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 | 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 | 
                                                10,433,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,759,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,149,577,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                390,001,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,433,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,013,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,268,149,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,570,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                443,353,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                301,975,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,013,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,636,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                333,354,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -434,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                331,717,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                434,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                100,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,302,037,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,246,421,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,616,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,302,037,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,194,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                284,962,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                162,701,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                256,745,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,044,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                266,343,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,597,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                217,338,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                305,889,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,949,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                339,099,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                298,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                215,298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                260,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,338,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                270,342,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                296,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                235,165,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                295,126,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,253,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                306,218,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |