Joint operations - Contracts in which Ecopetrol is not the operator (Details)	12 Months Ended
Dec. 31, 2024
Chipiron \| Contract where entity not operator \| Bottom of range
Joint operations
% Participation	30.00%
Chipiron \| SierraCol Energy Arauca, LLC \| Contract where entity not operator
Joint operations
Contract	Chipirón
Type	Production
% Participation	30.00%
Geographic area of operations	Colombia
Cosecha \| SierraCol Energy Arauca, LLC \| Contract where entity not operator
Joint operations
Contract	Cosecha
Type	Production
% Participation	30.00%
Geographic area of operations	Colombia
Cravo norte \| SierraCol Energy Arauca, LLC \| Contract where entity not operator
Joint operations
Contract	Cravo Norte
Type	Production
% participation in addition to PAP	55.00%
Geographic area of operations	Colombia
Rondon \| SierraCol Energy Arauca, LLC \| Contract where entity not operator
Joint operations
Contract	Rondón
Type	Production
% Participation	65.00%
Geographic area of operations	Colombia
Quifa \| Frontera Energy Colombia Corp \| Contract where entity not operator
Joint operations
Contract	Quifa
Type	Production
% participation in addition to PAP	40.00%
Geographic area of operations	Colombia
CPI Palagua \| Union Temporal Ismocol Joshi Parko
Joint operations
% Participation	100.00%
CPI Palagua \| Union Temporal Ismocol Joshi Parko \| Contract where entity not operator
Joint operations
Contract	CPI Palagua
Type	Production
Geographic area of operations	Colombia
Capachos \| Parex Resources Colombia LTD \| Contract where entity not operator
Joint operations
Contract	Capachos
Type	Production
% Participation	50.00%
Geographic area of operations	Colombia
LLA-121 \| Parex Resources Colombia LTD \| Contract where entity not operator
Joint operations
Contract	LLA-121
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
LLA-4-1 \| Parex Resources Colombia LTD \| Contract where entity not operator
Joint operations
Contract	LLA-4-1
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
LLA-16-1 \| Parex Resources Colombia LTD \| Contract where entity not operator
Joint operations
Contract	LLA-16-1
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
LLA-122 \| Parex Resources Colombia LTD \| Contract where entity not operator
Joint operations
Contract	LLA-122
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
E&P COL 1 \| Anadarko Colombia Company (OXY) \| Contract where entity not operator
Joint operations
Contract	E&P COL 1
Type	Exploration
% Participation	40.00%
Geographic area of operations	Offshore North Caribe
E&P COL 2 \| Anadarko Colombia Company (OXY) \| Contract where entity not operator
Joint operations
Contract	E&P COL 2
Type	Exploration
% Participation	40.00%
Geographic area of operations	Offshore North Caribe
E&P COL 6 \| Anadarko Colombia Company (OXY) \| Contract where entity not operator
Joint operations
Contract	E&P COL 6
Type	Exploration
% Participation	40.00%
Geographic area of operations	Offshore North Caribe
E&P COL 7 \| Anadarko Colombia Company (OXY) \| Contract where entity not operator
Joint operations
Contract	E&P COL 7
Type	Exploration
% Participation	40.00%
Geographic area of operations	Offshore North Caribe
Tayrona \| Petrobras \| Contract where entity not operator
Joint operations
Contract	Tayrona
Type	Exploration
% Participation	55.60%
Geographic area of operations	Offshore North Caribe
Fuerte Sur \| Shell EP Offshore Ventures Limited \| Contract where entity not operator
Joint operations
Contract	Fuerte Sur
Type	Exploration
% Participation	50.00%
Geographic area of operations	Offshore Caribe Norte
Purple Angel \| Shell EP Offshore Ventures Limited \| Contract where entity not operator
Joint operations
Contract	Purple Angel
Type	Exploration
% Participation	50.00%
Geographic area of operations	Offshore North Caribe
Col-5 \| Shell EP Offshore Ventures Limited \| Contract where entity not operator
Joint operations
Contract	Col-5
Type	Exploration
% Participation	50.00%
Geographic area of operations	Offshore Caribe Norte
Mana \| Interoil Colombia \| Contract where entity not operator
Joint operations
Contract	Mana
Type	Production
% Participation	30.00%
Geographic area of operations	Colombia
Rio Opia \| Interoil Colombia \| Contract where entity not operator
Joint operations
Contract	Rio Opia
Type	Production
% Participation	30.00%
Geographic area of operations	Colombia
Ambrosia \| Interoil Colombia \| Contract where entity not operator
Joint operations
Contract	Ambrosia
Type	Production
% Participation	30.00%
Geographic area of operations	Colombia
Llanos 86 \| Geopark Colombia SAS \| Contract where entity not operator
Joint operations
Contract	Llanos 86
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
Llanos 87 \| Geopark Colombia SAS \| Contract where entity not operator
Joint operations
Contract	Llanos 87
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
Llanos 104 \| Geopark Colombia SAS \| Contract where entity not operator
Joint operations
Contract	Llanos 104
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
Llanos 123 \| Geopark Colombia SAS \| Contract where entity not operator
Joint operations
Contract	Llanos 123
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
Llanos 124 \| Geopark Colombia SAS \| Contract where entity not operator
Joint operations
Contract	Llanos 124
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
SSJN1 \| Lewis Energy Colombia \| Contract where entity not operator
Joint operations
Contract	SSJN1
Type	Production
% Participation	50.00%
Geographic area of operations	Colombia
Perdices \| Lewis Energy Colombia \| Contract where entity not operator
Joint operations
Contract	Perdices
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
VIM-42 \| Lewis Energy Colombia \| Contract where entity not operator
Joint operations
Contract	VIM-42
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
SSJN3-1 \| Lewis Energy Colombia \| Contract where entity not operator
Joint operations
Contract	SSJN3-1
Type	Exploration
% Participation	50.00%
Geographic area of operations	Colombia
Gunflint \| Quarter North Energy \| Contract where entity not operator
Joint operations
Contract	Gunflint
Type	Production
% Participation	32.00%
Geographic area of operations	Gulf of Mexico
Dalmatian \| Murphy Exploration and Production Company - USA \| Contract where entity not operator
Joint operations
Contract	Dalmatian
Type	Production
% Participation	30.00%
Geographic area of operations	Gulf of Mexico
K2 \| OXY (Anadarko) \| Contract where entity not operator
Joint operations
Contract	Redeo Midland Basin
Type	Production
% Participation	21.00%
Geographic area of operations	Gulf of Mexico
ESOX \| HESS \| Contract where entity not operator
Joint operations
Contract	ESOX
Type	Production
% Participation	21.00%
Geographic area of operations	Gulf of Mexico
S-M-1707 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1707
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
S-M-1715 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1715
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
S-M-1717 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1717
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
S-M-1719 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1719
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
S-M-1709 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1709
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
S-M-1908 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1908
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
S-M-1601 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1601
% Participation	30.00%
S-M-1713 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1713
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
S-M-1817 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1817
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
S-M-1599 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1599
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
S-M-1910 \| Shell \| Contract where entity not operator
Joint operations
Contract	S-M-1910
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
Sul de Gato do Mato \| Shell \| Contract where entity not operator
Joint operations
Contract	Sul de Gato do Mato
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
BM-S-54 \| Shell \| Contract where entity not operator
Joint operations
Contract	BM-S-54
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
BM-S-72 \| Shell \| Contract where entity not operator
Joint operations
Contract	BM-S-72
Type	Exploration
% Participation	30.00%
Geographic area of operations	Brazil
Rodeo Midland Basin \| Occidental Midland Basin, LLC (Oxy) \| Contract where entity not operator
Joint operations
Contract	Rodeo Midland Basin
Type	Production
% Participation	49.00%
Geographic area of operations	Midland, Texas, USA
Delaware Basin \| Occidental Midland Basin, LLC (Oxy) \| Contract where entity not operator
Joint operations
Contract	Delaware Basin
Type	Production
% Participation	49.00%
Geographic area of operations	Delaware, TX/NM, USA
Bloque 8 \| Pemex Exploration y Production \| Contract where entity not operator
Joint operations
Contract	Bloque 8
Type	Exploration
% Participation	50.00%
Geographic area of operations	Gulf of Mexico
Bloque 6 \| PC Carigali Mexico Operation SA \| Contract where entity not operator
Joint operations
Contract	Bloque 6
Type	Exploration
% Participation	50.00%
Geographic area of operations	Gulf of Mexico

Percentage of ownership interest in joint venture in addition to PAP.

No definition available.

Name:	ec_PercentageOfOwnershipInterestInJointVentureInAdditionToPap
Namespace Prefix:	ec_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the type of contract.

+ References

No definition available.

+ Details

Name:	ec_TypeOfContract
Namespace Prefix:	ec_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfJointOperationsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The name of a joint operation. [Refer: Total for all joint operations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_i&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_NameOfJointOperation
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The principal place of business of a joint operation. [Refer: Total for all joint operations [member]; Principal place of business]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_PrincipalPlaceOfBusinessOfJointOperation
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Total for all joint operations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInJointOperation
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	duration