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 | 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 | 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 | 
                                                24,206,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,753,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                129,577,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,616,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                132,281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,704,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                132,281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                122,241,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,149,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,843,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                125,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                125,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,822,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,910,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,052,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,052,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,915,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                470,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,948,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,948,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,402,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                255,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,694,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,218,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,635,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                417,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,834,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                264,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                335,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,244,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,908,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,580,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,988,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                133,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,326,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,843,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,383,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,894,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,779,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,297,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                678,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,647,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,976,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,329,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,508,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |