Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                79,972,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,668,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,817,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                93,123,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,482,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                96,574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                96,941,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -366,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,517,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,793,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,714,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -78,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                78,833,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,491,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                349,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                185,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,457,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,457,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                190,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,517,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                196,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                415,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                3,384,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,483,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,555,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,569,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,532,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,331,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,447,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                1,470,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,625,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,617,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,994,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,082,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,786,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,911,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |