Notes - Segment Information, Etc.
| Concept | 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 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 2021-10-01 to 2022-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                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
                                                    
                                                
                                             | 
                                                3,484,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,220,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,530,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,887,540,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                872,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                333,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                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
                                                    
                                                
                                             | 
                                                28,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,581,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,218,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -81,012,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,888,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                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
                                                    
                                                
                                             | 
                                                181,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                369,029,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,722,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                329,526,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                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
                                                    
                                                
                                             | 
                                                140,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                519,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                312,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                470,577,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,409,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |