v3.7.0.1

Income Taxes (Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Income Tax Contingency [Line Items] |  |  |  |
Income tax (expense) benefit | $ (63) | $ 14 | $ (2) | $ (21)
Effective Income Tax Rate, Continuing Operations | (41.00%) | 33.00% | (1.00%) | (10.00%)
Income Tax Uncertainties [Abstract] |  |  |  |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions |  |  | $ 17 |
Unrecognized Tax Benefits | $ 48 |  | 48 |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 10 |  | 10 |
Unrecognized Tax Benefit Related to Deferred Tax Asset | 38 |  | 38 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 4 |  | 4 |
Minimum [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Decrease in Unrecognized Tax Benefits is Reasonably Possible | 0 |  | 0 |
Maximum [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Decrease in Unrecognized Tax Benefits is Reasonably Possible | $ 7 |  | $ 7 |

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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 Percentage 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 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 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)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of unrecognized tax benefits. + 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=84230637&loc=SL6600010-109319 + Details
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