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v3.21.1

Borrowings (Narratives) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Debt instruments, face, payment, and remaining balance amount: |  |  |
Notes, loans and leases payable | $ 4,668,907 | $ 4,621,291 |
Debt instruments, issuance and maturity dates: |  |  |
Remaining Lease Term Finance Lease Weighted Average | 3 | 4 |
Real estate loan (amortizing term) [Member] | Minimum [Member] |  |  |
Debt instruments, issuance and maturity dates: |  |  |
Debt instrument, maturity year | 2021 |  |
Real estate loan (amortizing term) [Member] | Maximum [Member] |  |  |
Debt instruments, issuance and maturity dates: |  |  |
Debt instrument, maturity year | 2036 |  |
Rental Truck (securitizations) [Member] | Amerco [Member] | Minimum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 1.61% |  |
Rental Truck (securitizations) [Member] | Amerco [Member] | Maximum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 4.66% |  |
Capital Lease Obligations [Member] | Amerco [Member] |  |  |
Lease Cost [Abstract] |  |  |
Sale Leaseback Transaction Lease Terms | (7) years |  |
Capital Lease Obligations [Member] | Amerco [Member] | Minimum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 1.60% |  |
Capital Lease Obligations [Member] | Amerco [Member] | Maximum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 4.22% |  |
Finance Lease [Member] | Amerco [Member] |  |  |
Debt instruments, face, payment, and remaining balance amount: |  |  |
Capitalized assets, net book value | $ 865,600 | $ 1,067,300 |
Lease Cost [Abstract] |  |  |
Sale Leaseback Transaction Lease Terms | (7) year terms |  |
Finance Lease [Member] | Amerco [Member] | Minimum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 1.92% |  |
Finance Lease [Member] | Amerco [Member] | Maximum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 5.04% |  |
Other Obligations [Member] | Amerco [Member] |  |  |
Debt instruments, face, payment, and remaining balance amount: |  |  |
Amounts held at LIBOR plus margin | $ 200,000 |  |
Amerco Real Estate Subsidiaries and Uhaul Company of Florida [Member] | Real estate loan (amortizing term) [Member] |  |  |
Debt instruments, interest rate, effective percentage: |  |  |
LIBOR | 0.11% |  |
Applicable margin interest rate | 1.50% |  |
Sum of LIBOR and margin, maximum rate | 1.61% |  |
Various Subsidiaries of Amerco Real Estate and Uhaul Intl [Member] | Senior mortgages [Member] |  |  |
Debt instruments, interest rate, effective percentage: |  |  |
Debt Weighted Average Interest Rate | 4.28% |  |
Various Subsidiaries of Amerco Real Estate and Uhaul Intl [Member] | Senior mortgages [Member] | Minimum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 2.80% |  |
Various Subsidiaries of Amerco Real Estate and Uhaul Intl [Member] | Senior mortgages [Member] | Maximum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 6.62% |  |
Various Subsidiaries of Amerco Real Estate and Uhaul Intl [Member] | Real estate loans (revolving credit) [Member] | Amerco [Member] |  |  |
Debt instruments, interest rate, effective percentage: |  |  |
LIBOR | 0.11% |  |
Debt instruments, face, payment, and remaining balance amount: |  |  |
Line of credit facility, maximum borrowing capacity | $ 385,000 |  |
Notes, loans and leases payable | $ 385,000 |  |
Various Subsidiaries of Amerco Real Estate and Uhaul Intl [Member] | Real estate loans (revolving credit) [Member] | Amerco [Member] | Minimum [Member] |  |  |
Debt instruments, interest rate, effective percentage: |  |  |
Applicable margin interest rate | 1.25% |  |
Sum of LIBOR and margin, maximum rate | 1.36% |  |
Various Subsidiaries of Amerco Real Estate and Uhaul Intl [Member] | Real estate loans (revolving credit) [Member] | Amerco [Member] | Maximum [Member] |  |  |
Debt instruments, interest rate, effective percentage: |  |  |
Applicable margin interest rate | 1.50% |  |
Sum of LIBOR and margin, maximum rate | 1.61% |  |
Various Subsidiaries of Amerco Real Estate and Uhaul Intl [Member] | Rental Truck Revolvers [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 2.36% |  |
Debt instruments, face, payment, and remaining balance amount: |  |  |
Line of credit facility, maximum borrowing capacity | $ 590,000 |  |
Notes, loans and leases payable | 535,000 |  |
Amount held at fixed interest rate | $ 100,000 |  |
Various Subsidiaries of Amerco Real Estate and Uhaul Intl [Member] | Rental Truck Revolvers [Member] | Minimum [Member] |  |  |
Debt instruments, interest rate, effective percentage: |  |  |
LIBOR | 0.11% |  |
Applicable margin interest rate | 1.15% |  |
Sum of LIBOR and margin, maximum rate | 1.27% |  |
Various Subsidiaries of Amerco Real Estate and Uhaul Intl [Member] | Rental Truck Revolvers [Member] | Maximum [Member] |  |  |
Debt instruments, interest rate, effective percentage: |  |  |
LIBOR | 0.12% |  |
Applicable margin interest rate | 1.25% |  |
Sum of LIBOR and margin, maximum rate | 1.36% |  |
Amerco Real Estate Company [Member] | Working capital loans two [Member] |  |  |
Debt instruments, interest rate, effective percentage: |  |  |
LIBOR | 0.11% |  |
Applicable margin interest rate | 1.38% |  |
Sum of LIBOR and margin, maximum rate | 1.49% |  |
Unused capacity fee | 0.30% |  |
Debt instruments, face, payment, and remaining balance amount: |  |  |
Aggregate borrowing capacity, amount | $ 200,000 |  |
Line of credit facility, maximum borrowing capacity | 300,000 |  |
Line of credit facility, remaining borrowing capacity | 150,000 |  |
Amerco, Us Bank, National Association, Trustee [Member] | Amerco [Member] |  |  |
Debt instruments, face, payment, and remaining balance amount: |  |  |
Notes, loans and leases payable | 88,600 |  |
Subsidiary holdings of parent company debt | $ 2,500 |  |
Amerco, Us Bank, National Association, Trustee [Member] | Amerco [Member] | Minimum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 2.25% |  |
Debt instruments, issuance and maturity dates: |  |  |
Debt instrument, maturity year | 2021 |  |
Amerco, Us Bank, National Association, Trustee [Member] | Amerco [Member] | Maximum [Member] |  |  |
Debt instruments, interest rate, stated percentage: |  |  |
Debt instrument, interest rate, stated percentage | 8.00% |  |
Debt instruments, issuance and maturity dates: |  |  |
Debt instrument, maturity year | 2049 |  |
Life Insurance [Member] | FHLB [Member] |  |  |
Federal Home Loan Bank, Advances, Activity for the year [Abstract] |  |  |
Deposit amount |  |  | $ 70,500
Available for sale equity securities, noncurrent |  |  | 153,700
Available for sale equity securities pledged as collateral |  |  | $ 78,800
Life Insurance [Member] | FHLB [Member] | Minimum [Member] |  |  |
Federal Home Loan Bank, Advances, Activity for the year [Abstract] |  |  |
Deposit interest rate |  |  | 0.00%
Life Insurance [Member] | FHLB [Member] | Maximum [Member] |  |  |
Federal Home Loan Bank, Advances, Activity for the year [Abstract] |  |  |
Deposit interest rate |  |  | 2.67%

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