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 | 
                                                1,777,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,375,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,605,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,515,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,273,496,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,824,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,949,506,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,164,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,105,190,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,285,313,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                35,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                479,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,644,504,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,206,673,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,784,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                485,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,850,725,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,272,914,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                119,786,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,365,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,804,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                184,706,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,223,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                155,630,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,091,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                270,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                209,404,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                284,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,832,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |