Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
ASSETS:
Cash and cash equivalents	$ 1,153,161	$ 1,534,544
Reinsurance recoverables and trade receivables, net	253,638	215,908
Inventories, net	157,625	150,940
Prepaid Expense	248,147	246,082
Fixed maturities - available for sale	2,395,890	2,442,504
Equity securities, at estimated fair value	74,066	66,274
Investments, other	638,423	633,936
Deferred policy acquisition costs, net	119,806	121,224
Other assets	123,878	111,743
Right of use Assets - Financing	265,744	289,305
Right of use Assets - Operating	53,255	53,712
Related Parties Amounts Due	67,254	57,934
Subtotal assets	18,964,066	18,185,784
Property, plant and equipment, at cost:
Land	1,727,668	1,670,033
Buildings and improvements	8,591,016	8,237,354
Furniture and equipment	1,014,086	1,003,770
Property, plant and equipment (gross)	5,550,887	5,924,106
Less: Accumulated depreciation	(5,209,526)	(5,051,132)
Total property, plant and equipment	13,754,540	13,134,652
Total assets	19,305,427	19,058,758
Liabilities:
Accounts payable and accrued expenses	833,296	783,084
Notes, loans and leases payable	6,280,305	6,271,362
Operating lease liability	54,485	55,032
Policy benefits and losses, claims and loss expenses payable	841,861	849,113
Liabilities from investment contracts	2,406,464	2,411,352
Other policyholders' funds and liabilities	5,832	18,070
Deferred income	62,587	51,175
Deferred Income Tax Liabilities, Net	1,470,156	1,447,125
Total liabilities	11,954,986	11,886,313
Commitments and contingencies (notes 4 and 9)
Stockholders' equity:
Additional paid-in capital	462,548	462,548
Accumulated other comprehensive loss	(231,813)	(223,216)
Retained earnings	7,786,683	7,600,090
Total stockholders' equity	7,350,441	7,172,445
Total liabilities and stockholders' equity		19,058,758
Series A Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value, issued	0	0
Series B Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value, issued	0	0
Serial Common Stock [Member]
Stockholders' equity:
Common stock, value, issued	0	0
Amerco Common Stock [Member]
Stockholders' equity:
Common stock, value, issued	10,497	10,497
Nonvoting Common Stock [Member]
Stockholders' equity:
Common stock, value, issued	176	176
Common Stock in Treasury [Member]
Stockholders' equity:
Treasury stock, value	(525,653)	(525,653)
Preferred Stock in Treasury [Member]
Stockholders' equity:
Treasury stock, value	(151,997)	(151,997)
Rental Trailers and Other Rental Equipment [Member]
Property, plant and equipment, at cost:
Property subject to or available for operating lease, gross	960,853	936,303
Rental Trucks [Member]
Property, plant and equipment, at cost:
Property subject to or available for operating lease, gross	$ 6,670,443	$ 6,338,324