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Income Taxes - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Jul. 31, 2013
Income tax expense   $ 29,000,000 $ 36,000,000 $ 53,000,000 $ 67,000,000  
US federal statutory income tax rate   35.00% 35.00% 35.00% 35.00%  
Amortization of prepaid tax asset       $ 6,000,000    
Effective income tax rate       35.00% 33.00%  
Expense related to future taxes on repatriations from operations   $ 3,000,000 $ 2,000,000 $ 4,000,000 $ 3,000,000  
Withholding tax related to actual transfer of funds   $ 1,000,000 3,000,000 $ 2,000,000 $ 4,000,000  
Tax expense related to other adjustments     $ 6,000,000      
Senior Notes Sold In 2013 [Member]            
Senior notes issued           $ 750,000,000
Scenario, Forecast [Member]            
Possible release of valuation allowance $ 500,000,000