Notes - Segment Information, Etc.
| Concept | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2022-03-01 to 2023-02-28 | 2022-03-01 to 2023-02-28 | 2022-03-01 to 2023-02-28 | 2022-03-01 to 2023-02-28 | 2022-03-01 to 2023-02-28 | 2022-03-01 to 2023-02-28 | 2022-03-01 to 2023-02-28 | 2022-03-01 to 2023-02-28 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                3,938,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,900,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,915,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,938,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,005,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,301,921,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,118,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,103,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,760,911,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,337,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,118,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                6,977,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,612,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,057,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                146,567,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,813,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                119,574,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                137,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,144,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                106,761,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |