Notes - Segment Information, Etc.
| Concept | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 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 | 
                                                3,492,765,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,492,765,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,437,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                212,458,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,224,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,850,757,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,850,757,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,804,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,051,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,629,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                1,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,547,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,547,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |