Consolidated Statement Of Comprehensive Income
| Concept | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated statement of comprehensive income | ||||||||||
| Statement of comprehensive income | ||||||||||
| Profit (loss) | 
                                                697,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                697,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                697,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                872,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                697,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                996,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                996,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                996,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                996,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,353,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | — | — | — | 
                                                -10,517,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -8,487,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | — | — | — | 
                                                1,698,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -73,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans, net of tax | — | — | — | 
                                                -65,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -23,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | — | — | — | 
                                                -8,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -8,584,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income | — | — | — | 
                                                -8,011,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -6,230,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | — | — | — | 
                                                -8,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -6,225,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income attributable to non-controlling interests | — | — | — | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |