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Financial Instruments and Fair Value - Narrative (Details)
1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2018
CHF (SFr)
Sep. 30, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jul. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Oct. 31, 2018
USD ($)
Sep. 24, 2018
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Equity method investments   $ 17,900,000 $ 17,900,000   $ 15,300,000    
Prevtec              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Maximum aggregate contingent payment   16,300,000 16,300,000 $ 16,300,000      
Foreign Exchange Contract | Net Investment Hedging | Designated as Hedging Instrument              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Term of contract 5 years            
Notional amount | SFr SFr 750,000,000            
Expected cash and contra interest per year           $ 25,000,000  
Gain to AOCI, net of tax   18,500,000          
Foreign Exchange Contract | Net Investment Hedging | Designated as Hedging Instrument | Interest Expense              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Contra interest expense   6,200,000 18,400,000        
Amortized Cost              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Term credit facility   377,500,000 377,500,000   $ 492,500,000    
Senior Notes              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Aggregate principal amount             $ 2,000,000,000.0
Senior Notes | 2.000% Senior Notes due 2021              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Aggregate principal amount   $ 500,000,000.0 $ 500,000,000.0        
Interest rate   3.912% 3.912%        
Senior Notes | 4.272% Senior Notes due 2023              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Aggregate principal amount   $ 750,000,000.0 $ 750,000,000.0        
Interest rate   4.272% 4.272%        
Senior Notes | 4.900% Senior Notes due 2028              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Aggregate principal amount   $ 750,000,000.0 $ 750,000,000.0        
Interest rate   4.90% 4.90%