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Employee benefits (Details 3) - INR (₨)
₨ in Thousands
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Changes in net defined benefit liability (asset) [abstract]      
Projected benefit obligation at the beginning of the year ₨ 382,492 ₨ 298,903 ₨ 216,006
Service cost 69,828 62,318 47,050
Interest cost 27,329 21,854 13,926
Remeasurements - Actuarial (gain) / loss 7,836 21,184 47,703
Benefits paid (41,621) (21,767) (25,782)
Projected benefit obligation at the end of the year ₨ 445,864 ₨ 382,492 ₨ 298,903