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Cash and cash equivalents (Details) - COP ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Jun. 30, 2023
Dec. 31, 2022
Cash and cash equivalents.        
Banks $ 8,397,486 $ 7,525,552    
Short-term investments 4,836,729 4,808,610    
Cash 2,660 1,953    
Total cash and cash equivalents $ 13,236,875 $ 12,336,115 $ 11,324,835 $ 15,401,058