Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||
| Segment information | ||||||||
| Disclosure of sales, profit (loss), asset, liability, and other items for each reportable segment | ||||||||
| Sales | ||||||||
| Revenues from external customers | 
                                                42,985,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,150,999,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,136,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,136,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,180,636,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,117,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,297,952,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,297,952,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                31,721,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,721,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,721,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,362,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,362,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,362,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||
| Depreciation | 
                                                123,864,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                245,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                245,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                93,028,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,101,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                200,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                200,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                61,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                151,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                151,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                176,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,934,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                210,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                210,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |