Notes - Segment Information
| Concept | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 
|---|---|---|---|---|
| Notes - Segment information | ||||
| Segment information | ||||
| Revenue | ||||
| Revenue | — | 
                                                401,130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                354,831,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit (loss) before tax | — | 
                                                21,470,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,691,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                470,866,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                426,093,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |