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 | 
                                                30,260,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,260,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,170,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                502,782,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,260,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,587,976,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,359,360,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                410,251,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,797,278,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,566,891,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,566,891,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,566,891,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                714,574,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                766,444,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                360,894,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                714,574,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                323,821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                361,079,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,206,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                334,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                724,041,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                724,041,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                766,416,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                1,105,723,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,117,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,377,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                465,419,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,105,723,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                578,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                279,992,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                71,188,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                467,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                818,214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                818,214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,133,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                821,348,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |