v3.26.1
Short-Term Borrowings (Detail)
₨ in Millions, $ in Millions
12 Months Ended
Mar. 31, 2026
INR (₨)
Mar. 31, 2026
USD ($)
Mar. 31, 2025
INR (₨)
Mar. 31, 2026
USD ($)
Short-term Debt [Line Items]        
Short-term borrowings ₨ 1,349,648.4   ₨ 1,306,013.1 $ 14,384.0
Maximum amount outstanding 1,444,995.3 $ 15,400.1 1,790,800.5  
Average amount outstanding ₨ 1,223,313.3 $ 13,037.5 ₨ 1,360,759.8  
Weighted average interest rate 5.40%   6.70% 5.40%
Borrowed in the call market        
Short-term Debt [Line Items]        
Short-term borrowings ₨ 3,311.7   ₨ 9,763.7 $ 35.3
Term borrowings from institutions/banks        
Short-term Debt [Line Items]        
Short-term borrowings 972,415.3   1,080,206.2 10,363.6
Foreign currency borrowings        
Short-term Debt [Line Items]        
Short-term borrowings 328,152.0   216,043.2 3,497.3
Bills rediscounted        
Short-term Debt [Line Items]        
Short-term borrowings ₨ 45,769.4   ₨ 0.0 $ 487.8