XML 177 R130.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Estimated Useful Life (Details) | 12 Months Ended
--- | ---
Mar. 31, 2015
Equipment Leased to Other Party [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 2 years 0 months 0 days
Equipment Leased to Other Party [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 20 years 0 months 0 days
All Nonrental Equipment [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 3 years 0 months 0 days
All Nonrental Equipment [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 55 years 0 months 0 days

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=uhal_AllNonrentalEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentLeasedToOtherPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |