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Balances Receivable from Related Parties (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2018
INR (₨)
Mar. 31, 2018
USD ($)
Mar. 31, 2017
INR (₨)
Related Party Transaction [Line Items]      
Loans ₨ 55.0 $ 0.8 ₨ 38.0
Other assets 2,605.4 40.0 2,488.6
Total 2,660.4 $ 40.8 2,526.6
Principal Owner      
Related Party Transaction [Line Items]      
Other assets 288.1   233.1
Total 288.1   233.1
Others      
Related Party Transaction [Line Items]      
Loans 55.0   38.0
Other assets 2,317.3   2,255.5
Total ₨ 2,372.3   ₨ 2,293.5