Consolidated Statement of Changes in Stockholders' Equity Parenthetical (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Series A Preferred Stock [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Preferred stock dividends, Series A, per share			$ 0.53
Uhaul Common Stock [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Common stock dividends, per share	$ 1.00	$ 5.00	$ 1.00