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Depreciation, depletion and amortization (Tables)
 6 Months Ended
Jun. 30, 2024
Analysis of income and expense [abstract]  
Disclosure Of Detailed Information About Depreciation And Amortization Expense [Table Text Block]
SecondSecondFirstFirst
quarterquarterhalfhalf
$ million2024202320242023
Total depreciation, depletion and amortization by segment
gas & low carbon energy1,209 1,407 2,502 2,847 
oil production & operations1,698 1,370 3,355 2,697 
customers & products939 894 1,883 1,691 
other businesses & corporate252 252 508 488 
4,098 3,923 8,248 7,723 
Total depreciation, depletion and amortization by geographical area
US1,703 1,338 3,273 2,592 
Non-US2,395 2,585 4,975 5,131 
4,098 3,923 8,248 7,723