Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||
| Segment information | ||||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||||
| Sales | ||||||||||||||
| Revenues from external customers | 
                                                63,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                143,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,462,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,068,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,265,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,496,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,686,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,010,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,496,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,797,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,032,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,425,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,599,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,032,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,864,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,471,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,864,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |