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 | 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 | 
                                                11,163,116,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,997,515,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,643,875,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,519,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                834,398,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                476,770,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,647,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,811,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,359,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,170,887,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |