Year To Quarter End 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 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Year to quarter end consolidated statement of comprehensive income | ||||||||||
| Statement of comprehensive income | ||||||||||
| Profit (loss) | 
                                                900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,034,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                906,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | — | — | — | 
                                                -24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                206,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Foreign currency translation adjustment | — | — | — | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Remeasurements of defined benefit plans, net of tax | — | — | — | 
                                                487,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                330,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Share of other comprehensive income of entities accounted for using equity method | — | — | — | 
                                                16,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -41,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other comprehensive income | — | — | — | 
                                                481,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Comprehensive income | — | — | — | 
                                                1,516,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,414,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | — | — | — | 
                                                1,516,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,414,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — |