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 | 
                                                921,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,390,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,390,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,212,131,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,183,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,283,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,994,854,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,369,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,681,354,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,136,529,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,024,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,293,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                81,501,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,293,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                421,564,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -421,564,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                397,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                388,796,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -413,978,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                240,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                413,978,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |