Notes - Goodwill And Intangible Assets
| Concept | As at 2024-12-31 | As at 2023-12-31 | 
|---|---|---|
| Notes - Goodwill and intangible assets | ||
| Components of goodwill and intangible assets | ||
| Acquisition cost | ||
| Goodwill | 
                                                9,874,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,327,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Customer relationships | 
                                                3,856,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,495,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                1,450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,351,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                752,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Goodwill and intangible assets | 
                                                23,388,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,937,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated amortization and impairment | ||
| Goodwill | 
                                                -4,143,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Customer relationships | 
                                                -1,493,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                -1,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                -364,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -319,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Goodwill and intangible assets | 
                                                -9,935,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,196,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Carrying amount | ||
| Goodwill | 
                                                5,730,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,335,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Customer relationships | 
                                                2,363,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,347,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                387,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                371,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Goodwill and intangible assets | 
                                                13,453,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,740,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |