Share-based payments (Details 1)	12 Months Ended
Mar. 31, 2026 ₨ / shares	Mar. 31, 2025 ₨ / shares	Mar. 31, 2024 ₨ / shares
Disclosure of Share-based payments [Abstract]
Number of options, Opening balance	1,341,682	6,329,187	6,972,978
Number of options, Granted during the year	0	8,630,671	0
Number of options, Forfeited during the year	(217,450)	(1,426,246)	(146,700)
Number of options, Expired during the year	(146,214)	(11,420,954)	0
Number of options, Exercised during the year	(505,290)	(770,976)	(497,091)
Number of options, Closing balance	472,728	1,341,682	6,329,187
Number of options, Exercisable at the end of the year	390,000	1,043,802	5,183,587
Weighted average exercise price, Opening balance	₨ 60.06	₨ 90.12	₨ 92.6
Weighted average exercise price, Granted during the year	0	60.06	0
Weighted average exercise price, Forfeited during the year	60.06	60.06	90.12
Weighted average exercise price, Expired during the year	60.06	90.12	0
Weighted average exercise price, Exercised during the year	74.13	60.06	90.12
Weighted average exercise price, Closing balance	74.13	60.06	90.12
Weighted average exercise price, Exercisable at the end of the year	₨ 74.13	₨ 60.06	₨ 90.12

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