Consolidated Statement Of Financial Position
| Concept | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated statement of financial position | |||||||||||||||||||||
| Statement of financial position | |||||||||||||||||||||
| Assets | |||||||||||||||||||||
| Current assets | |||||||||||||||||||||
| Cash and cash equivalents | — | — | — | — | — | — | 
                                                32,268,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                49,065,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                66,557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
| Trade and other receivables | — | — | — | — | — | — | 
                                                6,695,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,064,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Inventories | — | — | — | — | — | — | 
                                                8,838,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,903,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other financial assets | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                316,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other current assets | — | — | — | — | — | — | 
                                                3,725,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Current assets | — | — | — | — | — | — | 
                                                57,855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                65,112,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current assets | |||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — | 
                                                7,468,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                7,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Goodwill | — | — | — | — | — | — | 
                                                25,693,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                24,623,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Intangible assets | — | — | — | — | — | — | 
                                                51,911,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                52,291,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other financial assets | — | — | — | — | — | — | 
                                                4,518,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,266,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Deferred tax assets | — | — | — | — | — | — | 
                                                4,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,964,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other non-current assets | — | — | — | — | — | — | 
                                                32,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                42,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current assets | — | — | — | — | — | — | 
                                                93,643,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                92,086,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Assets | — | — | — | — | — | — | 
                                                151,498,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                157,198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Liabilities and equity | |||||||||||||||||||||
| Liabilities | |||||||||||||||||||||
| Current liabilities | |||||||||||||||||||||
| Trade and other payables | — | — | — | — | — | — | 
                                                4,052,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,244,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Income taxes payable | — | — | — | — | — | — | 
                                                255,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other current liabilities | — | — | — | — | — | — | 
                                                4,635,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,790,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Current liabilities | — | — | — | — | — | — | 
                                                15,632,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                17,185,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current liabilities | |||||||||||||||||||||
| Provisions | — | — | — | — | — | — | 
                                                493,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                484,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Deferred tax liabilities | — | — | — | — | — | — | 
                                                1,857,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,490,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other non-current liabilities | — | — | — | — | — | — | 
                                                3,788,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,029,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current liabilities | — | — | — | — | — | — | 
                                                67,348,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                73,203,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Liabilities | — | — | — | — | — | — | 
                                                82,980,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                90,388,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Equity | |||||||||||||||||||||
| Equity attributable to owners of parent | |||||||||||||||||||||
| Share capital | — | — | — | — | — | — | 
                                                47,172,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                46,807,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Capital surplus | — | — | — | — | — | — | 
                                                35,074,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                34,048,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Retained earnings | — | — | — | — | — | — | 
                                                -20,942,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -16,104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Treasury shares | — | — | — | — | — | — | 
                                                -3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other components of equity | — | — | — | — | — | — | 
                                                7,217,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,060,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Equity attributable to owners of parent | — | — | — | — | — | — | 
                                                68,518,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                66,810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Equity | 
                                                47,172,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,942,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,217,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,518,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,074,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,518,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,060,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                66,810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -16,104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                66,810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,807,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,048,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,936,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,335,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,936,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,525,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,911,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and equity | — | — | — | — | — | — | 
                                                151,498,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                157,198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — |