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Debt - Additional Information (Detail)
1 Months Ended 3 Months Ended
Apr. 30, 2017
USD ($)
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2017
EUR (€)
Dec. 31, 2016
Debt Instrument [Line Items]          
Consideration for repurchase of debt   $ 897,000,000      
Loss related to extinguishment of debt/credit facility   (27,800,000) $ (45,900,000)    
Other comprehensive income (loss), foreign currency transaction and translation gain (loss) arising during period, net of tax   16,000,000      
Tender Offers [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Debt instrument, repurchased face amount   1,060,000,000      
6.25% Senior Notes Due 2018 [Member]          
Debt Instrument [Line Items]          
Debt instrument, repurchased face amount   $ 63,000,000      
Senior notes rate   6.25%   6.25% 6.25%
6.25% Senior Notes Due 2018 [Member] | Subsequent Event [Member]          
Debt Instrument [Line Items]          
Senior notes rate 6.25%        
Consideration for repurchase of debt $ 195,000,000        
Loss related to extinguishment of debt/credit facility 4,000,000        
Debt Instrument, face amount $ 187,000,000        
2.60% Senior Notes Due 2019 [Member]          
Debt Instrument [Line Items]          
Debt instrument, repurchased face amount   $ 733,000,000      
Senior notes rate   2.60%   2.60% 2.60%
3.75% Senior Notes Due 2021 [Member]          
Debt Instrument [Line Items]          
Senior notes rate   3.75%   3.75% 3.75%
Debt Instrument, face amount | €       € 300,000,000  
Debt Instrument, maturity date   Oct. 01, 2021      
4.70% Senior Notes Due 2020 [Member]          
Debt Instrument [Line Items]          
Debt instrument, repurchased face amount   $ 76,000,000      
Senior notes rate   4.70%   4.70% 4.70%
Debt Instrument, face amount   $ 277,000,000