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 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 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 | 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 | — | — | — | — | — | — | — | — | — | — | — | 
                                                426,173,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                513,341,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                471,634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
| Inventories | — | — | — | — | — | — | — | — | — | — | — | 
                                                298,292,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                249,581,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other financial assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                31,905,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                16,062,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other current assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                91,780,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                54,113,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Current assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,366,972,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,326,797,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current assets | ||||||||||||||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — | — | — | — | — | — | 
                                                628,544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                553,358,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Goodwill | — | — | — | — | — | — | — | — | — | — | — | 
                                                449,464,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                379,048,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Intangible assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                544,247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                490,971,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Investments accounted for using equity method | — | — | — | — | — | — | — | — | — | — | — | 
                                                314,780,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                278,562,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other financial assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                206,272,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                197,887,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Deferred tax assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                205,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                118,825,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other non-current assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                23,267,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                15,792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                2,372,278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,034,446,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                3,739,251,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,361,244,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Liabilities and equity | ||||||||||||||||||||||||||||||||||||
| Liabilities | ||||||||||||||||||||||||||||||||||||
| Current liabilities | ||||||||||||||||||||||||||||||||||||
| Bonds and borrowings | — | — | — | — | — | — | — | — | — | — | — | 
                                                7,350,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                69,425,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other financial liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                4,387,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Income taxes payable | — | — | — | — | — | — | — | — | — | — | — | 
                                                29,250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                54,939,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Provisions | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,242,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                919,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other current liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                335,338,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                302,410,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Current liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                632,664,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                667,233,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current liabilities | ||||||||||||||||||||||||||||||||||||
| Bonds and borrowings | — | — | — | — | — | — | — | — | — | — | — | 
                                                87,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                69,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other financial liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                53,127,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                16,774,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Retirement benefit liability | — | — | — | — | — | — | — | — | — | — | — | 
                                                12,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                16,557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Provisions | — | — | — | — | — | — | — | — | — | — | — | 
                                                3,766,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,252,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Deferred tax liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                28,801,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                27,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other non-current liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                32,327,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                24,152,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                328,421,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                257,692,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                961,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                924,926,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Equity | ||||||||||||||||||||||||||||||||||||
| Equity attributable to owners of parent | ||||||||||||||||||||||||||||||||||||
| Share capital | — | — | — | — | — | — | — | — | — | — | — | 
                                                81,690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                81,690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Capital surplus | — | — | — | — | — | — | — | — | — | — | — | 
                                                478,486,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                506,230,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Retained earnings | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,904,404,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,621,218,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Treasury shares | — | — | — | — | — | — | — | — | — | — | — | 
                                                -67,398,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -44,669,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other components of equity | — | — | — | — | — | — | — | — | — | — | — | 
                                                336,397,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                229,214,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Equity attributable to owners of parent | — | — | — | — | — | — | — | — | — | — | — | 
                                                2,733,580,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,393,683,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-controlling interests | — | — | — | — | — | — | — | — | — | — | — | 
                                                44,584,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                42,634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Equity | 
                                                81,690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,904,404,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                297,086,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                336,397,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,733,580,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,584,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                478,486,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -67,398,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,323,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,778,165,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                229,214,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,436,317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,621,218,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                181,815,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,393,683,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                81,690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                506,230,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,355,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -44,669,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,262,369,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -44,858,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                81,690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,225,255,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,114,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                506,579,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,773,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,553,069,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,249,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and equity | — | — | — | — | — | — | — | — | — | — | — | 
                                                3,739,251,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,361,244,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |