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Consolidated Statement of Changes in Equity and Comprehensive Income Parenthetical (USD $) In Millions | Sep. 30, 2011 | Dec. 31, 2010
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Accumulated other comprehensive loss | $ 675 | $ 597

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- Definition Accumulated other comprehensive loss + Details
Name: | iep_AccumulatedOtherComprehensiveLoss
Namespace Prefix: | iep
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant