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Debt - Additional Information (Details)
€ in Millions
1 Months Ended 12 Months Ended
Apr. 25, 2018
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2019
EUR (€)
May 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Sep. 30, 2018
Debt Instrument [Line Items]                
Debt, gross         $ 1,039,000,000.0      
Commercial paper         117,800,000 $ 76,000,000.0    
Proceeds from divestiture of businesses   $ 993,600,000     0 919,400,000 $ 0  
Total debt         1,029,100,000 787,600,000    
Other Credit Facilities                
Debt Instrument [Line Items]                
Credit facility maximum borrowing capacity         21,000,000.0      
Line of credit facility, amount outstanding         0      
Line of Credit | Revolving credit facilities                
Debt Instrument [Line Items]                
Debt, gross         $ 35,800,000 26,200,000    
Average interest rate at end of period         2.863%      
Debt term 5 years              
Line of Credit Facility, Increase (Decrease), Net       $ 100,000,000.0        
Credit facility maximum borrowing capacity $ 800,000,000.0     $ 900,000,000.0        
Remaining borrowing capacity         $ 746,400,000      
Line of Credit | Revolving credit facilities | Minimum                
Debt Instrument [Line Items]                
Covenant, unrestricted cash         $ 5,000,000.0      
Leverage ratio covenant         3.75      
EBITDA ratio covenant         1.00      
Line of Credit | Revolving credit facilities | Maximum                
Debt Instrument [Line Items]                
Covenant, unrestricted cash         $ 250,000,000.0      
Leverage ratio covenant         1.00      
EBITDA ratio covenant         3.00      
Term Loans [Member] | Term Loans, 2.914% due in 2023                
Debt Instrument [Line Items]                
Debt, gross         $ 200,000,000.0 0    
Average interest rate at end of period         2.914%      
Line of credit increase limit         $ 300,000,000.0      
Senior Notes | Senior Notes, 4.500% due in 2029 [Member]                
Debt Instrument [Line Items]                
Debt, gross         $ 400,000,000.0 0    
Average interest rate at end of period         4.50%      
Senior Notes | Senior notes 2.900% due 2018                
Debt Instrument [Line Items]                
Total debt           255,300,000    
Debt, interest rate               2.90%
Senior Notes | Senior Notes 2.450% due 2019                
Debt Instrument [Line Items]                
Debt, gross         $ 0 $ 155,100,000    
Average interest rate at end of period         2.45%      
Debt, interest rate               2.45%
Cash tender offer | €     € 363.4          
Loss on extinguishment of debt, before write off of debt issuance cost   16,000,000.0            
Write off of deferred debt issuance cost   $ 1,100,000            
Senior Notes | Senior Notes Maturing In 2019                
Debt Instrument [Line Items]                
Total debt         $ 74,000,000.0