XML 186 R173.htm IDEA: XBRL DOCUMENT v3.5.0.2
Derivative Instruments Measured at Fair Value on Recurring Basis (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2016
INR (₨)
Mar. 31, 2016
USD ($)
Mar. 31, 2015
INR (₨)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative assets ₨ 85,223.0 $ 1,286.4 ₨ 72,415.7
Derivative liabilities 78,582.4 $ 1,186.1 71,767.5
Fair Value, Measurements, Recurring      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative assets 85,223.0   72,415.7
Derivative liabilities 78,582.4   71,767.5
Fair Value, Measurements, Recurring | Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative assets 0.0   0.0
Derivative liabilities 0.0   0.0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant other observable inputs (Level 2)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative assets 85,223.0   72,415.7
Derivative liabilities 78,582.4   71,767.5
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant unobservable inputs (Level 3)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative assets 0.0   0.0
Derivative liabilities ₨ 0.0   ₨ 0.0