Notes - Segment Information, Etc.
| Concept | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||||
| Segment information | ||||||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||||||
| Sales | ||||||||||||||||
| Revenues from external customers | 
                                                1,372,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                209,253,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                313,171,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                313,171,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,890,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,653,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                311,798,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                69,142,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,347,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                282,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,347,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,794,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,153,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                337,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,814,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,451,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,549,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,558,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,333,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |