v3.26.1
ASSETS AND FINANCIAL LIABILITIES - Interest income information (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of financial assets [line items]      
Total interest income $ 22,463,395 $ 23,740,386 $ 24,427,394
Cash and cash equivalents 351,742 406,380 748,431
Other accounts receivable 154,223 220,447 177,652
Total interest income cash and cash equivalents and other accounts receivable 505,965 626,827 926,083
Investments in debt securities 2,949,838 2,604,689 2,298,222
Total interest income 25,919,198 26,971,902 27,651,699
Commercial      
Disclosure of financial assets [line items]      
Total interest income 11,525,606 12,975,916 13,849,612
Consumer      
Disclosure of financial assets [line items]      
Total interest income 8,756,681 8,805,226 8,899,807
Mortgage      
Disclosure of financial assets [line items]      
Total interest income 2,095,287 1,751,721 1,476,903
Microcredit      
Disclosure of financial assets [line items]      
Total interest income 244 48,710 71,352
Interbank and overnight funds      
Disclosure of financial assets [line items]      
Total interest income $ 85,577 $ 158,813 $ 129,720