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Properties, Plant and Equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Properties, Plant and Equipment      
Gross Investment at Cost $ 327,785 $ 336,045  
Gross Investment at Cost     $ 345,232
Net Investment 143,591 146,961  
Net Investment     156,618
Additions at Cost 12,290 7,796 25,546
Depreciation Expense 16,319 17,925 19,508
Dry hole expense related to prior years expenditures, net 177 35 709
Accretion expense 560 616 560
Impairment charges 950 414 2,792
Noble      
Properties, Plant and Equipment      
Gross Investment at Cost   16,703  
Net Investment   16,703  
Additions at Cost   16,703  
United States      
Properties, Plant and Equipment      
Gross Investment at Cost 130,794 125,010  
Gross Investment at Cost     127,249
Net Investment 51,789 48,871  
Net Investment     51,192
Additions at Cost 9,433 5,206 13,899
Depreciation Expense 6,172 6,798 8,095
International      
Properties, Plant and Equipment      
Gross Investment at Cost 196,991 211,035  
Gross Investment at Cost     217,983
Net Investment 91,802 98,090  
Net Investment     105,426
Additions at Cost 2,857 2,590 11,647
Depreciation Expense 10,147 11,127 11,413
Australia      
Properties, Plant and Equipment      
Net Investment 44,012 46,687  
Net Investment     48,374
Operating Segments | Upstream      
Properties, Plant and Equipment      
Gross Investment at Cost 285,146 296,150  
Gross Investment at Cost     306,401
Net Investment 125,580 130,797  
Net Investment     140,185
Additions at Cost 9,060 6,869 24,136
Depreciation Expense 14,842 16,499 17,962
Operating Segments | Upstream | United States      
Properties, Plant and Equipment      
Gross Investment at Cost 96,590 93,393  
Gross Investment at Cost     96,555
Net Investment 37,031 36,027  
Net Investment     38,175
Additions at Cost 6,461 4,520 13,067
Depreciation Expense 5,012 5,675 6,841
Operating Segments | Upstream | International      
Properties, Plant and Equipment      
Gross Investment at Cost 188,556 202,757  
Gross Investment at Cost     209,846
Net Investment 88,549 94,770  
Net Investment     102,010
Additions at Cost 2,599 2,349 11,069
Depreciation Expense 9,830 10,824 11,121
Operating Segments | Downstream      
Properties, Plant and Equipment      
Gross Investment at Cost 38,083 35,022  
Gross Investment at Cost     34,492
Net Investment 16,053 14,066  
Net Investment     14,496
Additions at Cost 2,988 777 1,211
Depreciation Expense 1,224 1,129 1,134
Operating Segments | Downstream | United States      
Properties, Plant and Equipment      
Gross Investment at Cost 29,802 26,888  
Gross Investment at Cost     26,499
Net Investment 12,827 10,766  
Net Investment     11,101
Additions at Cost 2,742 543 638
Depreciation Expense 913 833 851
Operating Segments | Downstream | International      
Properties, Plant and Equipment      
Gross Investment at Cost 8,281 8,134  
Gross Investment at Cost     7,993
Net Investment 3,226 3,300  
Net Investment     3,395
Additions at Cost 246 234 573
Depreciation Expense 311 296 283
Segment Reconciling Items      
Properties, Plant and Equipment      
Gross Investment at Cost 4,556 4,873  
Gross Investment at Cost     4,339
Net Investment 1,958 2,098  
Net Investment     1,937
Additions at Cost 242 150 199
Depreciation Expense 253 297 412
Segment Reconciling Items | United States      
Properties, Plant and Equipment      
Gross Investment at Cost 4,402 4,729  
Gross Investment at Cost     4,195
Net Investment 1,931 2,078  
Net Investment     1,916
Additions at Cost 230 143 194
Depreciation Expense 247 290 403
Segment Reconciling Items | International      
Properties, Plant and Equipment      
Gross Investment at Cost 154 144  
Gross Investment at Cost     144
Net Investment 27 20  
Net Investment     21
Additions at Cost 12 7 5
Depreciation Expense $ 6 $ 7 $ 9