Subsequent Events (Narratives) (Details)	3 Months Ended		6 Months Ended
	Sep. 30, 2023 $ / shares shares	Sep. 30, 2022 $ / shares	Sep. 30, 2023 $ / shares shares	Sep. 30, 2022 $ / shares	Sep. 30, 2023 د.إ / shares shares	Mar. 31, 2023 د.إ / shares shares
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common Stock, Dividends, Per Share, Declared | $ / shares	$ 0.04	$ 0.50	$ 0.08	$ 1.00
Nonvoting Common Stock [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common Stock, Par or Stated Value Per Share | د.إ / shares					د.إ 0.001	د.إ 0.001
Common Stock, Shares Authorized | shares	250,000,000		250,000,000		250,000,000	250,000,000
Amerco Common Stock [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common Stock, Par or Stated Value Per Share | $ / shares	$ 0.25		$ 0.25
Common Stock, Shares Authorized | shares	250,000,000		250,000,000		250,000,000