v3.26.1
Share-based payments (Details 4) - SISL Employee Stock Option Plan 2025 [Member]
12 Months Ended
Mar. 31, 2026
yr
₨ / shares
Mar. 31, 2025
yr
₨ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Risk free interest rates 6.45% 0.00%
Expected life | yr 5 0
Volatility 15.00% 0.00%
Dividend yield 0.00% 0.00%
Exercise price ₨ 150 ₨ 0
Share price on the date of grant ₨ 150 ₨ 0