Disclosure Of Fair Value Measurement [Text Block]
| Concept | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 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 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 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 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | 
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| Disclosure of fair value measurement [text block] |  | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of fair value measurement of assets [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of fair value measurement of assets [abstract] | |||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of assets [line items] | |||||||||||||||||||||||||||||||
| Assets | — | 
                                                432,419,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                421,695,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Reconciliation of changes in fair value measurement, assets [abstract] | |||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of liabilities [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of fair value measurement of liabilities [abstract] | |||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of liabilities [line items] | |||||||||||||||||||||||||||||||
| Liabilities | — | 
                                                48,620,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                40,468,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Reconciliation of changes in fair value measurement, liabilities [abstract] | |||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of equity [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of fair value measurement of equity [abstract] | |||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of equity [line items] | |||||||||||||||||||||||||||||||
| Equity | — | 
                                                383,799,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                4,684,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                149,388,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                80,386,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1,124,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                31,016,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                96,808,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                20,393,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                382,675,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                381,227,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                4,957,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                79,858,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1,405,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                31,016,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                142,576,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                96,808,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                24,607,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                379,822,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                118,735,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                79,824,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                5,124,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                10,592,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                350,145,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                347,916,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                31,016,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                2,229,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                16,409,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                107,400,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |