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 | 
                                                89,796,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,702,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                91,269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,857,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,699,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,753,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Goodwill and intangible assets | 
                                                314,317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                298,157,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated amortization and impairment | ||
| Goodwill | 
                                                -6,336,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,022,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                -71,240,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -68,304,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                -1,373,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,371,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Goodwill and intangible assets | 
                                                -148,854,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -139,583,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Carrying amount | ||
| Goodwill | 
                                                83,459,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,680,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                20,029,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,553,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                326,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                381,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Goodwill and intangible assets | 
                                                165,462,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                158,573,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |