Basis of Presentation	6 Months Ended
Sep. 30, 2019
Disclosure Text Block [Abstract]
1. Basis of Presentation	AMERCO, a Nevada corporation (“AMERCO”), has a second fiscal quarter that ends on the 30th of September for each year that is referenced. Our insurance company subsidiaries have a second quarter that ends on the 30th of June for each year that is referenced. They have been consolidated on that basis. Our insurance companies’ financial reporting processes conform to calendar year reporting as required by state insurance departments. Management believes that consolidating their calendar year into our fiscal year financial statements does not materially affect the presentation of financial position or results of operations. We disclose material events, if any, occurring during the intervening period. Consequently, all references to our insurance subsidiaries’ years 2019 and 2018 correspond to fiscal 2020 and 2019 for AMERCO. Accounts denominated in non-U.S. currencies have been translated into U.S. dollars. Certain amounts reported in previous years have been reclassified to conform to the current presentation. The condensed consolidated balance sheet as of September 30, 2019 and the related condensed consolidated statements of operations, comprehensive income (loss), stockholders’ equity for the second quarter and first six months of fiscal 2020 and 2019 and cash flows for the six months of fiscal 2020 and 2019 are unaudited. In our opinion, all adjustments necessary for the fair presentation of such condensed consolidated financial statements have been included. Such adjustments consist only of normal recurring items. Interim results are not necessarily indicative of results for a full year. The information in this Quarterly Report on Form 10-Q (“Quarterly Report”) should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations and financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended March 31, 2019. Intercompany accounts and transactions have been eliminated. Description of Legal Entities AMERCO is the holding company for: U-Haul International, Inc. (“U-Haul”); Amerco Real Estate Company (“Real Estate”); Repwest Insurance Company (“Repwest”); and Oxford Life Insurance Company (“Oxford”). Unless the context otherwise requires, the terms “Company,” “we,” “us” or “our” refer to AMERCO and all of its legal subsidiaries. Description of Operating Segments AMERCO has three (3) reportable segments. They are Moving and Storage, Property and Casualty Insurance and Life Insurance. The Moving and Storage operating segment (“Moving and Storage”) includes AMERCO, U-Haul and Real Estate and the wholly owned subsidiaries of U-Haul and Real Estate. Operations consist of the rental of trucks and trailers, sales of moving supplies, sales of towing accessories, sales of propane, and the rental of fixed and portable moving and storage units to the “do-it-yourself” mover and management of self-storage properties owned by others. Operations are conducted under the registered trade name U-Haul® throughout the United States and Canada. 8 The Property and Casualty Insurance operating segment (“Property and Casualty Insurance”) includes Repwest and its wholly owned subsidiaries and ARCOA Risk Retention Group (“ARCOA”). Property and Casualty Insurance provides loss adjusting and claims handling for U-Haul® through regional offices in the United States and Canada. Property and Casualty Insurance also underwrites components of the Safemove®, Safetow®, Safemove Plus®, Safestor® and Safestor Mobile® protection packages to U-Haul customers. The business plan for Property and Casualty Insurance includes offering property and casualty insurance products in other U-Haul-related programs. ARCOA is a group captive insurer owned by us and our wholly owned subsidiaries whose purpose is to provide insurance products related to our moving and storage business. The Life Insurance operating segment (“Life Insurance”) includes Oxford and its wholly owned subsidiaries. Life Insurance provides life and health insurance products primarily to the senior market through the direct writing and reinsuring of life insurance, Medicare supplement and annuity policies.

Basis of Presentation

6 Months Ended

Sep. 30, 2019

AMERCO, a Nevada corporation (“AMERCO”), has a second fiscal quarter that ends on the 30th of September for each year that is referenced. Our insurance company subsidiaries have a second quarter that ends on the 30th of June for each year that is referenced. They have been consolidated on that basis. Our insurance companies’ financial reporting processes conform to calendar year reporting as required by state insurance departments. Management believes that consolidating their calendar year into our fiscal year financial statements does not materially affect the presentation of financial position or results of operations. We disclose material events, if any, occurring during the intervening period. Consequently, all references to our insurance subsidiaries’ years 2019 and 2018 correspond to fiscal 2020 and 2019 for AMERCO.

Accounts denominated in non-U.S. currencies have been translated into U.S. dollars. Certain amounts reported in previous years have been reclassified to conform to the current presentation.

The condensed consolidated balance sheet as of September 30, 2019 and the related condensed consolidated statements of operations, comprehensive income (loss), stockholders’ equity for the second quarter and first six months of fiscal 2020 and 2019 and cash flows for the six months of fiscal 2020 and 2019 are unaudited.

In our opinion, all adjustments necessary for the fair presentation of such condensed consolidated financial statements have been included. Such adjustments consist only of normal recurring items. Interim results are not necessarily indicative of results for a full year. The information in this Quarterly Report on Form 10-Q (“Quarterly Report”) should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations and financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended March 31, 2019.

Intercompany accounts and transactions have been eliminated.

Description of Legal Entities

AMERCO is the holding company for:

U-Haul International, Inc. (“U-Haul”);

Amerco Real Estate Company (“Real Estate”);

Repwest Insurance Company (“Repwest”); and

Oxford Life Insurance Company (“Oxford”).

Unless the context otherwise requires, the terms “Company,” “we,” “us” or “our” refer to AMERCO and all of its legal subsidiaries.

Description of Operating Segments

AMERCO has three (3) reportable segments. They are Moving and Storage, Property and Casualty Insurance and Life Insurance.

The Moving and Storage operating segment (“Moving and Storage”) includes AMERCO, U-Haul and Real Estate and the wholly owned subsidiaries of U-Haul and Real Estate. Operations consist of the rental of trucks and trailers, sales of moving supplies, sales of towing accessories, sales of propane, and the rental of fixed and portable moving and storage units to the “do-it-yourself” mover and management of self-storage properties owned by others. Operations are conducted under the registered trade name U-Haul® throughout the United States and Canada.

The Property and Casualty Insurance operating segment (“Property and Casualty Insurance”) includes Repwest and its wholly owned subsidiaries and ARCOA Risk Retention Group (“ARCOA”). Property and Casualty Insurance provides loss adjusting and claims handling for U-Haul® through regional offices in the United States and Canada. Property and Casualty Insurance also underwrites components of the Safemove®, Safetow®, Safemove Plus®, Safestor® and Safestor Mobile® protection packages to U-Haul customers. The business plan for Property and Casualty Insurance includes offering property and casualty insurance products in other U-Haul-related programs. ARCOA is a group captive insurer owned by us and our wholly owned subsidiaries whose purpose is to provide insurance products related to our moving and storage business.

The Life Insurance operating segment (“Life Insurance”) includes Oxford and its wholly owned subsidiaries. Life Insurance provides life and health insurance products primarily to the senior market through the direct writing and reinsuring of life insurance, Medicare supplement and annuity policies.