v3.25.2
Group information - Additional Information (Detail)
₨ in Millions, $ in Millions
12 Months Ended
Mar. 31, 2025
INR (₨)
Mar. 31, 2024
INR (₨)
Mar. 31, 2025
USD ($)
Disclosure of subsidiaries [line items]      
Non-controlling interests ₨ 18,510 ₨ 16,480 $ 217
RPPL      
Disclosure of subsidiaries [line items]      
Percentage of non controlling interest 3.11% 3.11%  
Non-controlling interests ₨ 4,144 ₨ 3,910