Per Share Data (Reconciliation of Differences between Basic and Diluted Earnings Per Share) (Detail) - JPY (¥) ¥ / shares in Units, shares in Thousands, ¥ in Millions	12 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net Income attributable to ORIX Corporation shareholders	¥ 312,135	¥ 192,384	¥ 302,700
Weighted-average shares	1,203,452	1,236,897	1,275,166
Effect of dilutive securities
Stock compensation	1,400	1,197	1,153
Weighted-average shares for diluted EPS computation	1,204,852	1,238,094	1,276,319
Earnings per share for net income attributable to ORIX Corporation shareholders:
Basic	¥ 259.37	¥ 155.54	¥ 237.38
Diluted	¥ 259.07	¥ 155.39	¥ 237.17

The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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