Contingencies	3 Months Ended
Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
9. Contingencies	Litigation On July 1, 2014, a 100-pound propane cylinder allegedly filled at a Philadelphia-area U-Haul Co. of Pennsylvania (“UHPA”) center exploded while in use on a food truck. The explosion killed two people and injured eleven. Following the incident, the injured parties and their estates filed a number of lawsuits against U-Haul and its subsidiary, UHPA, both of which denied the allegations. One plaintiff sued AMERCO, which also denied the allegations. All suits were filed in the Philadelphia Court of Common Pleas. The plaintiffs alleged, among other things, that UHPA should not have refilled the propane cylinder at issue because it was out-of-date and improperly fitted with an incorrect valve, which allegedly caused the explosion. The plaintiffs sought compensatory and punitive damages. After several settlements with the less-injured plaintiffs, in April 2018, the parties reached an agreement, in principle, to settle the remaining cases. We will pay our self-insured retention and attorney’s fees. Together, these amounts are currently estimated to be $27.3 million, of which $26.8 million has already been paid. The balance of the settlement amount is accrued on our balance sheet in Policy benefits and losses, claims and loss expenses payable with offsetting insurance recoveries from our insurance carriers in Other assets. Following the resolution of the civil claims in April 2018, the U.S. Attorney’s Office for the Eastern District of Pennsylvania advised the Company that UHPA was a target of an investigation. On June 12, 2018, UHPA was indicted by a grand jury in the U.S. District Court for the Eastern District of Pennsylvania. The six-count indictment charged UHPA with allegedly improperly filling propane cylinders that were overdue for periodic requalification, offering such cylinders for transportation, and failing to train and certify a UHPA employee dispensing propane. UHPA will vigorously defend itself against the charges. 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.

Litigation

On July 1, 2014, a 100-pound propane cylinder allegedly filled at a Philadelphia-area U-Haul Co. of Pennsylvania (“UHPA”) center exploded while in use on a food truck. The explosion killed two people and injured eleven. Following the incident, the injured parties and their estates filed a number of lawsuits against U-Haul and its subsidiary, UHPA, both of which denied the allegations. One plaintiff sued AMERCO, which also denied the allegations. All suits were filed in the Philadelphia Court of Common Pleas. The plaintiffs alleged, among other things, that UHPA should not have refilled the propane cylinder at issue because it was out-of-date and improperly fitted with an incorrect valve, which allegedly caused the explosion. The plaintiffs sought compensatory and punitive damages.

After several settlements with the less-injured plaintiffs, in April 2018, the parties reached an agreement, in principle, to settle the remaining cases. We will pay our self-insured retention and attorney’s fees. Together, these amounts are currently estimated to be $27.3 million, of which $26.8 million has already been paid. The balance of the settlement amount is accrued on our balance sheet in Policy benefits and losses, claims and loss expenses payable with offsetting insurance recoveries from our insurance carriers in Other assets.

Following the resolution of the civil claims in April 2018, the U.S. Attorney’s Office for the Eastern District of Pennsylvania advised the Company that UHPA was a target of an investigation. On June 12, 2018, UHPA was indicted by a grand jury in the U.S. District Court for the Eastern District of Pennsylvania. The six-count indictment charged UHPA with allegedly improperly filling propane cylinders that were overdue for periodic requalification, offering such cylinders for transportation, and failing to train and certify a UHPA employee dispensing propane. UHPA will vigorously defend itself against the charges.

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.