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, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||||
| Sales | ||||||||||||||
| Revenues from external customers | 
                                                10,205,599,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,434,769,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                229,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,120,386,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,085,213,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,434,769,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,520,264,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,794,392,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,314,656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,712,917,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                398,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,712,917,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                450,089,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                512,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,864,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                315,780,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                134,309,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                60,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                451,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                425,803,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,697,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                618,501,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                625,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                625,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                136,945,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                92,220,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,908,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,108,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                227,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                241,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                241,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |