Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||
| Segment information | ||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                1,357,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,889,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,328,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,081,567,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,328,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,844,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,341,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,935,681,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,121,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,121,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |