Notes - Segment Information, Etc.
| Concept | 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 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||||
| Segment information | ||||||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||||||
| Sales | ||||||||||||||||
| Revenues from external customers | 
                                                106,310,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                170,870,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,386,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,174,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,803,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,756,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                155,678,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                176,922,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,243,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,119,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                176,922,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                1,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,513,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,320,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,352,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,352,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |