v3.8.0.1

Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Operating Loss Carryforwards [Line Items] |  |
Decrease in valuation allowance | $ 5 |
Impact of a multi-year reserve for deductions related to domestic production activities | 143 |
Unrecognized tax benefits that would impact effective tax rate | 225 |
Decrease in unrecognized tax benefits is reasonably possible | 8 |
Net interest expense and penalties related to uncertain tax positionse | 4 |
Accrued interest and penalties for uncertain tax position | 9 | $ 5
Tax Cuts And Jobs Act Of 2017, incomplete accounting, provisional income tax benefit | $ 125 |
Projected effective rate at which position will reverse for deferred tax assets and liabilities | 21.00% |
Tax Cuts And Jobs Act Of 2017, incomplete accounting, change in tax rate, deferred tax asset, provisional income tax expense | $ 126 |
Tax Cuts And Jobs Act Of 2017, incomplete accounting, transition tax for accumulated foreign earnings, provisional income tax expense | 1 |
Domestic Tax Authority |  |
Operating Loss Carryforwards [Line Items] |  |
Operating loss and tax credit carryforwards | 44 |
State and Local Jurisdiction |  |
Operating Loss Carryforwards [Line Items] |  |
Operating loss and tax credit carryforwards | $ 42 |

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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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