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 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated statement of comprehensive income | ||||||||||
| Statement of comprehensive income | ||||||||||
| Profit (loss) | 
                                                538,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,355,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                538,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                538,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                538,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                444,086,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                444,086,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                444,086,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                444,086,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,011,044,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | — | 
                                                7,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                4,520,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | — | 
                                                10,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                7,646,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans, before tax | — | 
                                                3,125,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                3,125,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income | — | 
                                                1,365,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                1,018,691,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | — | 
                                                1,352,543,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                993,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income attributable to non-controlling interests | — | 
                                                13,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                25,316,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |