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 | 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 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                3,878,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                208,680,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                211,734,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,053,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,552,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                211,734,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                190,249,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                182,029,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,631,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,895,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,918,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                184,661,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                184,661,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                166,215,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                96,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,043,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,347,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                162,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -23,391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,945,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                80,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,053,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                162,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,053,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,865,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,138,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,299,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,249,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,825,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,210,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                623,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,312,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,220,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,573,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |