Statement Of Changes In Equity [Abstract]
| Concept | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||
| Equity | — | 
                                                54 975
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | 
                                                3 336
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                3 203
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | 
                                                3 601
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                9 000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                35 836
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                51 374
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                52 945
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | 
                                                3 125
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 535
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                9 000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                3 449
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                35 836
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                51 410
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | 
                                                1 816
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                3 125
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                19 765
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                18 277
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 488
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                13 336
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) | 
                                                2 028
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                1 997
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                31,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                1 997
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 681
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 633
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                48,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                1 633
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Comprehensive income | 
                                                2 028
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                1 681
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                22 500
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                31 500
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                31 500
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                9 000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Increase (decrease) through other changes, equity | 
                                                2,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                2,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                2,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                2 035
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                2 035
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                2 035
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |