v3.26.1
Financial Instruments - Amounts Subject to Enforceable Netting Arrangements (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2026
INR (₨)
Mar. 31, 2026
USD ($)
Mar. 31, 2025
INR (₨)
Derivative [Line Items]      
Derivative assets, gross amounts ₨ 624,206.5 $ 6,652.4 ₨ 179,812.4
Derivative assets, amounts offset 0.0   0.0
Derivative assets, net amounts reported in the balance sheet 624,206.5   179,812.4
Derivative assets, financial instruments 470,626.0   101,801.0
Derivative assets, financial collateral [1] 21,329.1   17,969.6
Derivative assets, net amount 132,251.4 1,409.5 60,041.8
Securities purchased under agreements to resell, gross amounts 421,575.4 4,493.0 349,210.7
Securities purchased under agreements to resell, amounts offset 0.0   0.0
Securities purchased under agreements to resell, net amounts reported in the balance sheet 421,575.4   349,210.7
Securities purchased under agreements to resell, financial instruments 0.0   0.0
Securities purchased under agreements to resell, financial collateral [1] 421,575.4   349,210.7
Securities purchased under agreements to resell, net amount 0.0 0.0 0.0
Derivative liabilities, gross amounts 578,276.3 6,162.9 143,566.1
Derivative liabilities, amounts offset 0.0   0.0
Derivative liabilities, net amounts reported in the balance sheet 578,276.3   143,566.1
Derivative liabilities, financial instruments 470,626.0   101,801.0
Derivative liabilities, financial collateral [1] 16,814.6   10,955.8
Derivative liabilities, net amount 90,835.7 968.1 30,809.3
Securities sold under repurchase agreements, gross amounts 100,000.0 1,065.8 129,190.0
Securities sold under repurchase agreements, amounts offset 0.0   0.0
Securities sold under repurchase agreements, net amounts reported in the balance sheet 100,000.0   129,190.0
Securities sold under repurchase agreements, financial instruments 0.0   0.0
Securities sold under repurchase agreements, financial collateral [1] 100,000.0   129,190.0
Securities sold under repurchase agreements, net amount ₨ 0.0 $ 0.0 ₨ 0.0
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other assets Other assets  
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accrued expenses and other liabilities Accrued expenses and other liabilities  
[1] Comprised of securities and cash collateral. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged.