Notes - Property, Plant And Equipment
| Concept | As at 2024-12-31 | As at 2023-12-31 | 
|---|---|---|
| Notes - Property, plant and equipment | ||
| Components of property, plant and equipment | ||
| Acquisition cost | ||
| Land | 
                                                24,864,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures | 
                                                175,539,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                155,364,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                18,631,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,693,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                467,016,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                423,634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation and impairment | ||
| Land | 
                                                -1,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures | 
                                                -97,642,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -90,415,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                -106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                -286,565,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -268,568,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Carrying amount | ||
| Land | 
                                                23,589,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,310,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures | 
                                                77,896,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,948,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                18,525,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                201,991,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,882,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |