Consolidated Statement Of Changes In Equity
| Concept | 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 | 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 | As at 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 | As at 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 | 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 | 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 | 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 | 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 | 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 | As at 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 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated statement of changes in equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                18,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                18,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                787,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                787,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                807,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                787,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                31,596,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,070,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,303,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,898,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,425,744,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,297,167,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                3,916,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                807,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,020,543,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,596,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                18,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                807,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,839,896,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,724,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,325,239,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                787,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                787,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,730,519,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                22,948,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,475,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                807,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,434,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,948,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                787,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,343,279,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                14,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,994,722,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,298,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                807,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                807,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,292,673,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,967,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,908,001,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                787,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                787,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                787,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,893,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,373,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dividends of surplus | — | — | — | — | 
                                                -60,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -60,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -60,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -60,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                -60,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -60,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -60,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                -50,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -50,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -50,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                -50,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -50,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -50,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -50,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) attributable to owners of parent | — | — | — | — | — | — | — | — | — | — | — | 
                                                646,107,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                646,107,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                646,107,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                516,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                516,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                516,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                8,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                8,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,234,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                11,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                3,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                39,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                573,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                39,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                573,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                594,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                585,927,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                39,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                585,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                572,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                572,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                39,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                480,881,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                431,546,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                11,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                466,646,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                431,546,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                466,049,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                432,143,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                435,277,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |