v3.3.1.900

Income Taxes Unrecognized Tax Benefits Roll Forward (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Disclosure [Abstract] |  |  |
Uncertain Tax Positions More Likely Than Not Largest Amount of Benefit Percentage | 50.00% |  |
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] |  |  |
Balance at beginning of period | $ 57 | $ 61 | $ 74
Additions related to current year | 9 | 11 | 0
Additions related to prior year | 0 | 0 | 16
Reductions related to prior year | (15) | (7) | (25)
Reductions due to expirations of statute of limitations | 0 | (6) | (4)
Settlements | (3) | (2) | 0
Balance at end of period | 48 | 57 | 61
Income Tax Uncertainties [Abstract] |  |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 35 | 32 |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate, Write off of Related Deferred Tax Asset | 15 | 25 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 11 | 12 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense (Benefit) | $ 1 | $ 3 | $ 3

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- Definition Represents the amount as a percentage recognized for tax positions that are more likely than not to be sustained upon examination by tax authorities. + References No definition available. + Details
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- Definition Unrecognized Tax Benefits that Would Impact Effective Tax Rate, Write off of Related Deferred Tax Asset + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + 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 (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + 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=6907707&loc=d3e32718-109319 + Details
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