| Annual Financials |  2015   |  2016   |  2017   |  2018   |  2019   |  2020   |  2021   |  2022   |  2023   |  2024   |  2025   |  TTM   | 
|  Revenue  |  233   |  246   |  231   |  263   |  285   |  233   |  223   |  236   |  235   |  247   |  245   |  255   | 
| Expenses |  199   |  210   |  189   |  220   |  240   |  193   |  186   |  202   |  200   |  214   |  214   |  222   | 
|  EBITDA  |  34   |  36   |  42   |  44   |  45   |  40   |  37   |  34   |  36   |  33   |  31   |  34   | 
| Operating Profit % |  15 %  |  14 %  |  18 %  |  16 %  |  15 %  |  17 %  |  16 %  |  14 %  |  15 %  |  13 %  |  12 %  |  13 %  | 
| Depreciation |  12   |  12   |  13   |  13   |  12   |  13   |  13   |  13   |  13   |  13   |  14   |  13   | 
| Interest |  5   |  2   |  2   |  1   |  1   |  1   |  1   |  2   |  3   |  4   |  6   |  5   | 
|  Profit Before Tax  |  18   |  22   |  27   |  29   |  32   |  26   |  23   |  19   |  19   |  16   |  11   |  16   | 
| Tax |  6   |  7   |  7   |  9   |  11   |  6   |  6   |  5   |  5   |  4   |  5   |  5   | 
| Net Profit |  12   |  16   |  20   |  20   |  21   |  20   |  17   |  14   |  15   |  13   |  6   |  9   | 
| EPS in ₹ |  12.54   |  15.99   |  19.81   |  20.52   |  21.42   |  19.96   |  17.64   |  14.13   |  14.95   |  12.84   |  6.01   |  9.40   | 












