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Investments and Related Matters Investment Segment (Details) (USD $) In Millions, unless otherwise specified |  | 3 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2012 Investment Segment [Member] | Mar. 31, 2011 Icahn Fund Ltd. [Member] | Dec. 31, 2012 Hain [Member] Investment Segment [Member] | Dec. 31, 2012 Equity Method Investments [Member] Investment Segment [Member] | Dec. 31, 2011 Equity Method Investments [Member] Investment Segment [Member] | Dec. 31, 2010 Equity Method Investments [Member] Investment Segment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Fair value of equity method investment under fair value option | $ 314 |  |  |  |  |
Fair value option, recorded gains (losses) |  |  |  | 310 | 49 | (23)
Fair value option investment ownership percentage |  |  | 16.00% |  |  |
Liabilities, decrease from deconsolidation |  | 146 |  |  |  |
Increased equity attributable to non-controlling interests |  | $ 146 |  |  |  |

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- Definition Fair Value Option Investment Ownership Percentage + References No definition available. + Details
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- Definition The amount of the reduction or elimination during the period of a liability resulting from the parent's loss of control and deconsolidation of the entity in which one or more outside parties had a noncontrolling interest. + References No definition available. + Details
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- Definition For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 + Details
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