Statement Of Changes In Equity
| Concept | As at 2022-12-31 | As at 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2022-12-31 | 2022-01-01 to 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 | 2022-01-01 to 2022-12-31 | As at 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2022-12-31 | 2022-01-01 to 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 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2022-12-31 | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                12,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,491,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,714,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,381,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,691,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,821,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,821,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,691,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,293,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,309,754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,074,214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,060,164,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,933,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,933,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,062,931,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,571,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                12,060,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                15,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,844,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                956,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,336,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,336,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,844,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,143,408,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,585,238,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,448,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,448,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                940,659,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,778,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,175,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -16,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                649,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                537,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                648,173,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                488,428,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -620,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -698,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                649,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                537,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -16,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                564,943,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -698,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                492,825,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                552,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cumulative effects of changes in accounting policies | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
| Restated balance | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                15,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                15,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,843,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                957,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,336,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,336,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,843,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,144,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,585,238,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,448,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,448,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                941,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,777,168,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,176,642,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -16,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                649,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                537,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                648,173,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                488,428,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -620,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -698,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                649,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                537,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -16,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                564,943,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -698,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                492,825,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                552,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -70,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Issuance of new shares | — | — | — | — | — | — | — | — | — | — | — | 
                                                969,806,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                969,806,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                969,806,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                484,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                969,806,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                798,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,597,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                798,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                798,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                798,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,597,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,597,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                798,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,597,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | 
                                                -801,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -848,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -848,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -848,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -848,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -1,145,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,145,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,145,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,157,363,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -1,145,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | 
                                                -3,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                39,107,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                40,743,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,590,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                39,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                -4,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                -776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                11,112,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,423,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                11,112,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | — | 
                                                -3,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                204,490,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                40,743,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,590,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -848,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                165,382,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -848,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -794,447,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,326,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                474,926,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                117,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                -776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                798,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                11,112,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,423,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,145,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                578,464,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                798,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                798,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,145,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                798,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,157,363,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                452,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                623,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                937,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                463,343,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |