v3.25.2
Business Developments (Acquisition of PT Mandala Multifinance Tbk) (Details) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 13, 2024
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2025
Business Developments [Line Items]        
Goodwill   ¥ 493,758 ¥ 296,772 ¥ 558,164
PT Adira Dinamika Multi Finance Tbk | PT Mandala Multifinance Tbk        
Business Developments [Line Items]        
Ownership percentage by NCI owners 10.00%      
PT Mandala Multifinance Tbk        
Business Developments [Line Items]        
Percentage of voting interests acquired 70.60%      
Payments to acquire businesses ¥ 59,025      
Assets acquired 80,236      
Net loans receivables acquired 47,937      
Liabilities acquired 34,676      
Long-term debt liabilities acquired 28,319      
Goodwill 31,795      
Intangible assets ¥ 15,139      
Weighted average amortization period, in years 5 years 3 months 18 days      
Noncontrolling interests, recorded on acquisition ¥ 10,448      
Finite-lived intangible assets, purchase accounting adjustments   ¥ 2,748 ¥ 2,630  
PT Mandala Multifinance Tbk | Dealer relationships        
Business Developments [Line Items]        
Intangible assets ¥ 10,602      
Weighted average amortization period, in years 8 years      
PT Mandala Multifinance Tbk | MUFG Bank and ADMF        
Business Developments [Line Items]        
Percentage of voting interests acquired 80.60%      
PT Mandala Multifinance Tbk | PT Adira Dinamika Multi Finance Tbk        
Business Developments [Line Items]        
Payments to acquire investments ¥ 8,360      
Acquired loan at fair value at acquisition date 42,152      
Acquired loan unpaid principal balance 42,633      
Contractual loans not expected to be collected ¥ 1,450