Consolidated Statement Of Changes In Equity
| Concept | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated statement of changes in equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                122,784,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -89,970,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -89,970,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,390,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                1,390,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                49,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,390,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,517,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,140,588,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                209,510,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,140,588,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                28,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                238,343,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                49,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,365,703,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                98,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                49,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -222,804,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,191,775,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                147,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,390,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,390,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -100,328,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,191,775,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -100,328,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,254,089,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                49,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,116,936,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,390,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                186,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,875,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -100,328,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                995,857,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -768,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -100,328,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -768,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                974,907,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                591,904,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,391,688,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,390,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,390,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                570,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -366,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,875,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) attributable to owners of parent | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                245,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                245,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                245,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                143,278,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                143,278,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                143,278,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disposal of treasury shares | — | — | — | — | — | — | — | — | — | — | 
                                                3,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                10,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                10,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                -7,225,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,225,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -7,225,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | 
                                                -4,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -4,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                23,823,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -4,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -4,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -9,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,464,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                -4,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                -4,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,375,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,375,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                116,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                18,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                18,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                18,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                18,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                17,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                -4,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -4,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                23,823,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -4,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                10,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                52,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                263,231,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                248,767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -4,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                238,408,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,187,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                51,187,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -4,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,375,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,375,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                258,232,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -422,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                18,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                142,028,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                18,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -422,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                143,278,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -422,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -405,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |