Notes - Segment Information, Etc.
| Concept | 2023-04-01 to 2023-12-31 | 2023-04-01 to 2023-12-31 | 2023-04-01 to 2023-12-31 | 2023-04-01 to 2023-12-31 | 2022-04-01 to 2022-12-31 | 2022-04-01 to 2022-12-31 | 2022-04-01 to 2022-12-31 | 2022-04-01 to 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                17,188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,227,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,094,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,511,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,381,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,274,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,026,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,866,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                319,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                359,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                469,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                606,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |