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 | 
                                                6,625,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,054,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,231,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,987,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,231,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,083,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,135,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,173,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,408,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,341,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,055,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,135,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                643,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                178,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,420,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,420,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                93,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                859,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                347,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |