XML 126 R105.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Property, Plant and Equipment - Summary of Cost Evolution for Exploratory Wells in Evaluation Stage (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure Of Property Plant And Equipment Cost Evolution [line items]      
Amount at beginning of year $ 17,510 $ 16,003  
Amount at end of year 17,712 17,510 $ 16,003
Disclosure of Property plant and Equipment Cost evolution for the exploratory wells in evaluation stage [member]      
Disclosure Of Property Plant And Equipment Cost Evolution [line items]      
Amount at beginning of year 15 19 30
Additions pending the determination of proved reserves 16 20 6
Decreases charged to exploration expenses   (3)  
Reclassifications to mineral property, wells and related equipment with proved reserves (5) (21) (17)
Amount at end of year $ 26 $ 15 $ 19