Notes - Property, Plant And Equipment
| Concept | As at 2023-12-31 | As at 2022-12-31 | 
|---|---|---|
| Notes - Property, plant and equipment | ||
| Components of property, plant and equipment | ||
| Acquisition cost | ||
| Property, plant and equipment | 
                                                837,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                816,186,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation and impairment | ||
| Property, plant and equipment | 
                                                -406,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -315,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Carrying amount | ||
| Property, plant and equipment | 
                                                28,881,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,316,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |