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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%)