XML 105 R83.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Employee Benefit Plans (Summary of Financing Arrangements for Leveraged ESOP Debt) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Issued June, 1991 [Member] |  |  |
Debt Disclosure [Abstract] |  |  |
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount | $ 46 |  |
Employee stock ownership plan (ESOP), interest payments | 10 | $ 48 | $ 53
Issued July, 2009 [Member] |  |  |
Debt Disclosure [Abstract] |  |  |
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount | 991 |  |
Employee stock ownership plan (ESOP), interest payments | 33 | $ 31 | $ 17
Issued February, 2016 [Member] |  |  |
Debt Disclosure [Abstract] |  |  |
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount | $ 5,000 |  |
Employee stock ownership plan (ESOP), interest payments |  |  |

X
- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount reported as a liability as of the balance sheet date by the entity (the employer) of the loan made by a third-party lender to the employer relating to loans made by the employer to the ESOP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Indirect Loan -URI http://asc.fasb.org/extlink&oid=6515647 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16545-113920 + Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPDebtStructureIndirectLoanAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition An entity often discloses the amount of interest paid by the ESOP to a lender. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16545-113920 + Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPInterestPaymentsFromESOP
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis=uhal_FirstLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis=uhal_FourthLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis=uhal_FifthLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |