Notes - Segment Information, Etc.
| Concept | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||||
| Segment information | ||||||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||||||
| Sales | ||||||||||||||||
| Revenues from external customers | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                363,258,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                447,177,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                997,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,827,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,006,115,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,006,115,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                504,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,490,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                334,851,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                956,010,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                116,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                964,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                964,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |