Consolidated Statement Of Comprehensive Income
| Concept | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated statement of comprehensive income | ||||||||||
| Statement of comprehensive income | ||||||||||
| Profit (loss) | 
                                                1,594,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,594,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,594,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,866,108,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,594,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,747,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,388,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,388,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,388,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,388,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | — | — | — | 
                                                370,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -67,937,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
| Foreign currency translation adjustment | — | — | — | 
                                                4,013,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                19,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
| Remeasurements of defined benefit plans, net of tax | — | — | — | 
                                                -102,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -131,461,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
| Share of other comprehensive income of entities accounted for using equity method | — | — | — | 
                                                -4,162,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,323,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
| Other comprehensive income | — | — | — | 
                                                267,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -183,251,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
| Comprehensive income | — | — | — | 
                                                2,133,767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,564,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | — | — | — | 
                                                2,104,233,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,542,298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
| Comprehensive income attributable to non-controlling interests | — | — | — | 
                                                29,533,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                22,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — |