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 | 
                                                5,634,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                159,101,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,611,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                644,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,219,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,634,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,236,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,676,763,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                364,782,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,105,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,236,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,796,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,630,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -36,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,168,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,455,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -31,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,225,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |