v3.19.3.a.u2
Sales and Other Operating Revenue - Revenue from Contracts With Customers (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenue from contracts with customers [1] $ 32,567,000,000 $ 36,417,000,000 $ 29,106,000,000
Revenue, Performance Obligation, Description of Payment Terms Payment is typically due within 30 days or less.    
Physical gas contracts [Member]      
Revenue from contracts with customers $ 6,558,000,000 8,218,000,000 8,669,000,000
Crude oil product line [Member]      
Revenue from contracts with customers 804,000,000 1,112,000,000 588,000,000
Natural Gas Product Line [Member]      
Revenue from contracts with customers 5,313,000,000 6,734,000,000 7,811,000,000
Other Products [Member]      
Revenue from contracts with customers 441,000,000 372,000,000 270,000,000
Financial Derivative Contracts [Member]      
Revenue from contracts with customers (97,000,000) 101,000,000 (88,000,000)
Lower 48 Segment [Member]      
Revenue from contracts with customers 15,514,000,000 17,029,000,000 12,968,000,000
Lower 48 Segment [Member] | Physical gas contracts [Member]      
Revenue from contracts with customers 4,989,000,000 6,358,000,000 6,302,000,000
Canada Segment [Member]      
Revenue from contracts with customers 2,910,000,000 3,184,000,000 3,178,000,000
Canada Segment [Member] | Physical gas contracts [Member]      
Revenue from contracts with customers 691,000,000 629,000,000 864,000,000
Europe and North Africa Segment [Member] | Physical gas contracts [Member]      
Revenue from contracts with customers 878,000,000 1,231,000,000 1,503,000,000
Accounting Standards Update 2014-09 [Member]      
Revenue from contracts with customers $ 26,106,000,000 $ 28,098,000,000 $ 20,525,000,000
[1] <div>(1)Sales and other operating revenues are attributable to countries based on the location of the selling operation.</div>