XML 122 R105.htm IDEA: XBRL DOCUMENT v3.23.1
Property, Plant and Equipment - Summary of Cost Evolution for Exploratory Wells in Evaluation Stage (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Property Plant And Equipment Cost Evolution [line items]      
Amount at beginning of year $ 16,003 $ 16,413  
Amount at end of year 17,510 16,003 $ 16,413
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 19 30 141
Additions pending the determination of proved reserves 20 6 1
Decreases charged to exploration expenses (3)   (16)
Reclassifications to mineral property, wells and related equipment with proved reserves (21) (17) (96)
Amount at end of year $ 15 $ 19 $ 30