Notes - Segment Information, Etc.
| Concept | 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 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                33,263,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,329,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,008,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,338,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                71,514,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,929,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,444,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,904,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                3,651,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                362,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                324,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,899,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -18,368,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,364,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                468,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,368,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                292,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,242,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                1,605,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                774,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,860,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,860,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,441,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,039,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,991,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                732,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,223,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,430,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                2,790,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,478,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,459,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,459,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,080,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,222,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,524,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                525,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,222,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,593,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |