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Income Taxes (Details 6) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Tax Act Enactment [Line Items] |  |  |
Undistributed Earnings of Foreign Subsidiaries | $ 3,200 |  |
Tax Credit Carryforward, Valuation Allowance | $ 189 |  |
U.S. Federal Tax Rate, prior to 2017 Tax Act [Domain] |  |  |
Tax Act Enactment [Line Items] |  |  |
U.S. federal statutory rate (in hundredths) | 35.00% |  |
U.S. Federal Tax Rate, updated for 2017 Tax Act [Domain] |  |  |
Tax Act Enactment [Line Items] |  |  |
U.S. federal statutory rate (in hundredths) | 21.00% |  |
Limit on deductibility of interest expense | 30.00% |  |
Remeasurement of Deferreds [Domain] |  |  |
Tax Act Enactment [Line Items] |  |  |
Income tax provision | $ 75 |  |
Continuing Operations [Member] |  |  |
Tax Act Enactment [Line Items] |  |  |
U.S. federal statutory rate (in hundredths) | 35.00% | 35.00% | 35.00%
Deferred Tax Liabilities Deemed Repatriation | $ 170 | $ 0 |
Income tax provision | 934 | 327 | $ 327
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | $ 434 | $ 0 | $ 0

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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