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Contingencies	6 Months Ended
Contingencies	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Contingencies	8. Contingencies Environmental Compliance with environmental requirements of federal, state and local governments may significantly affect Real Estate's business operations. Among other things, these requirements regulate the discharge of materials into the air, land and water and govern the use and disposal of hazardous substances. Real Estate is aware of issues regarding hazardous substances on some of its properties. Real Estate regularly makes capital and operating expenditures to stay in compliance with environmental laws and has put in place a remedial plan at each site where it believes such a plan is necessary. Since 1988, Real Estate has managed a testing and removal program for underground storage tanks. Based upon the information currently available to Real Estate, compliance with the environmental laws and its share of the costs of investigation and cleanup of known hazardous waste sites are not expected to result in a material adverse effect on AMERCO's financial position or results of operations. Other We are named as a defendant in various other litigation and claims arising out of the normal course of business. In management's opinion, none of these other matters will have a material effect on our financial position and results of operations.