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 | 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 | 2023-01-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||||||
| Segment information | ||||||||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||||||||
| Sales | ||||||||||||||||||
| Revenues from external customers | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,211,630,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                427,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                460,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,856,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,980,998,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,955,675,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,980,998,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,323,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                631,995,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,194,984,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,867,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                422,475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,116,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,142,102,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,142,102,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                -59,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,931,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,723,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,048,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,748,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,363,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,919,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -35,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |