Notes - Property, Plant And Equipment
| Concept | As at 2025-03-31 | As at 2024-03-31 | 
|---|---|---|
| Notes - Property, plant and equipment | ||
| Components of property, plant and equipment | ||
| Acquisition cost | ||
| Land | 
                                                15,245,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,251,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures | 
                                                190,337,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                154,873,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                11,848,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,658,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                534,976,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                510,597,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation and impairment | ||
| Land | 
                                                -172,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -172,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures | 
                                                -117,480,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -113,538,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                -2,533,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                -388,503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -377,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Carrying amount | ||
| Land | 
                                                15,073,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,079,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures | 
                                                72,857,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,335,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                9,315,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,288,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                146,473,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                133,428,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |