v3.26.1
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, 2026
Mar. 31, 2025
Mar. 31, 2024
Earnings Per Share [Abstract]      
Net Income attributable to ORIX Corporation Shareholders ¥ 447,265 ¥ 351,630 ¥ 346,132
Adjustment to Net Income (96) (35) (7)
Net income used to calculate basic earnings per share 447,169 351,595 346,125
Adjustment to Net Income 96 35 7
Net income used to calculate diluted earnings per share ¥ 447,265 ¥ 351,630 ¥ 346,132
Weighted-average shares 1,117,160 1,142,503 1,159,367
Effect of dilutive securities      
Stock compensation 2,692 2,275 1,943
Weighted-average shares for diluted EPS computation 1,119,852 1,144,778 1,161,310
Earnings per share for net income attributable to ORIX Corporation Shareholders:      
Basic ¥ 400.27 ¥ 307.74 ¥ 298.55
Diluted ¥ 399.4 ¥ 307.16 ¥ 298.05