v3.25.2
Sales/transfer of receivables - Summary of Variable Interest Entity Not Primary Beneficiary Disclosures (Detail)
$ in Thousands, ₨ in Millions
Mar. 31, 2025
INR (₨)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
INR (₨)
Mar. 31, 2023
INR (₨)
Assets:        
Assets ₨ 48,187,671.1 $ 564,060,300 ₨ 44,118,573.0 ₨ 25,755,624.0
Liabilities:        
Liabilities 39,564,780.1 463,125,100 36,232,390.2  
Variable Interest Entity, Primary Beneficiary [Member]        
Assets:        
Assets 183,400.0      
Liabilities:        
Liabilities 183,400.0      
Maximum exposure to loss 30,369.3 355,500    
Debt interests 17,879.9 209,300    
Commitments, Guarantees, Others 12,489.4 146,200 0.0  
Variable Interest Entity, Primary Beneficiary [Member] | Long-term debt [Member]        
Liabilities:        
Liabilities 165,476.8 1,937,000    
Variable Interest Entity, Primary Beneficiary [Member] | Accrued expenses and other liabilities [Member]        
Liabilities:        
Liabilities 108.1 1,300    
Variable Interest Entity, Primary Beneficiary [Member] | Loans [Member]        
Assets:        
Assets 183,356.8 2,146,300 ₨ 0.0  
Variable Interest Entity, Primary Beneficiary [Member] | Other Assets [Member]        
Assets:        
Assets ₨ 108.1 $ 1,300