Notes - Segment Information, Etc.
| Concept | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||
| Segment information | ||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                632,676,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,036,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,022,531,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                386,818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,022,531,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                375,995,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                951,247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                572,049,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,202,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                951,247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                440,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                633,498,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -633,966,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                633,966,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                563,139,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -563,139,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                485,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                562,597,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |