Statement Of Financial Position [Abstract]
| Concept | 
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        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  | 
                            
                        
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                143 067
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                185 443
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other financial assets | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                482 403
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                428 836
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Current tax assets | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                51 660
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Deferred tax assets | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                51 660
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Cash and cash equivalents | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                228 905
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                2 005 242
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                1 129 107
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | 
| Assets | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                3 892 431
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                14 979 603
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Equity and liabilities [abstract] | ||||||||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                1 183 019
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                1 183 019
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-controlling interests | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                808 969
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Equity | 
                                        
                                             
                                                28 889
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                323 337
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1 183 019
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                414 796
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1 892 263
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2 064 692
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                20 794
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                808 969
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                323 337
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1 183 019
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                110 364
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                27 839
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                436 395
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                225 260
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                20 611
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1 555 633
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                42 624
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6 707
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                27 666
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6 356
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1 000 000
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                86 502
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                34 894
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                269 726
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                373 783
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Liabilities [abstract] | ||||||||||||||||||||||||||||||
| Provisions [abstract] | ||||||||||||||||||||||||||||||
| Provisions | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                2 919
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                2 050
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Current tax liabilities | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                0
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Deferred tax liabilities | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                10,000
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                21,000
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Liabilities | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                2 000 168
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                12 105 942
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Equity and liabilities | — | — | — | — | — | — | — | — | 
                                        
                                             
                                                3 892 431
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                14 979 603
                                                
                                                    
                                                        CZK
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |