Notes - Segment Information, Etc.
| Concept | 2024-01-01 to 2024-03-31 | 2024-01-01 to 2024-03-31 | 2024-01-01 to 2024-03-31 | 2024-01-01 to 2024-03-31 | 2024-01-01 to 2024-03-31 | 2024-01-01 to 2024-03-31 | 2024-01-01 to 2024-03-31 | 2024-01-01 to 2024-03-31 | 2023-01-01 to 2023-03-31 | 2023-01-01 to 2023-03-31 | 2023-01-01 to 2023-03-31 | 2023-01-01 to 2023-03-31 | 2023-01-01 to 2023-03-31 | 2023-01-01 to 2023-03-31 | 2023-01-01 to 2023-03-31 | 2023-01-01 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 | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,011,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                168,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,939,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,583,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,222,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,583,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                135,439,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                169,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,695,448,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,072,309,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,072,309,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,063,630,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,292,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                -31,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,361,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,902,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -25,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,537,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |