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 | 
                                                4,407,533,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,917,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,301,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                384,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,465,196,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,044,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                310,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                731,815,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,577,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,267,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,654,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,881,026,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                26,240,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,583,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -56,279,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,695,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,901,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -51,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,726,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,685,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,139,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                136,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                298,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                331,194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,402,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                322,682,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,567,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                302,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                133,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                179,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                348,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,923,072,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,574,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                124,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,969,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                493,894,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                318,065,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,213,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,265,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |