Notes - Segment Information, Etc.
| Concept | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                4,236,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,676,763,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                364,782,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,073,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                162,572,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,032,409,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,770,884,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,365,881,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                408,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,545,111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,655,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,168,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,245,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -31,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -30,348,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,807,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,901,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,085,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,262,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |