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 | 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, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                25,070,067,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,196,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,144,302,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,070,067,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,728,865,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,779,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,770,440,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,627,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,077,568,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,627,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                988,375,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                986,044,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -988,375,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,331,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                959,945,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                959,945,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -959,945,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||
| Depreciation | 
                                                244,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                113,289,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                78,371,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                244,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,443,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,709,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                222,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,412,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                222,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |