Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                793,037,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,802,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,595,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                111,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,119,909,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,595,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,975,448,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,980,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                723,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,983,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                111,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,300,065,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,868,338,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,260,257,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |