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ORIX Corporation Shareholders' Equity - Additional Information (Detail) - Officer's Compensation Board Incentive Plan - JPY (¥)
¥ in Millions
6 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Class of Stock [Line Items]    
Total dividends paid ¥ 189 ¥ 197
Effective Date    
Class of Stock [Line Items]    
Total dividends paid ¥ 376 ¥ 317