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NET INCOME FROM CONTRACTS WITH CUSTOMERS - Income and cost for goods and services (Details) - COP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure Of Income From Contract With Customers [Line Items] |  |  |
Total income from sales of good and services | $ 11,223,556 | $ 12,141,327 | $ 10,450,914
Cost of sales from companies from non-financial sector | (5,799,721) | (5,575,912) | (5,594,615)
Allowance for impairment of loans and receivables | (51,035) | (59,073) | (51,064)
General and administrative expenses | (989,313) | (843,125) | (647,425)
Personnel expenses | (607,894) | (609,050) | (558,561)
Amortization of intangible assets | (353,305) | (305,488) | (263,755)
Depreciation of tangible assets | (90,344) | (103,972) | (117,246)
Depreciation of right of use assets | (37,031) | (35,294) | (34,374)
Employee bonuses | (14,376) | (11,569) | (38,766)
Commissions and fees expenses | (39,466) | (34,646) | (27,886)
Donations expenses | (19,858) | (16,739) | (16,178)
Labor severances | (3,254) | (1,363) | (2,109)
Total costs and expenses of sales goods and services | (8,005,597) | (7,596,231) | (7,351,979)
Gross profit from sales of goods and services | 3,217,959 | 4,545,096 | 3,098,935
Energy and Gas |  |  |
Disclosure Of Income From Contract With Customers [Line Items] |  |  |
Income from goods and services from non-financial sector | 6,158,616 | 5,718,808 | 4,874,278
Infrastructure |  |  |
Disclosure Of Income From Contract With Customers [Line Items] |  |  |
Income from goods and services from non-financial sector | 3,954,197 | 5,330,193 | 4,662,912
Hotels |  |  |
Disclosure Of Income From Contract With Customers [Line Items] |  |  |
Income from goods and services from non-financial sector | 598,895 | 532,337 | 285,692
Agribusiness |  |  |
Disclosure Of Income From Contract With Customers [Line Items] |  |  |
Income from goods and services from non-financial sector | 296,804 | 340,984 | 218,511
Other services |  |  |
Disclosure Of Income From Contract With Customers [Line Items] |  |  |
Income from goods and services from non-financial sector | $ 215,044 | $ 219,005 | $ 409,521

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