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 | 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 | 
                                                18,339,004,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,911,084,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,769,416,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,646,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,627,174,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,375,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,777,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,605,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,515,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,273,496,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                13,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                497,796,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,998,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,293,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,780,689,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                479,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,644,504,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,206,673,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                55,123,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                116,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                191,667,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,409,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                119,786,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,365,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,804,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                346,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,762,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                467,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,091,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                155,630,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                270,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |