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 | 
                                                858,082,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                794,977,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                849,620,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,462,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,643,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                858,082,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                773,106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                825,119,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                832,595,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                832,595,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,629,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                374,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,008,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,008,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,937,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,955,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,955,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |