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 and profit (loss) for each reportable segment | ||||||||||||||
| Sales | ||||||||||||||
| Revenues from external customers | 
                                                37,463,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,650,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,209,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,672,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                101,787,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,577,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,307,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                96,151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,704,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,026,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                858,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,430,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                571,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,430,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,430,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                892,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,265,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,265,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                520,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,853,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |