Schedule V - Supplemental Information (for Property-Casualty Insurance Operations)	12 Months Ended
Mar. 31, 2023
Disclosure Text Block [Abstract]
Schedule Of Supplemental Information For Property Casualty Insurance Underwriters [Text Block]	SCHEDULE V U-Haul Holding Company AND CONSOLIDATED SUBSIDIARIES SUPPLEMENTAL INFORMATION (FOR PROPERTY-CASUALTY INSURANCE Operations) Years Ended December 31, 2022, 2021, AND 2020 Fiscal Year Affiliation with Registrant Deferred Policy Acquisition Cost Reserves for Unpaid Claims and Adjustment Expenses Discount if any, Deducted Unearned Premiums Net Earned Premiums (1) Net Investment Income (2) Claim and Claim Adjustment Expenses Incurred Related to Current Year Claim and Claim Adjustment Expenses Incurred Related to Prior Year Amortization of Deferred Policy Acquisition Costs Paid Claims and Claim Adjustment Expense Net Premiums Written (1) (In thousands) 2023 Consolidated property casualty entity $ – $ 151,874 $ – (97) $ 96,242 $ 7,314 $ 27,570 $ (5,828) $ – $ 22,965 $ 96,145 2022 Consolidated property casualty entity – 159,162 – 334 89,667 24,385 28,980 (6,290) – 24,012 90,002 2021 Consolidated property casualty entity – 177,963 – (294) 70,285 16,335 20,670 (3,865) – 25,759 69,989 (1)The earned and written premiums are reported net of intersegment transactions. There were $2.9 million, $3.1 million and $1.5 million in written premiums and $3.0 million, $2.8 million and $1.8 million in earned premiums eliminated for the years ended December 31, 2022, 2021 and 2020, respectively. (2) Net Investment Income excludes net realized (gains) losses on investments of $0.1 million, ($1.0) million and ($0.1) million for the years ended December 31, 2022, 2021 and 2020, respectively.

Schedule V - Supplemental Information (for Property-Casualty Insurance Operations)

12 Months Ended

Mar. 31, 2023

Schedule Of Supplemental Information For Property Casualty Insurance Underwriters [Text Block]

SCHEDULE V U-Haul Holding Company AND CONSOLIDATED SUBSIDIARIES SUPPLEMENTAL INFORMATION (FOR PROPERTY-CASUALTY INSURANCE Operations) Years Ended December 31, 2022, 2021, AND 2020 Fiscal Year Affiliation with Registrant Deferred Policy Acquisition Cost Reserves for Unpaid Claims and Adjustment Expenses Discount if any, Deducted Unearned Premiums Net Earned Premiums (1) Net Investment Income (2) Claim and Claim Adjustment Expenses Incurred Related to Current Year Claim and Claim Adjustment Expenses Incurred Related to Prior Year Amortization of Deferred Policy Acquisition Costs Paid Claims and Claim Adjustment Expense Net Premiums Written (1) (In thousands) 2023 Consolidated property casualty entity $ – $ 151,874 $ – (97) $ 96,242 $ 7,314 $ 27,570 $ (5,828) $ – $ 22,965 $ 96,145 2022 Consolidated property casualty entity – 159,162 – 334 89,667 24,385 28,980 (6,290) – 24,012 90,002 2021 Consolidated property casualty entity – 177,963 – (294) 70,285 16,335 20,670 (3,865) – 25,759 69,989 (1)The earned and written premiums are reported net of intersegment transactions. There were $2.9 million, $3.1 million and $1.5 million in written premiums and $3.0 million, $2.8 million and $1.8 million in earned premiums eliminated for the years ended December 31, 2022, 2021 and 2020, respectively. (2) Net Investment Income excludes net realized (gains) losses on investments of $0.1 million, ($1.0) million and ($0.1) million for the years ended December 31, 2022, 2021 and 2020, respectively.