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 | 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 | 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 | 
                                                174,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                601,322,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                531,867,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                179,225,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,588,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                114,650,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                808,997,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                178,225,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,588,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,387,240,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                699,296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                490,553,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                116,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,593,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,387,240,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                567,042,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                173,142,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                154,560,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                6,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,934,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                524,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,497,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,984,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,444,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -112,444,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,888,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,002,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                349,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -128,888,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                106,631,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,759,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                230,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,625,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||||||
| Depreciation | 
                                                9,018,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,630,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,672,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,727,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                154,632,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,590,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,440,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,543,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                154,624,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,648,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,402,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,054,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -43,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,383,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,468,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,605,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,308,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,097,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                3,422,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,522,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,417,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,747,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                207,803,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,819,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                217,002,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                334,973,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,009,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,096,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                842,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,434,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,857,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                335,816,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                177,877,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,510,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |