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 | 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 | 
                                                102,953,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,080,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,628,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,024,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,848,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,582,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,293,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                104,379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,602,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,184,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,506,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||
| Depreciation | 
                                                5,701,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                612,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,922,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,166,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,714,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,580,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,593,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,844,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                710,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,024,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                9,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                767,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,794,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,949,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,438,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,481,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,767,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                709,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                961,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |