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 and profit (loss) for each reportable segment | ||||||||||||||||
| Sales | ||||||||||||||||
| Revenues from external customers | 
                                                27,841,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,215,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                169,668,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                169,689,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                169,689,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                108,612,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                100,671,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,663,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                155,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                155,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                155,532,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                775,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                434,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,356,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,790,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,790,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                501,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                472,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                306,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,833,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,526,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,833,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |