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 | 
                                                88,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,746,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,206,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,422,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,528,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,882,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,341,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,155,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,969,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,969,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                168,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -785,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                785,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                369,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -798,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                798,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                259,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                2,428,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                668,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                219,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,209,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                958,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                624,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                679,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                312,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,033,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,706,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                2,709,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                898,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                365,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,344,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,133,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                308,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                906,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,730,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,968,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |