v3.26.1
Property, plant and equipment (Details Textual) - INR (₨)
₨ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disclosure of property, plant and equipments [Abstract]    
Contractual commitments for acquisition of property, plant and equipment ₨ 22,468 ₨ 7,222
Property, plant and equipment, pledged as security 19,484 15,566
Borrowing costs capitalised ₨ 150 ₨ 515