Notes - Goodwill And Intangible Assets
| Concept | As at 2025-03-31 | As at 2024-03-31 | 
|---|---|---|
| Notes - Goodwill and intangible assets | ||
| Components of goodwill and intangible assets | ||
| Acquisition cost | ||
| Goodwill | 
                                                158,642,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                159,046,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                46,535,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated amortization and impairment | ||
| Goodwill | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                -22,834,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -19,076,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Carrying amount | ||
| Goodwill | 
                                                158,642,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                159,046,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                23,701,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,374,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |