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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
	Oct. 26, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Dividend
Dividends declared per share (in dollars per share)		$ 0.50	$ 0.5	$ 1.50	$ 1.5
Dividends declared				$ 130.2
IEP Energy LLC
Dividend
Ownership percentage held by controlling stockholder				82.00%
Subsequent Event
Dividend
Dividends declared per share (in dollars per share)	$ 0.50
Dividends declared	$ 43.4
Subsequent Event | IEP Energy LLC | IEP Energy LLC
Dividend
Dividends declared	$ 35.6
Ownership percentage held by controlling stockholder	82.00%

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+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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=27012166&loc=d3e187085-122770

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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