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Income Taxes - Additional information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Taxes [Line Items]        
Unrecognized net operating loss carryforwards, foreign $ 1.7 $ 10.0 $ 4.1  
U.S. federal statutory income tax rate 35.00% 35.00% 35.00%  
Foreign jurisdictions income with tax holidays $ 72.2 $ 57.6 $ 73.7  
Valuation allowance for deferred tax assets 495.7 508.5    
Net increase (decrease) in valuation allowance (12.8)      
Undistributed earnings on which deferred tax liability is not provided 1,700.0      
Deferred taxes reclassified to other long-term assets 600.4 750.4    
Tax loss carryforwards 2,000.0      
Tax loss carryforwards with no expiration date 1,800.0      
Tax loss carryforwards with expiration date 217.0      
Tax credit carryforwards 371.5      
Decrease in deferred tax asset related to domestic net operating loss carryforwards 45.4      
Unrecognized tax benefits 30.4 39.7 $ 45.2 $ 34.4
Unrecognized tax benefits, interest and penalties 7.5 6.1    
Unrecognized tax benefits, interest and penalties, income tax benefit 0.4 0.4    
Interest and penalties, that if recognized would affect effective tax rate 7.4 6.1    
Decrease in unrecognized tax benefits, reasonably possible during the next twelve months 1.0      
Discrete tax benefit related to research and development credits   $ 3.4    
U.S.        
Income Taxes [Line Items]        
Valuation allowance for deferred tax assets 35.0      
International jurisdictions        
Income Taxes [Line Items]        
Valuation allowance for deferred tax assets $ 460.7      
Not designated as hedging instrument | Foreign exchange        
Income Taxes [Line Items]        
Derivative maturities 12 months 12 months    
Other current assets | ASU 2015-17        
Income Taxes [Line Items]        
Deferred taxes reclassified to other long-term assets   $ 210.8    
Accrued liabilities | ASU 2015-17        
Income Taxes [Line Items]        
Deferred taxes reclassified to other long-term assets   9.5    
Other long-term liabilities | ASU 2015-17        
Income Taxes [Line Items]        
Deferred taxes reclassified to other long-term assets   $ 3.4