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v3.20.1

Basis of Preparation of the Consolidated Financial Statements - Detailed Information About Property, Plant and Equipment (Detail) | 12 Months Ended
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Dec. 31, 2019
Buildings and other constructions [Member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 50 Years
Furniture, fixtures and installations [member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 10 Years
Selling equipment [member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 10 Years
Other Property [member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 10 Years
Bottom of range [member] | Refinery equipment and petrochemical plants [member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 20 Years
Bottom of range [member] | Infrastructure for Natural Gas Distribution [member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 20 Years
Bottom of range [member] | Transportation equipment [member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 5 Years
Top of range [member] | Refinery equipment and petrochemical plants [member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 25 Years
Top of range [member] | Infrastructure for Natural Gas Distribution [member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 50 Years
Top of range [member] | Transportation equipment [member] |
Disclosure of estimated useful life of the Property, plant and equipment [line items] |
Estimated useful life of the assets | 25 Years

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- Definition The depreciation method used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_b&doctype=Standard -URIDate 2019-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_MachineryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_OilAndGasAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_VehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |