Notes - Segment Information, Etc.
| Concept | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||||||
| Segment information | ||||||||||||||||||
| Disclosure of sales, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||||||||
| Sales | ||||||||||||||||||
| Revenues from external customers | 
                                                5,901,003,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,748,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                165,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,015,861,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,989,987,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,788,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,901,003,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,616,656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,605,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                108,206,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                156,734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,713,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,058,727,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,544,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,844,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,713,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,183,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -35,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -13,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,526,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||||
| Depreciation | 
                                                78,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,352,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,917,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,198,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,691,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,007,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,371,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,252,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,751,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,363,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,007,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                46,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,323,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,501,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                549,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                549,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,079,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                90,097,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                549,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |