v3.26.1
ESTIMATION OF FAIR VALUE - Measurements at fair value on a non-recurring basis, assets (Details) - COP ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of fair value measurement of assets [line items]    
Assets of disposal group held for sale $ 18,199,621  
Non-current assets held for sale 56,992  
Total assets 348,936,677 $ 327,859,383
Non-recurring fair value measurement [member]    
Disclosure of fair value measurement of assets [line items]    
Impaired collateralized loans 416,065 1,795,616
Assets of disposal group held for sale 18,199,621  
Non-current assets held for sale 56,992 105,214
Total assets 18,672,678 1,900,830
Level 3 of fair value hierarchy [member] | Non-recurring fair value measurement [member]    
Disclosure of fair value measurement of assets [line items]    
Impaired collateralized loans 416,065 1,795,616
Assets of disposal group held for sale 18,199,621  
Non-current assets held for sale 56,992 105,214
Total assets $ 18,672,678 $ 1,900,830