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Sales and Other Operating Revenue - Revenue from Contracts with Customers (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Revenue from contracts with customers | $ 4,386 | $ 7,756 | $ 13,293 | $ 24,859
Revenue, Performance Obligation, Description of Payment Terms |  |  | The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license. |
Customers within the scope of ASC Topic 606 [Member] |  |  |  |
Revenue from contracts with customers | 3,078 | 6,240 | $ 9,908 | 19,932
Physical gas contracts [Member] |  |  |  |
Revenue from contracts with customers | 1,280 | 1,529 | 3,432 | 4,981
Crude oil product line [Member] |  |  |  |
Revenue from contracts with customers | 100 | 266 | 218 | 619
Natural Gas Product Line [Member] |  |  |  |
Revenue from contracts with customers | 1,042 | 1,159 | 2,895 | 4,022
Other Products [Member] |  |  |  |
Revenue from contracts with customers | 138 | 104 | 319 | 340
Financial Derivative Contracts [Member] |  |  |  |
Revenue from contracts with customers | 28 | (13) | (47) | (54)
Lower 48 Segment | Physical gas contracts [Member] |  |  |  |
Revenue from contracts with customers | 1,018 | 1,099 | 2,692 | 3,823
Canada Segment [Member] | Physical gas contracts [Member] |  |  |  |
Revenue from contracts with customers | 152 | 86 | 452 | 427
Europe, Middle East and North Africa [Member] | Physical gas contracts [Member] |  |  |  |
Revenue from contracts with customers | $ 110 | $ 344 | $ 288 | $ 731

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