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Related Party Transactions - Expenses from Related Parties (Details) - USD ($) $ in Millions			3 Months Ended		9 Months Ended		12 Months Ended
	May 26, 2020	Mar. 09, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Related Party Transaction [Line Items]
Cost of materials and other			$ 1,473	$ 846	$ 4,381	$ 2,348
Dividends	$ 40	$ 80			241	121	$ 121
Enable | Joint Venture Transportation Agreement
Related Party Transaction [Line Items]
Cost of materials and other			3	3	8	9
IEP
Related Party Transaction [Line Items]
Dividends	$ 28	$ 57	$ 0	$ 0	$ 348	$ 85	$ 85

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Cost of material used for good produced and service rendered.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(2))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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- Definition

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

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+ References

No definition available.

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