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 | 
                                                2,376,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,775,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,587,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,006,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,348,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,273,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,355,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,845,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,476,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,096,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,441,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                506,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,213,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                108,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,872,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,913,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                316,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,513,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |