v3.26.1
EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Consolidated other comprehensive income - Components (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of analysis of other comprehensive income by item [line items]      
Balance $ 33,162,918 $ 31,520,416 $ 30,821,659
Balance 34,742,841 33,162,918 31,520,416
Accumulated other comprehensive income including non-controlling interests      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period (477,847) 813,319 516,912
Realization of OCI 10,367 (113,836) (67,054)
Total (467,480) 699,483 449,858
Accumulated other comprehensive income including non-controlling interests | Discontinued operation      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period 172,875 46,911 138,259
Realization of OCI (1,930) (261) (25,590)
Total 170,945 46,650 112,669
Accumulated other comprehensive income including non-controlling interests | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 319,735 (426,398) (988,925)
Balance 23,200 319,735 (426,398)
AOCI related to hedged items      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period (630,465) 514,713 (797,514)
Total (630,465) 514,713 (797,514)
AOCI related to hedged items | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 921,862 407,149 1,204,663
Balance 291,397 921,862 407,149
AOCI Related To Hedging Derivative Instrument | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance (230,847) (230,847) (230,847)
Balance (230,847) (230,847) (230,847)
AOCI Related To Hedging Non Derivative Instrument      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period 613,587 (500,007) 760,997
Total 613,587 (500,007) 760,997
AOCI Related To Hedging Non Derivative Instrument | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance (551,798) (51,791) (812,788)
Balance 61,789 (551,798) (51,791)
AOCI related to cash flow hedges      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period 177,520 57,474 (47,793)
Realization of OCI (518) (2,393) 11,870
Total 177,002 55,081 (35,923)
AOCI related to cash flow hedges | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 24,700 (30,381) 5,542
Balance 201,702 24,700 (30,381)
AOCI related to foreign currency translation differences from unhedged foreign operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period (372,722) 247,019 (409,671)
Total (372,722) 247,019 (409,671)
AOCI related to foreign currency translation differences from unhedged foreign operations | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 125,975 (121,044) 288,627
Balance (246,747) 125,975 (121,044)
AOCI related to transfer from owner-occupied property to investment property      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period 403 16,935 557
Realization of OCI (1,498) (194) (2,520)
Total (1,095) 16,741 (1,963)
AOCI related to transfer from owner-occupied property to investment property | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 34,259 17,518 19,481
Balance 33,164 34,259 17,518
Unrealized (losses) on securities at FVOCI      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period (357,958) (37,756) 1,758,911
Realization of OCI 56,359 (125,631) (77,185)
Total (301,599) (163,387) 1,681,726
Unrealized (losses) on securities at FVOCI | Discontinued operation      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period 173,079 50,667 139,530
Realization of OCI (1,537) 28 (25,590)
Total 171,542 50,695 113,940
Unrealized (losses) on securities at FVOCI | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance (1,290,252) (1,177,560) (2,973,226)
Balance (1,420,309) (1,290,252) (1,177,560)
Unrealized gains on equity securities at FVOCI      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period 310,647 302,346 151,517
Realization of OCI (50,596) (849) 4,866
Total 260,051 301,497 156,383
Unrealized gains on equity securities at FVOCI | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 824,268 522,771 366,388
Balance 1,084,319 824,268 522,771
Investments in associates      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period (56,424) 15,329 (35,892)
Total (56,424) 15,329 (35,892)
Investments in associates | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 175,665 160,336 196,228
Balance 119,241 175,665 160,336
Actuarial gains (losses) from defined benefit pension plans      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period 6,521 (34,208) (50,069)
Realization of OCI 6,750 21,862 (4,561)
Total 13,271 (12,346) (54,630)
Actuarial gains (losses) from defined benefit pension plans | Discontinued operation      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period (273) (5,104) (1,694)
Realization of OCI (523) (289)  
Total (796) (5,393) (1,694)
Actuarial gains (losses) from defined benefit pension plans | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance (101,733) (83,994) (27,670)
Balance (89,258) (101,733) (83,994)
Income tax relating to OCI      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period (168,956) 231,474 (814,131)
Realization of OCI (130) (6,631) 476
Total (169,086) 224,843 (813,655)
Income tax relating to OCI | Discontinued operation      
Disclosure of analysis of other comprehensive income by item [line items]      
Movements period 69 1,348 423
Realization of OCI 130    
Total 199 1,348 423
Income tax relating to OCI | Aggregate continuing and discontinued operations      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 387,636 161,445 974,677
Balance $ 218,749 $ 387,636 $ 161,445