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Related Party Transactions - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	May 26, 2020	Mar. 09, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Dividend Per Share (in dollars per share)	$ 0.40	$ 0.80	$ 1.20	$ 3.05	$ 2.50
Dividends Paid	$ 40	$ 80	$ 121	$ 306	$ 238
IEP
Related Party Transaction [Line Items]
Dividends Paid	28	57	85	$ 218	$ 179
Stockholders
Related Party Transaction [Line Items]
Dividends Paid	$ 12	$ 23	$ 35

X

- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

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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
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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