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Property, Plant and Equipment (Summary of Property and Equipment, net) (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Property and equipment:    
Proved $ 39,216 $ 38,051
Unproved and properties under development 937 1,081
Total oil and gas 40,153 39,132
Less accumulated DD&A (26,565) (25,596)
Oil and gas property and equipment, net 13,588 13,536
Other property and equipment 2,224 2,139
Less accumulated DD&A (699) (667)
Other property and equipment, net [1] 1,525 1,472
Total property and equipment, net $ 15,113 $ 15,008
[1] $122 million and $111 million related to CDM in 2022 and 2021, respectively.