Quarter Period Consolidated Statement Of Comprehensive Income
| 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 | 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 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Quarter period consolidated statement of comprehensive income | ||||||||||
| Statement of comprehensive income | ||||||||||
| Profit (loss) | 
                                                428,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                423,262,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                428,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                428,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                428,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                459,280,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                459,280,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                459,280,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                459,280,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                460,265,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | — | 
                                                10,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                3,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | — | 
                                                10,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                3,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income | — | 
                                                433,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                463,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | — | 
                                                433,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                463,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |