Notes And Other Explanatory Information [Abstract]
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                                        2024-01-01 to 2024-12-31  | 
                            
                        
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| Notes and other explanatory information [abstract] | |
| Disclosure of accounting judgements and estimates [text block] | 
                                        
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| Disclosure of allowance for credit losses [text block] | 
                                        
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| Disclosure of associates [text block] | 
                                        
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| Disclosure of auditors' remuneration [text block] | 
                                        
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| Disclosure of authorisation of financial statements [text block] | 
                                        
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| Disclosure of basis of consolidation [text block] | 
                                        
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| Disclosure of business combinations [text block] | 
                                        
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| Disclosure of cash flow statement [text block] | 
                                        
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| Disclosure of changes in accounting policies [text block] | 
                                        
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| Disclosure of commitments [text block] | 
                                        
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| Disclosure of contingent liabilities [text block] | 
                                        
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| Disclosure of deferred taxes [text block] | 
                                        
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| Disclosure of depreciation and amortisation expense [text block] | 
                                        
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| Disclosure of derivative financial instruments [text block] | 
                                        
                                             
                                                These types of issued debt securities contain significant
                                                
                                             
                                        
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| Disclosure of dividends [text block] | 
                                        
                                             
                                                Proposed appropriation of the result
                                                
                                             
                                        
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| Disclosure of employee benefits [text block] | 
                                        
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| Disclosure of entity's operating segments [text block] | 
                                        
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| Disclosure of events after reporting period [text block] | 
                                        
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| Disclosure of fair value measurement [text block] | 
                                        
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| Disclosure of fee and commission income (expense) [text block] | 
                                        
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| Disclosure of financial instruments at fair value through profit or loss [text block] | 
                                        
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| Disclosure of financial risk management [text block] | 
                                        
                                             
                                                RISK MANAGEMENT AND
                                                
                                             
                                        
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| Disclosure of general and administrative expense [text block] | 
                                        
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| Disclosure of general information about financial statements [text block] | 
                                        
                                             
                                                All amounts in the tables of the consolidated
                                                
                                             
                                        
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| Disclosure of goodwill [text block] | 
                                        
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| Disclosure of information about hyperinflationary reporting [text block] | 
                                        
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| Disclosure of interest income (expense) [text block] | 
                                        
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| Disclosure of investment property [text block] | 
                                        
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| Disclosure of investments accounted for using equity method [text block] | 
                                        
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| Disclosure of leases [text block] | 
                                        
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| Disclosure of liquidity risk [text block] | 
                                        
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| Disclosure of loans and advances to banks [text block] | 
                                        
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| Disclosure of market risk [text block] | 
                                        
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| Disclosure of material accounting policy information [text block] | 
                                        
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| Disclosure of non-current assets held for sale and discontinued operations [text block] | 
                                        
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| Disclosure of objectives, policies and processes for managing capital [text block] | 
                                        
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| Disclosure of other assets [text block] | 
                                        
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| Disclosure of other operating income (expense) [text block] | 
                                        
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| Disclosure of related party [text block] | 
                                        
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| Disclosure of repurchase and reverse repurchase agreements [text block] | 
                                        
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| Disclosure of subordinated liabilities [text block] | 
                                        
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| Disclosure of subsidiaries [text block] | 
                                        
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