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 and profit (loss) for each reportable segment | ||||||||||||||||
| Sales | ||||||||||||||||
| Revenues from external customers | 
                                                24,206,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                132,281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,753,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                129,577,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,616,000,000
                                                
                                                    
                                                        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
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,910,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,052,000,000
                                                
                                                    
                                                        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
                                                    
                                                
                                             |