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 | 
                                                4,435,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,107,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,527,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,693,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,635,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,911,783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,066,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,021,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                977,137,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,009,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,994,065,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,807,706,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                813,641,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,986,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                10,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                680,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                407,078,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                697,140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                259,290,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                293,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,412,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,675,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                506,253,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                528,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,034,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                198,851,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,738,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,162,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,434,115,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,740,512,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                301,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,377,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                340,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                611,283,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                612,766,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                270,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |