XML 101 R86.htm IDEA: XBRL DOCUMENT
v3.19.1

Employee Benefit Plans (Summary of Financing Arrangements for Leveraged ESOP Debt) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Issued June, 1991 [Member] |  |  |
Debt Disclosure [Abstract] |  |  |
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount |  |  |
Employee stock ownership plan (ESOP), interest payments | 1 | $ 1 | $ 2
Issued July, 2009 [Member] |  |  |
Debt Disclosure [Abstract] |  |  |
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount | 233 |  |
Employee stock ownership plan (ESOP), interest payments | 17 | 26 | 36
Issued February, 2016 [Member] |  |  |
Debt Disclosure [Abstract] |  |  |
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount | 4,966 |  |
Employee stock ownership plan (ESOP), interest payments | $ 190 | $ 242 |

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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109244457&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=109244457&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: |