Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||
| Segment information | ||||||||||||||
| Disclosure of sales, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||||
| Sales | ||||||||||||||
| Revenues from external customers | 
                                                39,324,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                66,535,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                229,207,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,794,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                229,207,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,552,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,263,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,338,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,329,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,008,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                3,798,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                439,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,333,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -27,147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,651,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,899,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                362,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                324,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                1,770,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,023,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,114,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,633,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,114,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,687,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,605,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,039,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                774,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,860,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,860,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,441,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                2,478,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                896,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,799,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,799,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,295,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,790,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,080,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,478,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,459,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,459,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |