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Investment in equity accounted investees (Details Textual)
₨ in Millions
12 Months Ended
Mar. 31, 2022
INR (₨)
Mar. 31, 2022
USD ($)
Mar. 31, 2021
INR (₨)
Mar. 31, 2020
INR (₨)
Investments accounted for using equity method [Line Items]        
Dividends received from investments accounted for using equity method ₨ 392
Kunshan Rotam Reddy Pharmaceuticals Co. Limited [Member]        
Investments accounted for using equity method [Line Items]        
Proportion of ownership interest in joint venture 51.30% 51.30% 51.30% 51.30%