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Sales and Other Operating Revenues (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	Millions of Dollars 2019 2018 2017 Revenue from contracts with customers $ 26,106 28,098 20,525 Revenue from contracts outside the scope of ASC Topic 606 Physical contracts meeting the definition of a derivative 6,558 8,218 8,669 Financial derivative contracts (97) 101 (88) Consolidated sales and other operating revenues $ 32,567 36,417 29,106 Millions of Dollars 2019 2018 2017 Revenue from Outside the Scope of ASC Topic 606 by Segment Lower 48 $ 4,989 6,358 6,302 Canada 691 629 864 Europe, Middle East and North Africa 878 1,231 1,503 Physical contracts meeting the definition of a derivative $ 6,558 8,218 8,669 Millions of Dollars 2019 2018 2017 Revenue from Outside the Scope of ASC Topic 606 by Product Crude oil $ 804 1,112 588 Natural gas 5,313 6,734 7,811 Other 441 372 270 Physical contracts meeting the definition of a derivative $ 6,558 8,218 8,669
Contract with Customer, Asset and Liability [Table Text Block]	Millions of Dollars Contract Liabilities At December 31, 2018 $ 206 Contractual payments received 73 Revenue recognized (199) At December 31, 2019 $ 80

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- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045

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- References

No definition available.

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