Principles of Consolidation	12 Months Ended
Mar. 31, 2022
Disclosure Text Block [Abstract]
Principles of Consolidation	Note 2. Principles of Consolidation We apply Accounting Standards Codification (“ASC”) 810 - Consolidation (“ASC 810”) in our principles of consolidation. ASC 810 addresses arrangements where a company does not hold a majority of the voting or similar interests of a variable interest entity (“VIE”). A company is required to consolidate a VIE if it has determined it is the primary beneficiary, which is the entity with the power to direct activities that most significantly affect the economic performance of the VIE and has the obligation absorbs the majority of the losses or benefits. ASC 810 also addresses the policy when a company owns a majority of the voting or similar rights and exercises effective control. A VIE is not self-supportive due to having one or both of the following conditions: (i) it has an insufficient amount of equity for it to finance its activities without receiving additional subordinated financial support or (ii) its owners do not hold the typical risks and rights of equity owners. This determination is made upon the creation of a variable interest and is re-assessed on an on-going basis should certain changes in the operations of a VIE, or its relationship with the primary beneficiary trigger a reconsideration. After a reconsideration event occurs the most recent facts and circumstances are utilized in determining whether or not a company is a VIE, which other company(ies) have a variable interest in the entity, and whether or not the company’s interest is such that it is the primary beneficiary. We will continue to monitor our relationships with the other entities regarding who is the primary beneficiary, which could change based on facts and circumstances of any reconsideration events. Please see Note 19, Related Party Transactions, of the Notes to Consolidated Financial Statements. The accompanying Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries, which are consolidated under the voting interest model. 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. 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. 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 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. 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.

Principles of Consolidation

12 Months Ended

Mar. 31, 2022

Note 2. Principles of Consolidation We apply Accounting Standards Codification (“ASC”) 810 - Consolidation (“ASC 810”) in our principles of consolidation. ASC 810 addresses arrangements where a company does not hold a majority of the voting or similar interests of a variable interest entity (“VIE”). A company is required to consolidate a VIE if it has determined it is the primary beneficiary, which is the entity with the power to direct activities that most significantly affect the economic performance of the VIE and has the obligation absorbs the majority of the losses or benefits. ASC 810 also addresses the policy when a company owns a majority of the voting or similar rights and exercises effective control. A VIE is not self-supportive due to having one or both of the following conditions: (i) it has an insufficient amount of equity for it to finance its activities without receiving additional subordinated financial support or (ii) its owners do not hold the typical risks and rights of equity owners. This determination is made upon the creation of a variable interest and is re-assessed on an on-going basis should certain changes in the operations of a VIE, or its relationship with the primary beneficiary trigger a reconsideration. After a reconsideration event occurs the most recent facts and circumstances are utilized in determining whether or not a company is a VIE, which other company(ies) have a variable interest in the entity, and whether or not the company’s interest is such that it is the primary beneficiary. We will continue to monitor our relationships with the other entities regarding who is the primary beneficiary, which could change based on facts and circumstances of any reconsideration events. Please see Note 19, Related Party Transactions, of the Notes to Consolidated Financial Statements. The accompanying Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries, which are consolidated under the voting interest model. 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. 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. 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 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. 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.