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 | 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 | 
                                                33,263,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,329,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,008,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,338,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                71,514,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,929,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,444,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,904,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                3,651,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                362,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                324,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,899,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -18,368,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,364,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                468,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,368,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                292,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,242,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |