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Fleet loan provision specified LIBOR plus applicable margin. This is the lower of the two applicable margin rates at the time of the loan agreement.

No definition available.

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Sum of LIBOR and margin, at the higher of the rate.

No definition available.

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This is the sum of LIBOR and margin, at the lower of the rate range.

No definition available.

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The debt agreement amount at the beginning of this contract. It is no longer valid because of a subsequent amendment in the terms of this loan.

No definition available.

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Portion of aggregate deposit with federal home loan bank subject to a fixed interest rate until maturity.

No definition available.

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Portion of aggregate deposit with federal home loan bank subject to a variable interest rate without a maturity date.

No definition available.

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Fixed interest rate associated with first of two components of aggregate deposit with the federal home loan bank.

No definition available.

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Variable rate calculated on a daily spread FED funds benchmark payable on monthly basis.

No definition available.

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Date the portion of the aggregate deposit subject to a fixed interest rate matures.

No definition available.

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We include two different LIBOR rates for these loans in our documentation.

No definition available.

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The amount of corporate (parent company) debt held by our insurance subsidiaries.

No definition available.

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The increase during the period in capital lease obligations due to entering into new capital leases.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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No definition available.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

No definition available.

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentageAbstract
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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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Earliest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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A general description of the lessee's leasing arrangements including, but not limited to, the following: a) the basis on which contingent rental payments are determined; (b) the existence and terms of renewal or purchase options and escalation clauses; (c) restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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No definition available.

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Amount of advances from the Federal Home Loan Bank (FHLB).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Name:	us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of cash paid for interest during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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No definition available.

Name:	us-gaap_InterestPaidAbstract
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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Data Type:	xbrli:monetaryItemType
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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.

Name:	us-gaap_LongTermDebtAbstract
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No definition available.

Name:	us-gaap_LongTermDebtCurrentAbstract
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	us-gaap_LongTermDebtOtherDisclosuresAbstract
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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

Name:	us-gaap_LongTermDebtPercentageBearingVariableInterestRate
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Data Type:	num:percentItemType
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Period Type:	instant

Stated maturity date of the mortgage loan receivable on real estate, in CCYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Name:	us-gaap_MortgageLoanOnRealEstateFinalMaturityDate
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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

Name:	us-gaap_OtherBorrowings
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount after depreciation of long-lived, physical assets used to produce goods and services and not intended for resale, classified as other.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentOtherNet
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_MediumTermNotesMember
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Data Type:	na
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Name:	us-gaap_LongtermDebtTypeAxis=uhal_FleetLoanSecuritizationMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CapitalLeaseObligationsMember
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Data Type:	na
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Name:	us-gaap_LongtermDebtTypeAxis=uhal_RevolvingFleetLoanOneMember
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Name:	us-gaap_LongtermDebtTypeAxis=uhal_RevolvingFleetLoanThreeMember
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