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 | 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 | 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 | 
                                                13,501,591,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,650,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,393,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,676,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,676,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,935,684,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,955,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,041,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,313,799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,921,353,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                272,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,313,799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,669,468,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,450,481,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                2,906,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,973,626,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,012,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,012,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,183,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,503,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,526,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,508,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,526,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,898,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,453,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                64,641,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,914,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,538,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,538,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,806,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,779,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,224,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,716,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                101,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                133,508,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                134,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                134,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,886,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,234,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,786,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,551,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,786,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |