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 | 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 | 
                                                39,452,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,998,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,450,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,450,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,865,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,295,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,160,559,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,160,559,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                1,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,258,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,597,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,856,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,856,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |