v3.24.1.u1
Property, Plant and Equipment - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items]            
Rate of capitalization       7.89% 8.19% 8.47%
Amount capitalized       $ 17 $ 12 $ 11
Discount rate after taxes of the CGU Gas - Neuquina   14.89%   15.00%    
0 to 1 year [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Discount rate after taxes of the CGU Gas - Neuquina 14.80%       14.80%  
1 - 2 year [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Discount rate after taxes of the CGU Gas - Neuquina           14.08%
CGU Gas Neuquina Basin [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Impairment loss   $ 506        
Impairment Loss Recognised In Profit Or Loss Property Plant And Equipment,Net of tax   $ 329        
Book value of the net assets $ 2,585     $ 2,400 $ 2,585 $ 2,435
CGU Gas Austral Basin [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Impairment loss 25   $ 98     97
Impairment Loss Recognised In Profit Or Loss Property Plant And Equipment,Net of tax     $ 64   16 63
Discount rate after taxes of the CGU Gas - Neuquina     14.63%      
Recoverable value after taxes $ 65       $ 65 $ 135
CGU Oil CGU Gas Austral Basin And CGU Gas Neuquina Basin [Member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Impairment loss       1,782    
Impairment Loss Recognised In Profit Or Loss Property Plant And Equipment,Net of tax       $ 1,158