Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 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 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                5,061,478,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,724,387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,140,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,401,653,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,126,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,481,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,040,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,435,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,911,783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,107,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,527,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,693,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,635,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,066,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                24,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                939,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,931,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                962,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                319,725,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                592,864,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                259,290,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                680,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                407,078,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                697,140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,506,308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,431,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,208,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,508,516,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                395,144,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,108,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                301,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,738,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,162,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,434,115,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,740,512,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,377,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |