v3.26.1
Property, plant and equipment (Details Textual) - INR (₨)
₨ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disclosure of detailed information about property, plant and equipment [line items]    
Contractual commitments for acquisition of property, plant and equipment ₨ 9,716 ₨ 14,567
Cash outflow for leases 1,825  
Impairment loss recognised in profit or loss, property, plant and equipment 6,038  
Inventory provision 260  
Other development program write down cost 129  
Gain recognized on other income 877  
Impairment loss recognised in profit or loss, intangible assets other than goodwill 406  
Lease liabilities 5,436  
Global Generics-Complex Injectables [Member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Impairment loss recognised in profit or loss, property, plant and equipment 535  
Chimeric Antigen Receptor [Member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Impairment loss recognised in profit or loss, property, plant and equipment 885  
Other development program write down cost 59  
Classes of property, plant and equipment [domain]    
Disclosure of detailed information about property, plant and equipment [line items]    
Interest costs capitalised ₨ 983 ₨ 729
Capitalisation rate of borrowing costs eligible for capitalisation 6.48% 7.01%