Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                47,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,280,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,993,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,327,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,230,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,843,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,672,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,419,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,633,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,937,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                14,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |