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Loans and borrowings - Breakdown by type of interest rate and currency (Details) - COP ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Loans and borrowings    
Borrowings $ 105,815,527 $ 115,134,839
Local currency    
Loans and borrowings    
Borrowings 10,417,990 7,981,849
Foreign currency    
Loans and borrowings    
Borrowings 95,397,537 107,152,990
Fixed interest rate | Local currency    
Loans and borrowings    
Borrowings 2,030,378 1,844,086
Fixed interest rate | Foreign currency    
Loans and borrowings    
Borrowings 70,956,700 82,850,932
Floating interest rate | Local currency    
Loans and borrowings    
Borrowings 8,387,612 6,137,763
Floating interest rate | Foreign currency    
Loans and borrowings    
Borrowings $ 24,440,837 $ 24,302,058