v3.26.1
RISK MANAGEMENT - Investment debt securities - Concentration by sector (Details) - COP ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of financial assets [line items]    
Financial assets $ 305,457,293 $ 304,853,883
Financial assets at fair value through profit or loss, category [member]    
Disclosure of financial assets [line items]    
Financial assets 31,969,586 24,400,493
Financial assets at amortised cost, category [member]    
Disclosure of financial assets [line items]    
Financial assets 243,432,271 251,981,889
Financial assets measured at fair value through other comprehensive income, category [member]    
Disclosure of financial assets [line items]    
Financial assets 28,455,957 27,050,198
Investment securities [member]    
Disclosure of financial assets [line items]    
Financial assets 39,252,615 39,162,618
Investment securities [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 39,260,893 39,181,293
Investment securities [member] | Financial assets at amortised cost, category [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 9,205,457 10,708,367
Trading securities [member]    
Disclosure of financial assets [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 financial assets [line items]    
Financial assets 29,097,591 20,163,214
Investment securities at fair value [member]    
Disclosure of financial assets [line items]    
Financial assets 30,055,436 28,472,926
Debt securities [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 55,244,258 49,697,404
Debt securities [member] | Investment securities [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 39,260,893 39,181,293
Debt securities [member] | Investment securities [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]    
Disclosure of financial assets [line items]    
Financial assets   1,425
Debt securities [member] | Investment securities [member] | Financial assets at amortised cost, category [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 9,205,457 10,708,367
Debt securities [member] | Investment securities [member] | Financial assets at amortised cost, category [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 7,211,467 8,149,660
Debt securities [member] | Investment securities [member] | Financial assets at amortised cost, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 1,993,990 2,558,707
Debt securities [member] | Investment securities [member] | Financial assets measured at fair value through other comprehensive income, category [member]    
Disclosure of financial assets [line items]    
Financial assets 28,455,957 27,050,198
Debt securities [member] | Trading securities [member]    
Disclosure of financial assets [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 financial assets [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] | Gross carrying amount [member]    
Disclosure of financial assets [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] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 16,616,179 11,695,047
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] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 966,665 242,367
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 financial assets [line items]    
Financial assets   1,425
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] | Colombia, Pesos    
Disclosure of financial assets [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 financial assets [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] | Gross carrying amount [member]    
Disclosure of financial assets [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] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 23,240,010 16,400,896
Debt securities [member] | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 5,215,947 10,649,302
Securities issued or secured by Colombian Government | Investment securities [member] | Financial assets at amortised cost, category [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 1,860,258 2,553,693
Securities issued or secured by Colombian Government | Investment securities [member] | Financial assets at amortised cost, category [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 1,860,258 2,553,693
Securities issued or secured by Colombian Government | 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 financial assets [line items]    
Financial assets 15,817,844 10,641,558
Securities issued or secured by Colombian Government | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 15,704,043 10,623,734
Securities issued or secured by Colombian Government | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 113,801 17,824
Securities issued or secured by Colombian Government | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 22,233,814 15,207,640
Securities issued or secured by Colombian Government | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 2,368,885 3,060,268
Securities issued or secured by other Colombian Government entities | Investment securities [member] | Financial assets at amortised cost, category [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 5,351,209 5,563,208
Securities issued or secured by other Colombian Government entities | Investment securities [member] | Financial assets at amortised cost, category [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 5,351,209 5,563,208
Securities issued or secured by other Colombian Government entities | 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 financial assets [line items]    
Financial assets 213,079 183,760
Securities issued or secured by other Colombian Government entities | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 205,855 183,760
Securities issued or secured by other Colombian Government entities | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 7,224  
Securities issued or secured by other Colombian Government entities | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 257,482 173,682
Securities issued or secured by other Colombian Government entities | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 248,770 289,063
Securities issued or secured by foreign Governments | Investment securities [member] | Financial assets at amortised cost, category [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 30,540 30,655
Securities issued or secured by foreign Governments | Investment securities [member] | Financial assets at amortised cost, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 30,540 30,655
Securities issued or secured by foreign Governments | 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 financial assets [line items]    
Financial assets 492,675 75,379
Securities issued or secured by foreign Governments | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 492,675 75,379
Securities issued or secured by foreign Governments | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 1,334,686 4,502,810
Securities issued by central banks | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets   204,855
Securities issued or secured by other financial entities | Investment securities [member] | Financial assets at amortised cost, category [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 1,963,450 2,350,549
Securities issued or secured by other financial entities | Investment securities [member] | Financial assets at amortised cost, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 1,963,450 2,350,549
Securities issued or secured by other financial entities | 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 financial assets [line items]    
Financial assets 1,032,569 1,002,194
Securities issued or secured by other financial entities | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 691,834 864,036
Securities issued or secured by other financial entities | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 340,735 138,158
Securities issued or secured by other financial entities | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 658,535 813,342
Securities issued or secured by other financial entities | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 1,095,010 1,813,441
Securities issued by entities of the non-financial sector entities | Investment securities [member] | Financial assets at amortised cost, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets   145,553
Securities issued by entities of the non-financial sector entities | 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 financial assets [line items]    
Financial assets 1,939 8,813
Securities issued by entities of the non-financial sector entities | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 1,939 7,749
Securities issued by entities of the non-financial sector entities | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets   1,064
Securities issued by entities of the non-financial sector entities | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 3,003 3,968
Securities issued by entities of the non-financial sector entities | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 19,615 245,692
Other debt securities | Investment securities [member] | Financial assets at amortised cost, category [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets   64,709
Other debt securities | Investment securities [member] | Financial assets at amortised cost, category [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets   32,759
Other debt securities | Investment securities [member] | Financial assets at amortised cost, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets   31,950
Other debt securities | 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 financial assets [line items]    
Financial assets 24,738 25,710
Other debt securities | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 12,508 15,768
Other debt securities | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 12,230 9,942
Other debt securities | Investment securities at fair value [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]    
Disclosure of financial assets [line items]    
Financial assets   1,425
Other debt securities | Investment securities at fair value [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member] | Colombia, Pesos    
Disclosure of financial assets [line items]    
Financial assets   1,425
Other debt securities | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Colombia, Pesos | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets 87,176 202,264
Other debt securities | Investment securities at fair value [member] | Financial assets measured at fair value through other comprehensive income, category [member] | Foreign currency [member] | Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Financial assets $ 148,981 $ 533,173