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Schedule I - Condensed Financial Information Of AMERCO (Statements of Comprehensive Income) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015
Net earnings | $ 398,424 | $ 489,001 | $ 356,741
Amerco [Member] |  |  |
Net earnings | 398,424 | 489,001 | 356,741
Other comprehensive income (loss) | 9,289 | (26,160) | 19,558
Total comprehensive income | $ 407,713 | $ 462,841 | $ 376,299

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