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, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||||||
| Sales | ||||||||||||||||
| Revenues from external customers | 
                                                26,683,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,784,257,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,683,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,414,909,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,683,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,060,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,400,969,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,496,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                566,352,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,463,844,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,463,844,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,463,844,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                209,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                209,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -209,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                209,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                225,873,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,616,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                262,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                262,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -262,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                932,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                275,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                932,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                577,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                932,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                80,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                308,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                781,028,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,154,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,154,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,151,720,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                834,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                118,433,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                834,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                710,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                834,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,919,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,825,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                453,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                143,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                917,417,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                917,417,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                917,417,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |