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Other (Income) Expense - Net (Narrative) (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Sep. 29, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Other Income and Expenses [Abstract] |  |  |  |
Equity Sold, Percentage |  |  |  | 50.00%
Extinguishment of Debt, Amount | $ 559 | $ 559 |  |
Debt purchase transaction costs |  |  |  | $ 7
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities |  | $ 0 | $ 6 | 0
Loss Contingency, Loss in Period |  |  |  | $ 45

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- Definition Transaction costs incurred related to the debt purchase. + References No definition available. + Details
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- Definition Equity Sold, Percentage + References No definition available. + Details
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- Definition Gross amount of debt extinguished. + References No definition available. + Details
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- Definition The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
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- References No definition available. + Details
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- Definition The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 8A -URI http://asc.fasb.org/extlink&oid=82896770&loc=SL6284422-111562 + Details
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