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Income Tax - Income Tax Benefit (Expense) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Disclosure [Line Items] |  |  |
Total deferred taxes | $ 93 | $ 143 | $ 48
Income tax benefit (expense) | 21 | 23 | (37)
Restatement Adjustment [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
The Netherlands Taxes - current | 5 |  | 5
Foreign taxes - current | (43) | (50) | (54)
Total current taxes | (38) | (50) | (49)
The Netherlands Taxes - deferred | 0 | 0 | 0
Foreign taxes - deferred | 59 | 73 | 12
Total deferred taxes | 59 | 73 | 12
Income tax benefit (expense) | $ 21 | $ 23 | $ (37)
Effective tax rate | (24.00%) | (21.00%) | (6.00%)

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- Definition Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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