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Inventories (Details)
₨ in Millions, $ in Millions
Mar. 31, 2022
INR (₨)
Mar. 31, 2022
USD ($)
Mar. 31, 2021
INR (₨)
Classes of current inventories [abstract]      
Raw materials ₨ 13,707   ₨ 12,287
Work-in-progress 12,886   10,009
Finished goods (includes stock-in-trade) 20,491   19,829
Packing materials, stores and spares 3,800   3,287
Total Inventories ₨ 50,884 $ 671 ₨ 45,412