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 | 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 | 
                                                751,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                751,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                313,826,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                437,950,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                288,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                401,962,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                690,462,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                690,462,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -53,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,463,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,559,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,571,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -49,571,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                15,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,355,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,657,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,852,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,008,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,008,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                36,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,819,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,351,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,290,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |