| Quarterly Financials |  Jun 2018   |  Sept 2018   |  Dec 2018   |  Mar 2019   |  Jun 2019   |  Sept 2019   |  Dec 2019   |  Mar 2020   |  Jun 2020   |  Sept 2020   |  Dec 2020   |  Mar 2021   |  Jun 2021   |  Sept 2021   |  Dec 2021   |  Mar 2022   |  Jun 2022   |  Sept 2022   |  Dec 2022   |  Mar 2023   |  Jun 2023   |  Sept 2023   |  Dec 2023   |  Mar 2024   |  Jun 2024   |  Sept 2024   |  Dec 2024   |  Mar 2025   |  Jun 2025   | 
|  Revenue  |  354   |  347   |  384   |  353   |  387   |  395   |  381   |  363   |  365   |  398   |  369   |  434   |  439   |  507   |  533   |  599   |  673   |  620   |  566   |  550   |  500   |  534   |  463   |  457   |  507   |  535   |  517   |  511   |  608   | 
| Expenses |  258   |  267   |  290   |  260   |  286   |  300   |  316   |  301   |  302   |  330   |  316   |  356   |  356   |  420   |  445   |  479   |  557   |  545   |  495   |  488   |  452   |  490   |  436   |  408   |  469   |  508   |  496   |  478   |  553   | 
|  EBITDA  |  97   |  80   |  94   |  94   |  101   |  95   |  64   |  62   |  63   |  68   |  53   |  78   |  83   |  87   |  88   |  120   |  116   |  74   |  71   |  62   |  48   |  44   |  27   |  49   |  38   |  27   |  21   |  34   |  55   | 
| Operating Profit % |  24 %  |  20 %  |  21 %  |  24 %  |  24 %  |  22 %  |  15 %  |  12 %  |  16 %  |  15 %  |  11 %  |  12 %  |  14 %  |  11 %  |  13 %  |  16 %  |  16 %  |  11 %  |  11 %  |  9 %  |  8 %  |  5 %  |  3 %  |  6 %  |  2 %  |  4 %  |  3 %  |  5 %  |  8 %  | 
| Depreciation |  13   |  14   |  15   |  14   |  15   |  15   |  16   |  16   |  15   |  15   |  15   |  16   |  16   |  16   |  16   |  17   |  16   |  17   |  17   |  17   |  18   |  19   |  19   |  20   |  19   |  20   |  21   |  21   |  20   | 
| Interest |  6   |  6   |  10   |  9   |  7   |  7   |  7   |  7   |  7   |  7   |  5   |  7   |  5   |  3   |  3   |  3   |  1   |  1   |  1   |  1   |  0   |  0   |  1   |  0   |  0   |  0   |  0   |  1   |  1   | 
|  Profit Before Tax  |  78   |  61   |  70   |  70   |  79   |  73   |  41   |  38   |  41   |  46   |  33   |  55   |  63   |  68   |  69   |  101   |  98   |  57   |  54   |  44   |  29   |  25   |  7   |  29   |  19   |  7   |  1   |  12   |  34   | 
| Tax |  23   |  19   |  23   |  21   |  25   |  17   |  9   |  -31   |  11   |  11   |  7   |  4   |  10   |  10   |  13   |  21   |  22   |  17   |  13   |  10   |  8   |  5   |  -1   |  3   |  3   |  2   |  1   |  5   |  10   | 
| Net Profit |  54   |  42   |  47   |  49   |  54   |  56   |  32   |  69   |  30   |  35   |  26   |  51   |  52   |  58   |  56   |  80   |  76   |  40   |  40   |  34   |  22   |  20   |  9   |  26   |  16   |  5   |  -0   |  6   |  25   | 
| EPS in ₹ |  19.93   |  15.35   |  17.07   |  17.91   |  19.38   |  19.09   |  11.97   |  24.48   |  10.28   |  12.13   |  9.26   |  18.11   |  18.81   |  4.16   |  4.08   |  5.87   |  5.55   |  2.88   |  2.90   |  2.38   |  1.55   |  1.38   |  0.74   |  1.87   |  1.09   |  0.33   |  0.06   |  0.43   |  1.73   | 












