v3.26.1
Estimated fair value of financial instruments - Comparison of Fair Value and Carrying Value of Financial Instruments (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2026
INR (₨)
Mar. 31, 2026
USD ($)
Mar. 31, 2025
INR (₨)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
INR (₨)
Mar. 31, 2023
INR (₨)
Financial Assets:            
Cash and due from banks, and restricted cash ₨ 2,547,835.1 $ 27,153.7 ₨ 1,982,929.8 $ 21,133.2 ₨ 2,086,031.4 ₨ 1,387,395.2
Securities purchased under agreements to resell 421,575.4 4,493.0 349,210.7      
Loans 30,993,886.5 330,319.6 28,102,981.8      
Accrued interest receivable 328,559.5 3,501.7 322,788.9      
Other assets 2,190,761.3 23,348.2 1,978,448.8      
Financial Liabilities :            
Interest-bearing deposits 27,497,592.2 293,057.6 23,994,357.2      
Non-interest-bearing deposits 3,504,125.5 37,345.5 3,116,596.7      
Securities sold under repurchase agreements 100,000.0 1,065.8 129,190.0      
Short-term borrowings 1,349,648.4 14,384.0 1,306,013.1      
Accrued interest payable 268,164.2 2,857.9 258,311.8      
Long-term debt 5,119,434.0 54,560.7 5,866,163.2      
Accrued expenses and other liabilities 1,334,597.9 14,223.6 850,899.0      
Separate account liabilities 1,051,916.1 11,210.9 1,016,281.4 $ 10,831.2 ₨ 955,416.3  
Liabilities on policies in force [1] 44,441.1 473.6 47,316.6      
Financial Assets:            
Cash and due from banks, and restricted cash 2,547,835.1 27,153.7 1,982,929.8      
Investments held for trading 848,427.6 9,042.2 625,388.5      
Investments available for sale debt securities 10,247,500.8 109,213.5 9,910,174.3      
Securities purchased under agreements to resell 421,575.4 4,493.0 349,210.7      
Loans 31,118,774.9 331,650.6 28,129,341.2      
Accrued interest receivable 328,559.5 3,501.7 322,788.9      
Separate account assets 1,051,916.1 11,210.9 1,016,281.4      
Other assets 2,185,073.6 23,287.6 1,972,882.8      
Financial Liabilities :            
Securities sold under repurchase agreements 100,000.0 1,065.8 129,190.0      
Short-term borrowings 1,343,990.0 14,323.7 1,305,341.6      
Accrued interest payable 268,164.2 2,857.9 258,311.8      
Long-term debt 5,124,244.2 54,612.0 5,936,593.3      
Accrued expenses and other liabilities 1,334,597.9 14,223.6 850,899.1      
Separate account liabilities 1,051,916.1 11,210.9 1,016,281.4      
Liabilities on policies in force [1] 44,441.1 473.6 47,316.6      
Interest Bearing Deposits Liabilities            
Financial Liabilities :            
Interest and (Non-Interest)-bearing deposits 27,657,894.0 294,766.0 24,119,101.2      
Non-interest-bearing deposits            
Financial Liabilities :            
Interest and (Non-Interest)-bearing deposits 3,504,125.5 $ 37,345.5 3,116,596.7      
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1)            
Financial Assets:            
Cash and due from banks, and restricted cash 2,547,835.1   1,982,929.8      
Investments held for trading 388,678.9   340,388.3      
Investments available for sale debt securities 262,623.5   1,435,936.3      
Securities purchased under agreements to resell 0.0   0.0      
Loans 0.0   0.0      
Accrued interest receivable 0.0   0.0      
Separate account assets 814,016.6   873,154.4      
Other assets 25,678.2   20,404.1      
Financial Liabilities :            
Securities sold under repurchase agreements 0.0   0.0      
Short-term borrowings 0.0   0.0      
Accrued interest payable 0.0   0.0      
Long-term debt 0.0   0.0      
Accrued expenses and other liabilities 0.0   0.0      
Separate account liabilities 0.0   0.0      
Liabilities on policies in force [1] 0.0   0.0      
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1) | Interest Bearing Deposits Liabilities            
Financial Liabilities :            
Interest and (Non-Interest)-bearing deposits 0.0   0.0      
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1) | Non-interest-bearing deposits            
Financial Liabilities :            
Interest and (Non-Interest)-bearing deposits 0.0   0.0      
Fair Value Measurements Using Significant other observable inputs (Level 2)            
Financial Assets:            
Cash and due from banks, and restricted cash 0.0   0.0      
Investments held for trading 409,980.5   250,009.3      
Investments available for sale debt securities 9,871,669.4   8,360,598.8      
Securities purchased under agreements to resell 421,575.4   349,210.7      
Loans 6,745,772.2   5,801,666.4      
Accrued interest receivable 328,517.2   322,729.4      
Separate account assets 237,899.5   143,127.0      
Other assets 2,115,251.8   1,950,178.0      
Financial Liabilities :            
Securities sold under repurchase agreements 100,000.0   129,190.0      
Short-term borrowings 1,343,990.0   1,305,341.6      
Accrued interest payable 268,164.2   258,311.8      
Long-term debt 5,124,244.2   5,936,593.3      
Accrued expenses and other liabilities 1,333,035.4   849,510.6      
Separate account liabilities 1,051,916.1   1,016,281.4      
Liabilities on policies in force [1] 44,441.1   47,316.6      
Fair Value Measurements Using Significant other observable inputs (Level 2) | Interest Bearing Deposits Liabilities            
Financial Liabilities :            
Interest and (Non-Interest)-bearing deposits 27,657,894.0   24,119,101.2      
Fair Value Measurements Using Significant other observable inputs (Level 2) | Non-interest-bearing deposits            
Financial Liabilities :            
Interest and (Non-Interest)-bearing deposits 3,504,125.5   3,116,596.7      
Fair Value Measurements Using Significant unobservable inputs (Level 3)            
Financial Assets:            
Cash and due from banks, and restricted cash 0.0   0.0      
Investments held for trading 49,768.2   34,990.9      
Investments available for sale debt securities 113,207.9   113,639.2      
Securities purchased under agreements to resell 0.0   0.0      
Loans 24,373,002.7   22,327,674.8      
Accrued interest receivable 42.3   59.5      
Separate account assets 0.0   0.0      
Other assets 44,143.6   2,300.7      
Financial Liabilities :            
Securities sold under repurchase agreements 0.0   0.0      
Short-term borrowings 0.0   0.0      
Accrued interest payable 0.0   0.0      
Long-term debt 0.0   0.0      
Accrued expenses and other liabilities 1,562.5   1,388.5      
Separate account liabilities 0.0   0.0      
Liabilities on policies in force [1] 0.0   0.0      
Fair Value Measurements Using Significant unobservable inputs (Level 3) | Interest Bearing Deposits Liabilities            
Financial Liabilities :            
Interest and (Non-Interest)-bearing deposits 0.0   0.0      
Fair Value Measurements Using Significant unobservable inputs (Level 3) | Non-interest-bearing deposits            
Financial Liabilities :            
Interest and (Non-Interest)-bearing deposits ₨ 0.0   ₨ 0.0      
[1] The liabilities on policies in force includes only the fair value of contracts that are classified as insurance contracts.