v3.26.1
RISK MANAGEMENT - Structural foreign exchange risk - Financial assets (Details)
$ in Millions, $ in Millions
Dec. 31, 2025
COP ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
COP ($)
Dec. 31, 2024
USD ($)
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets $ 305,457,293   $ 304,853,883  
Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 35,624,391 $ 9,403 59,750,750 $ 13,661
Other Currency [Member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets   118   74
Financial assets at fair value through profit or loss, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 31,969,586   24,400,493  
Financial assets at amortised cost, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 243,432,271   251,981,889  
Financial assets measured at fair value through other comprehensive income, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 28,455,957   27,050,198  
Investment securities [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 39,252,615   39,162,618  
Loan portfolio [member] | Financial assets at amortised cost, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 184,225,973   190,129,486  
Loan portfolio [member] | Financial assets at amortised cost, category [member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 17,657,908 4,695 36,813,056 8,347
Loan portfolio [member] | Financial assets at amortised cost, category [member] | Other Currency [Member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets   5   2
Trading securities [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 29,097,591   20,163,214  
Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 29,097,591   20,163,214  
Investment securities at fair value [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 30,055,436   28,472,926  
Trade receivables [member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 2,585,220 688 3,164,035 714
IFRS Cash and Cash Equivalents [Member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 19,354,710   16,998,859  
IFRS Cash and Cash Equivalents [Member] | Financial assets at amortised cost, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 19,354,710   16,998,859  
IFRS Cash and Cash Equivalents [Member] | Financial assets at amortised cost, category [member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 8,054,803 2,075 5,913,128 1,338
IFRS Cash and Cash Equivalents [Member] | Financial assets at amortised cost, category [member] | Other Currency [Member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets   108   62
Debt securities [member] | Investment securities [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets     1,425  
Debt securities [member] | Investment securities [member] | Financial assets at amortised cost, category [member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 30,057 8 2,558,707 580
Debt securities [member] | Investment securities [member] | Financial assets measured at fair value through other comprehensive income, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 28,455,957   27,050,198  
Debt securities [member] | Trading securities [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 17,582,844   11,937,414  
Debt securities [member] | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 17,582,844   11,937,414  
Debt securities [member] | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 965,570 257 267,836 61
Debt securities [member] | Investment securities at fair value [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets     1,425  
Debt securities [member] | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 28,455,957   27,050,198  
Debt securities [member] | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 5,215,235 1,384 10,649,301 2,412
Debt securities [member] | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Other Currency [Member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets   4   4
Derivatives [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 2,453,579   1,023,313  
Derivatives [member] | Trading securities [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 2,217,021   969,294  
Derivatives [member] | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 2,217,021   969,294  
Derivatives [member] | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 1,114,961 296 341,310 207
Derivatives [member] | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Other Currency [Member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets   $ 1   6
Derivatives [member] | Hedging instruments [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 236,558   54,019  
Derivatives [member] | Hedging instruments [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets 236,558   54,019  
Derivatives [member] | Hedging instruments [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member] | Currency risk [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Financial assets $ 637   $ 43,377 $ 2