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Debt Facilities - Additional Information (Details) - Senior Notes [Member]
Mar. 14, 2018
EUR (€)
Mar. 31, 2018
USD ($)
Mar. 14, 2018
USD ($)
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]        
Unamortized debt issuance costs   $ (87,664,000)   $ (78,151,000)
2.875% Euro Senior Notes due 2024 [Member]        
Debt Instrument [Line Items]        
Aggregate principal debt amount issued € 750,000,000.0   $ 929,900,000.0  
Interest rate (percent) 2.875% 2.875% 2.875%  
Unamortized debt issuance costs     $ (11,600,000)  
Debt issuance cost, net of amortization   $ 11,400,000    
2.875% Euro Senior Notes due 2024 [Member] | Debt Instrument Redemption Period Prior to January One Two Thousand Eighteen [Member]        
Debt Instrument [Line Items]        
Redemption price, percentage 100.00%      
2.875% Euro Senior Notes due 2024 [Member] | Debt Instrument Redemption Period Prior to January One Two Thousand Eighteen [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Applicable premium as a percentage of principal amount 1.00%   1.00%  
2.875% Euro Senior Notes due 2024 [Member] | Treasury Rate [Member] | Debt Instrument Redemption Period Prior to January One Two Thousand Eighteen [Member]        
Debt Instrument [Line Items]        
Variable rate, basis spread 50.00%      
Redemption by Company of up to 35% of aggregate principal | 2.875% Euro Senior Notes due 2024 [Member] | Debt Instrument Redemption Period Prior to January One Two Thousand Eighteen [Member]        
Debt Instrument [Line Items]        
Senior notes indentured outstanding (percent) 35.00%      
Aggregate principal, percentage 65.00%