XML 145 R92.htm IDEA: XBRL DOCUMENT v3.24.2
Loans and Allowance for Credit Losses (Narrative) (Detail) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]      
Commitments to extend credit to customers with TDRs   ¥ 101,339  
Credit allowance to borrowers experiencing financial difficulty      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Other commitments ¥ 64,250    
Nonperforming loans      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Decrease from charge-offs in the allowance for credit losses due to loan disposal activity ¥ 15,700 79,900 ¥ 400
Minimum | Close Watch      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Accruing loans contractually past due, in day 90 days    
Commercial      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Significant sales of loans ¥ 2,788,000 2,879,000 2,011,000
Commercial | Minimum      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans contractually past due before being placed on nonaccrual status, in month 1 month    
Loans contractually past due before becoming defaulted loans, period 1 month    
Commercial | Minimum | Close Watch      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Accruing loans contractually past due, in day 90 days    
Commercial | Maximum      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Temporary extensions of maturity dates to nonaccrual loans, in day 90 days    
Residential | Minimum      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans contractually past due before being placed on nonaccrual status, in month 6 months    
Loans contractually past due before becoming defaulted loans, period 6 months    
Residential | Maximum      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Temporary extensions of maturity dates to nonaccrual loans, in day 90 days    
Card | Minimum      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans contractually past due before being placed on nonaccrual status, in month 3 months    
Loans contractually past due before becoming defaulted loans, period 1 month    
Krungsri | Minimum      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans contractually past due before being placed on nonaccrual status, in month 3 months    
Loans contractually past due before becoming defaulted loans, period 6 months    
Krungsri | Minimum | Under-Performing      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Cumulative period of loans for categorizing internal borrower ratings, commencing from the contractual due date, in day 30 days    
Krungsri | Minimum | Non-Performing      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Cumulative period of loans for categorizing internal borrower ratings, commencing from the contractual due date, in day 90 days    
MUAH      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Assets including loans   2,614,535  
Significant sales of loans   ¥ 556,000 ¥ 518,000
MUAH | Minimum      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans contractually past due before being placed on nonaccrual status, in month 3 months    
Loans contractually past due before becoming defaulted loans, period 60 days