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 | 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 | 2022-04-01 to 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||
| Segment information | ||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||
| Sales | ||||||||||
| Revenues from external customers | 
                                                15,760,672,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,760,672,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,825,430,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,935,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,986,576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,278,649,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,707,927,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,986,576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                366,237,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                307,906,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -366,237,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,330,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                313,354,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -313,354,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                240,110,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,244,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |