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Rental Expenses and Sub-Lease Income (Detail)
₨ in Millions, $ in Millions
12 Months Ended
Mar. 31, 2022
INR (₨)
Mar. 31, 2022
USD ($)
Mar. 31, 2021
INR (₨)
Mar. 31, 2020
INR (₨)
Operating Leased Assets [Line Items]        
The total minimum lease expense during the year recognized in the consolidated statement of income ₨ 13,866.6 $ 182.8 ₨ 14,244.4 ₨ 13,698.7