Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Revenues:
Self-moving equipment rentals	$ 2,146,391	$ 1,955,423	$ 1,767,520
Self-storage revenues	211,136uhal_SelfStorageRevenues	181,794uhal_SelfStorageRevenues	152,660uhal_SelfStorageRevenues
Self-moving and self-storage products and service sales	244,177us-gaap_SalesRevenueGoodsGross	234,187us-gaap_SalesRevenueGoodsGross	221,117us-gaap_SalesRevenueGoodsGross
Property management fees	25,341us-gaap_ManagementFeesRevenue	24,493us-gaap_ManagementFeesRevenue	24,378us-gaap_ManagementFeesRevenue
Life insurance premiums	156,103us-gaap_PremiumsEarnedNetLife	157,919us-gaap_PremiumsEarnedNetLife	178,115us-gaap_PremiumsEarnedNetLife
Property and casualty insurance premiums	46,456	41,052	34,342
Net investment and interest income	84,728	79,591	82,903
Other revenue	160,199us-gaap_OtherIncome	160,793us-gaap_OtherIncome	97,552us-gaap_OtherIncome
Total revenues	3,074,531us-gaap_Revenues	2,835,252us-gaap_Revenues	2,558,587us-gaap_Revenues
Costs and expenses:
Operating expenses	1,479,409us-gaap_OperatingExpenses	1,313,674us-gaap_OperatingExpenses	1,193,934us-gaap_OperatingExpenses
Commission expenses	249,642us-gaap_SalesCommissionsAndFees	227,332us-gaap_SalesCommissionsAndFees	204,758us-gaap_SalesCommissionsAndFees
Cost of sales	146,072us-gaap_CostOfGoodsSold	127,270us-gaap_CostOfGoodsSold	107,216us-gaap_CostOfGoodsSold
Benefits and losses	158,760	156,702	180,676
Amortization of deferred policy acquisition costs	19,661	19,982	17,376
Lease expense	79,798us-gaap_LeaseAndRentalExpense	100,466us-gaap_LeaseAndRentalExpense	117,448us-gaap_LeaseAndRentalExpense
Depreciation, net of (gains) losses on disposals	278,165	259,612	237,996
Total costs and expenses	2,411,507us-gaap_CostsAndExpenses	2,205,038us-gaap_CostsAndExpenses	2,059,404us-gaap_CostsAndExpenses
Earnings from operations	663,024us-gaap_OperatingIncomeLoss	630,214us-gaap_OperatingIncomeLoss	499,183us-gaap_OperatingIncomeLoss
Interest expense	(97,525)us-gaap_InterestExpense	(92,692)us-gaap_InterestExpense	(90,696)us-gaap_InterestExpense
Fees and amortization on early extinguishment of debt	(4,081)	0	0
Pretax earnings	561,418	537,522	408,487
Income tax expense	(204,677)us-gaap_IncomeTaxExpenseBenefit	(195,131)us-gaap_IncomeTaxExpenseBenefit	(143,779)us-gaap_IncomeTaxExpenseBenefit
Earnings available to common shareholders	$ 356,741us-gaap_NetIncomeLoss	$ 342,391us-gaap_NetIncomeLoss	$ 264,708us-gaap_NetIncomeLoss
Basic and diluted earnings per common share	$ 18.21	$ 17.51	$ 13.56
Weighted average common shares outstanding: basic and diluted	19,586,633	19,558,758	19,518,779

This company-specific concept is a combination of two US-GAAP taxonomy concepts. (1) Depreciation: "The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation." (2) Gain (Loss) on Disposition of Assets: "The gains and losses included in earnings resulting from the sale or disposal of tangible assets."

No definition available.