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Balances Receivable from Related Parties (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2021
INR (₨)
Mar. 31, 2021
USD ($)
Mar. 31, 2020
INR (₨)
Related Party Transaction [Line Items]      
Loans ₨ 10.6 $ 0.1 ₨ 26.5
Other assets 3,018.6 41.3 1,716.4
Total 3,029.2 $ 41.4 1,742.9
Principal Owner      
Related Party Transaction [Line Items]      
Loans 0.0   0.0
Other assets 1,390.9   449.5
Total 1,390.9   449.5
Others      
Related Party Transaction [Line Items]      
Loans 10.6   26.5
Other assets 1,627.7   1,266.9
Total ₨ 1,638.3   ₨ 1,293.4