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v2.4.1.9

Derivatives (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Mar. 31, 2015
Swap Agreement Three [Member] |  |
Swaps: |  |
Original variable, rate debt amount | $ 300.0 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementThreeMember |
Agreement date | Aug. 16, 2006 |
Effective date | Aug. 18, 2006 |
Expiration date | Aug. 10, 2018 |
Designed cash flow hedge date | Aug. 04, 2006 |
Swap Agreement Seven [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 19.3 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementSevenMember | [1]
Agreement date | Apr. 08, 2008 |
Effective date | Aug. 15, 2008 |
Expiration date | Jun. 15, 2015 |
Designed cash flow hedge date | Mar. 31, 2008 |
Swap Agreement Eight [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 19.0 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementEightMember |
Agreement date | Aug. 27, 2008 |
Effective date | Aug. 29, 2008 |
Expiration date | Jul. 10, 2015 |
Designed cash flow hedge date | Apr. 10, 2008 |
Swap Agreement Nine [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 30.0 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementNineMember |
Agreement date | Sep. 24, 2008 |
Effective date | Sep. 30, 2008 |
Expiration date | Sep. 10, 2015 |
Designed cash flow hedge date | Sep. 24, 2008 |
Swap Agreement Ten [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 15.0 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementTenMember | [1]
Agreement date | Mar. 24, 2009 |
Effective date | Mar. 30, 2009 |
Expiration date | Mar. 30, 2016 |
Designed cash flow hedge date | Mar. 25, 2009 |
Swap Agreement Eleven [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 14.7 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementElevenMember | [1]
Agreement date | Jul. 06, 2010 |
Effective date | Aug. 15, 2010 |
Expiration date | Jul. 15, 2017 |
Designed cash flow hedge date | Jul. 06, 2010 |
Swap Agreement Twelve [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 25.0 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementTwelveMember | [1]
Agreement date | Apr. 26, 2011 |
Effective date | Jun. 01, 2011 |
Expiration date | Jun. 01, 2018 |
Designed cash flow hedge date | Jun. 01, 2011 |
Swap Agreement Thirteen [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 50.0 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementThirteenMember | [1]
Agreement date | Jul. 29, 2011 |
Effective date | Aug. 15, 2011 |
Expiration date | Aug. 15, 2018 |
Designed cash flow hedge date | Jul. 29, 2011 |
Swap Agreement Fourteen [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 20.0 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementFourteenMember | [1]
Agreement date | Aug. 03, 2011 |
Effective date | Sep. 12, 2011 |
Expiration date | Sep. 10, 2018 |
Designed cash flow hedge date | Aug. 03, 2011 |
Swap Agreement Fifteen [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 15.1 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementFifteenMember | [2]
Agreement date | Mar. 27, 2012 |
Effective date | Mar. 28, 2012 |
Expiration date | Mar. 28, 2019 |
Designed cash flow hedge date | Mar. 26, 2012 |
Swap Agreement Sixteen [Member] |  |
Swaps: |  |
Original variable, rate debt amount | 25.0 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementSixteenMember |
Agreement date | Apr. 13, 2012 |
Effective date | Apr. 16, 2012 |
Expiration date | Apr. 01, 2019 |
Designed cash flow hedge date | Apr. 12, 2012 |
Swap Agreement Seventeen [Member] |  |
Swaps: |  |
Original variable, rate debt amount | $ 44.3 us-gaap_DebtInstrumentFaceAmount / us-gaap_DerivativeByNatureAxis = uhal_SwapAgreementSeventeenMember |
Agreement date | Jan. 11, 2013 |
Effective date | Jan. 15, 2013 |
Expiration date | Dec. 15, 2019 |
Designed cash flow hedge date | Jan. 11, 2013 |
[1] | forward swap
[2] | operating lease

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