Notes - Segment Information, Etc.
| Concept | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                7,372,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,462,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,462,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                350,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,022,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,757,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                299,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,757,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,695,588,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,396,529,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                2,183,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,403,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,403,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,220,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,520,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                220,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                54,131,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                101,672,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,598,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,643,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,487,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,524,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,844,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                14,494,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                190,055,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                159,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,991,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,494,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                545,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                516,101,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                575,478,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,396,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                545,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,980,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |