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 | 
                                                348,013,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                537,202,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                969,415,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                990,407,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                990,407,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,086,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                943,757,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,332,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                305,281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                964,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                554,389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                964,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                353,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,843,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,843,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                319,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,286,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,605,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,605,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                17,115,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,534,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,235,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,180,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                945,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,143,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -36,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,202,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,679,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                793,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,935,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,464,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,541,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,472,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                17,293,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,456,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,519,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,981,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,711,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -95,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,291,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,484,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -111,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,448,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,776,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |