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 | 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 | 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 | 
                                                25,235,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                159,510,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                159,510,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,030,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,870,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,895,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,973,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,163,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,284,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,973,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,068,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,279,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                2,385,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,686,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,686,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                741,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,157,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,791,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,083,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                619,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,083,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,858,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,597,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                2,391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,649,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,434,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,649,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                629,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,737,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,456,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,033,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,059,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                903,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,033,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,373,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,919,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |