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 | 
                                                25,064,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,555,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,116,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,606,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,616,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                879,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                488,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,774,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,863,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,285,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,954,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,166,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,302,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                713,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,842,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                260,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,345,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                529,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                249,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,989,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                804,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,739,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,432,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |