v3.26.1
Property, plant and equipment (Details 1)
₨ in Millions
Mar. 31, 2026
INR (₨)
Gross carrying amount [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale ₨ 9,708
Gross carrying amount [member] | Plant and machinery [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 7,393
Gross carrying amount [member] | Computer equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 1,083
Gross carrying amount [member] | Fixtures and fittings [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 127
Gross carrying amount [member] | Office equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 348
Gross carrying amount [member] | Building [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 747
Gross carrying amount [member] | Vehicles [Member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 10
Accumulated depreciation and amortisations [Member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 9,708
Accumulated depreciation and amortisations [Member] | Plant and machinery [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 7,393
Accumulated depreciation and amortisations [Member] | Computer equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 1,083
Accumulated depreciation and amortisations [Member] | Fixtures and fittings [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 127
Accumulated depreciation and amortisations [Member] | Office equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 348
Accumulated depreciation and amortisations [Member] | Building [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale 747
Accumulated depreciation and amortisations [Member] | Vehicles [Member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Property, plant and equipment, assets retired from active use and not classified as held for sale ₨ 10