Quarter Period Consolidated Statement Of Comprehensive Income
| 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 | 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 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Quarter period consolidated statement of comprehensive income | ||||||||||
| Statement of comprehensive income | ||||||||||
| Profit (loss) | 
                                                5,751,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,975,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,975,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,975,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,975,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,651,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | 
                                                -6,381,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -75,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Remeasurements of defined benefit plans, net of tax | 
                                                -53,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                284,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other comprehensive income | 
                                                -6,493,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                209,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Comprehensive income | 
                                                -742,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                5,861,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | 
                                                -742,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                5,861,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — |