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Property and Equipment by Asset Category (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2018
INR (₨)
Mar. 31, 2018
USD ($)
Mar. 31, 2017
INR (₨)
Property, Plant and Equipment [Line Items]      
Land and premises ₨ 17,992.1 $ 276.4 ₨ 16,987.3
Software and systems 24,554.4 377.1 22,004.6
Equipment and furniture 64,927.1 997.2 60,004.5
Property and equipment, at cost 107,473.6 1,650.7 98,996.4
Less: Accumulated depreciation 68,505.5 1,052.2 60,027.1
Property and equipment, net ₨ 38,968.1 $ 598.5 ₨ 38,969.3