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 | 
                                                27,073,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,835,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,423,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,835,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,685,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,985,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,664,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,320,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,685,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,210,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                934,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,882,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,092,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,092,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,672,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                284,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |