Notes - Segment Information, Etc.
| Concept | 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 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||
| Segment information | ||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||
| Sales | ||||||||||
| Revenues from external customers | 
                                                2,516,609,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,005,901,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,312,445,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,633,021,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                798,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                819,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,309,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,619,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,435,952,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,185,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                437,447,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                189,108,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                666,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                492,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                201,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,671,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                780,341,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |