XML 96 R74.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Reclassification of AOCI to Earnings (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended
--- | ---
Sep. 30, 2012
Reclassification of Aoci To Earnings [Abstract] |
Reclassify net losses on interest rate contracts from AOCI to earnings over the next twelve months | $ 17

X
- Details
Name: | uhal_ReclassificationOfAociToEarningsAbstract
Namespace Prefix: | uhal_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration