| 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  |  85   |  53   |  90   |  85   |  129   |  51   |  78   |  71   |  82   |  81   |  129   |  132   |  130   |  130   |  134   |  171   |  163   |  103   |  207   |  167   |  204   |  123   |  123   |  86   |  119   |  64   |  110   |  100   |  106   | 
| Expenses |  79   |  47   |  85   |  82   |  123   |  45   |  73   |  66   |  76   |  76   |  121   |  122   |  121   |  120   |  126   |  161   |  156   |  98   |  195   |  234   |  190   |  117   |  115   |  85   |  106   |  58   |  100   |  92   |  97   | 
|  EBITDA  |  6   |  5   |  5   |  3   |  7   |  5   |  5   |  6   |  6   |  6   |  8   |  10   |  9   |  10   |  8   |  10   |  6   |  5   |  12   |  -67   |  15   |  6   |  8   |  1   |  13   |  6   |  10   |  8   |  9   | 
| Operating Profit % |  6 %  |  7 %  |  5 %  |  5 %  |  5 %  |  10 %  |  6 %  |  8 %  |  7 %  |  7 %  |  6 %  |  8 %  |  7 %  |  7 %  |  6 %  |  5 %  |  4 %  |  5 %  |  6 %  |  -40 %  |  7 %  |  5 %  |  6 %  |  -0 %  |  11 %  |  9 %  |  9 %  |  7 %  |  8 %  | 
| Depreciation |  1   |  1   |  2   |  1   |  2   |  2   |  2   |  2   |  2   |  2   |  2   |  2   |  2   |  2   |  2   |  3   |  3   |  3   |  3   |  3   |  3   |  3   |  3   |  3   |  4   |  3   |  4   |  4   |  3   | 
| Interest |  3   |  3   |  2   |  2   |  3   |  3   |  2   |  2   |  2   |  2   |  2   |  2   |  2   |  2   |  2   |  3   |  3   |  3   |  4   |  3   |  3   |  2   |  2   |  2   |  2   |  2   |  1   |  1   |  1   | 
|  Profit Before Tax  |  2   |  1   |  1   |  0   |  2   |  1   |  2   |  2   |  2   |  2   |  4   |  6   |  6   |  6   |  4   |  4   |  1   |  0   |  5   |  -73   |  9   |  1   |  4   |  -4   |  8   |  1   |  6   |  3   |  5   | 
| Tax |  1   |  0   |  1   |  -1   |  1   |  0   |  0   |  1   |  1   |  1   |  1   |  1   |  2   |  1   |  1   |  1   |  0   |  0   |  2   |  3   |  1   |  0   |  1   |  3   |  2   |  -1   |  1   |  -3   |  0   | 
| Net Profit |  1   |  1   |  0   |  1   |  1   |  0   |  1   |  1   |  1   |  2   |  3   |  5   |  4   |  5   |  3   |  2   |  1   |  0   |  3   |  -75   |  8   |  1   |  3   |  -7   |  6   |  2   |  5   |  6   |  5   | 
| EPS in ₹ |  0.40   |  0.46   |  0.06   |  0.26   |  0.49   |  0.15   |  0.49   |  0.37   |  0.51   |  0.56   |  1.09   |  1.62   |  1.29   |  1.66   |  1.08   |  0.83   |  0.16   |  0.05   |  1.10   |  -25.81   |  2.72   |  0.32   |  0.85   |  -2.32   |  2.11   |  0.50   |  1.54   |  2.01   |  1.78   | 












