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 | 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 | 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 | 
                                                3,243,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,461,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,573,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,943,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,764,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,764,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,312,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,980,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,431,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,075,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,618,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,618,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                384,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                807,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,205,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,773,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,773,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                108,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,791,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                390,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |