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Revenues - Summary of Breakdown of Revenues by Sales Channels (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of revenue [line items]      
Sales of goods and services $ 18,437 $ 13,384 $ 9,556
Gas Stations [member]      
Disclosure of revenue [line items]      
Sales of goods and services 6,673 4,898 3,439
Power plants [member]      
Disclosure of revenue [line items]      
Sales of goods and services 446 616 388
Distribution companies [member]      
Disclosure of revenue [line items]      
Sales of goods and services 266 255 410
Retail distribution of natural gas [member]      
Disclosure of revenue [line items]      
Sales of goods and services 378 382 391
Industries, transport and aviation [member]      
Disclosure of revenue [line items]      
Sales of goods and services 4,694 2,693 1,671
Agriculture [member]      
Disclosure of revenue [line items]      
Sales of goods and services 2,697 1,917 1,303
Petrochemical industry [member]      
Disclosure of revenue [line items]      
Sales of goods and services 722 671 330
Trading [member]      
Disclosure of revenue [line items]      
Sales of goods and services 901 576 575
Oil companies [member]      
Disclosure of revenue [line items]      
Sales of goods and services 688 570 367
Commercialization of liquefied petroleum gas [member]      
Disclosure of revenue [line items]      
Sales of goods and services 177 149 94
Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services 795 657 588
Upstream [member]      
Disclosure of revenue [line items]      
Sales of goods and services 51 49 33
Upstream [member] | Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services 51 49 33
Downstream [member]      
Disclosure of revenue [line items]      
Sales of goods and services 15,898 11,145 7,746
Downstream [member] | Gas Stations [member]      
Disclosure of revenue [line items]      
Sales of goods and services 6,673 4,898 3,439
Downstream [member] | Power plants [member]      
Disclosure of revenue [line items]      
Sales of goods and services 13 131 197
Downstream [member] | Industries, transport and aviation [member]      
Disclosure of revenue [line items]      
Sales of goods and services 3,890 2,104 1,256
Downstream [member] | Agriculture [member]      
Disclosure of revenue [line items]      
Sales of goods and services 2,697 1,917 1,303
Downstream [member] | Petrochemical industry [member]      
Disclosure of revenue [line items]      
Sales of goods and services 722 671 330
Downstream [member] | Trading [member]      
Disclosure of revenue [line items]      
Sales of goods and services 901 576 575
Downstream [member] | Oil companies [member]      
Disclosure of revenue [line items]      
Sales of goods and services 688 570 367
Downstream [member] | Commercialization of liquefied petroleum gas [member]      
Disclosure of revenue [line items]      
Sales of goods and services 177 149 94
Downstream [member] | Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services 137 129 185
Gas and power [member]      
Disclosure of revenue [line items]      
Sales of goods and services 2,104 1,852 1,590
Gas and power [member] | Power plants [member]      
Disclosure of revenue [line items]      
Sales of goods and services 433 485 191
Gas and power [member] | Distribution companies [member]      
Disclosure of revenue [line items]      
Sales of goods and services 266 255 410
Gas and power [member] | Retail distribution of natural gas [member]      
Disclosure of revenue [line items]      
Sales of goods and services 378 382 391
Gas and power [member] | Industries, transport and aviation [member]      
Disclosure of revenue [line items]      
Sales of goods and services 804 589 415
Gas and power [member] | Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services 223 141 183
Central Administration and Others [member]      
Disclosure of revenue [line items]      
Sales of goods and services 384 338 187
Central Administration and Others [member] | Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services $ 384 $ 338 $ 187