v3.20.1
Sales and Other Operating Revenue - Revenue from Contracts with Customers (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Revenue from contracts with customers $ 6,158 $ 9,150
Customers within the scope of ASC Topic 606 [Member]    
Revenue from contracts with customers 4,911 7,059
Physical gas contracts [Member]    
Revenue from contracts with customers 1,296 2,081
Crude oil product line [Member]    
Revenue from contracts with customers 92 188
Natural Gas Product Line [Member]    
Revenue from contracts with customers 1,090 1,768
Other Products [Member]    
Revenue from contracts with customers 114 125
Financial Derivative Contracts [Member]    
Revenue from contracts with customers (49) 10
Lower 48 Segment | Physical gas contracts [Member]    
Revenue from contracts with customers 976 1,613
Canada Segment [Member] | Physical gas contracts [Member]    
Revenue from contracts with customers 179 241
Europe and North Africa Segment [Member] | Physical gas contracts [Member]    
Revenue from contracts with customers $ 141 $ 227