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 | 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
                                                    
                                                
                                             | 
                                                4,781,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,781,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                77,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                402,977,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,301,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,833,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,833,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                423,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,318,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                -1,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                567,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                463,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                567,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |