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 | 
                                                20,174,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                125,980,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,494,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                171,345,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                171,345,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,449,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,746,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,358,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                135,179,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,015,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,358,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                225,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                816,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                791,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                212,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                752,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,763,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                597,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |