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 and profit (loss) for each reportable segment | ||||||||||||||
| Sales | ||||||||||||||
| Revenues from external customers | 
                                                420,647,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                354,020,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,551,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                66,627,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                420,647,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                232,469,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,334,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                318,690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                211,356,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,589,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                382,279,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                382,279,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                66,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                988,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,145,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,145,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,970,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,930,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,720,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,720,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |