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Basis of Preparation of the Consolidated Financial Statements - Detailed Information About Property, Plant and Equipment (Detail)
 12 Months Ended
Dec. 31, 2021
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
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
Selling equipment [member]  
Disclosure of estimated useful life of the Property, plant and equipment [line items]  
Estimated useful life of the assets 10
Other Property [member]  
Disclosure of estimated useful life of the Property, plant and equipment [line items]  
Estimated useful life of the assets 10
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 20-25
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 20-50
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 5-25