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Cash and cash equivalents (Details) - COP ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Cash and cash equivalents.        
Banks $ 8,990,139 $ 7,525,552    
Short-term investments 5,061,940 4,808,610    
Cash 2,396 1,953    
Total cash and cash equivalents $ 14,054,475 $ 12,336,115 $ 15,401,058 $ 14,549,906