6,100,000 us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = uhal_PreferredStockInTreasuryMember | 6,100,000 us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = uhal_PreferredStockInTreasuryMember

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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details
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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details
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