v3.26.1
Investments (Details)
₨ in Millions, $ in Millions
Mar. 31, 2026
INR (₨)
Mar. 31, 2026
USD ($)
Mar. 31, 2025
INR (₨)
Investment in debt securities - unquoted      
Investment ₨ 447   ₨ 404
Less: Provision for Investment (26)   0
Investments in subsidiaries, joint ventures and associates 1,405 $ 15 1,229
Towards procurement of private power under Power Purchase Agreements [Member] | Vashi Railway Station Commercial Complex Limited [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares [1] 0   0
Towards procurement of private power under Power Purchase Agreements [Member] | Sarayu Clean Gen Private Limited [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 2   2
Towards procurement of private power under Power Purchase Agreements [Member] | Tasoula Energy Private Limited [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 225   225
Towards procurement of private power under Power Purchase Agreements [Member] | VEH Srishti Energy Private Limited [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 375   375
Towards procurement of private power under Power Purchase Agreements [Member] | Sunsure Solarpark Eighteen Private Limited [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 100   10
Towards procurement of private power under Power Purchase Agreements [Member] | Murli Enery Private Limited [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 49   0
Towards others [Member] | Padvest Corporation [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 4   4
Towards others [Member] | Digifresh Corporation [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 19   17
Towards others [Member] | The Gizmo App Company [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 21   21
Towards others [Member] | Chatter Inc [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 14   13
Towards others [Member] | Passerine Technologies Inc [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 19   17
Towards others [Member] | Cloudfabrix Software Inc [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares 142   128
Towards others [Member] | Sylvie Unlimited Inc [Member]      
Investment in equity instruments - unquoted      
Investment in equity shares ₨ 14   ₨ 13
[1] below the rounding off norm adopted by the Group.