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Accrued liabilities and provisions - Additional information (Details)
$ in Millions, $ in Millions
 12 Months Ended 48 Months Ended
Oct. 07, 2024
USD ($)
Sep. 30, 2024
COP ($)
Sep. 30, 2024
USD ($)
Mar. 21, 2024
USD ($)
shares
Sep. 07, 2023
USD ($)
Jun. 28, 2019
USD ($)
Mar. 16, 2018
USD ($)
May 25, 2016
USD ($)
Mar. 08, 2016
USD ($)
Dec. 31, 2024
USD ($)
item
Dec. 31, 2023
Dec. 31, 2018
USD ($)
Jun. 28, 2019
COP ($)
Jun. 28, 2019
USD ($)
Mar. 16, 2018
COP ($)
Mar. 16, 2018
USD ($)
Apr. 28, 2017
COP ($)
Apr. 28, 2017
USD ($)
Disclosure of accrued liabilities and provisions [Line Items]                                    
Mandatory investments, natural resources                   1.00% 1.00%              
Minimum current plans executed | item                   240                
Percentage of forced investment                   1.00%                
Minimum Percentage of Execution of Forced Obligation                   1.00%                
Unidentified expenses                       $ 22.0            
Unidentified project cost                   $ 269.0                
Legal proceedings in process, claims made, value               $ 213.0                    
Number of former officials | item                   8                
Number of former presidents | item                   3                
Number of former financial vice-presidents | item                   5                
Equity investments                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Fair value valuation of shares   $ 915,003 $ 234.5                              
Series B Non Voting Preferred Stock                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Percentage of shares issued upon conversion       19.90%                            
McDermott International Ltd                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Proceeds from sale of business $ 475.0                                  
McDermott International Ltd | Series B Non Voting Preferred Stock                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Number of shares issued as a plan of restructuring | shares       75,000                            
Vice President                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Number of former officials being investigated | item                   5                
Refineria de Cartagena                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Amount awarded to other party         $ 1,000.0                          
Dismissal of claim amount by Plaintif         $ 400.0                          
Number of former officials being investigated | item                   8                
Legal proceedings in process, claims made, value                 $ 2,000.0                  
Contingent asset claim                             $ 432,303 $ 129.0    
Contingent asset claim invoices provisionally paid           $ 137.0 $ 139.0                      
Legal proceedings in process, claims made, value updated including interest                         $ 503,241 $ 137.0        
Contingent asset non detailed counterclaim                                 $ 387,558 $ 116.0
Contingent Asset Compliance Letter Of Credit                                   $ 70.0
Refineria de Cartagena | President                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Number of former officials being investigated | item                   3                
Refineria de Cartagena                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Legal fees       $ 9.0                            
Refineria de Cartagena | Letters of credits one                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Maximum credit loan       70.0                            
Refineria de Cartagena | Letters of credits two                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Maximum credit loan       $ 95.0                            
Exploration and Production [Member]                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Discount rate applied to cash flow projections                   5.88% 5.02%              
Transport and logistics [Member]                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Discount rate applied to cash flow projections                   6.94% 5.20%              
Refining and petrochemicals [Member]                                    
Disclosure of accrued liabilities and provisions [Line Items]                                    
Discount rate applied to cash flow projections                   6.59% 5.51%