v3.25.2
Loans - Additional Information (Detail)
₨ in Millions, $ in Millions
12 Months Ended
Mar. 31, 2025
INR (₨)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
INR (₨)
Mar. 31, 2025
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans provided as collateral for borrowings ₨ 2,750,841.6   ₨ 2,288,842.6 $ 32,199.9
Purchased financing receivable outstanding 1,691.8 $ 19.8 2,600.7  
Loans receivable restructured due to unexpected event 45,700.0   72,900.0 $ 500.0
Retail Loans [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans receivable restructured due to unexpected event 68,600.0   42,900.0  
Wholesale Loans [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans receivable restructured due to unexpected event ₨ 4,300.0   ₨ 2,800.0  
Current Loans [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Number of days past due up to which loans 90 days     90 days
Crop related agricultural loans        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Number of days past due up to which loans 366 days     366 days