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, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||
| Sales | ||||||||||
| Revenues from external customers | 
                                                23,286,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,217,919,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,068,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,286,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,268,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,748,907,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,017,167,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,017,167,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -153,450,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                153,450,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                153,450,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |