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Debt - Additional Information (Details)
12 Months Ended
Jun. 22, 2018
EUR (€)
Dec. 31, 2020
USD ($)
Dec. 31, 2020
EUR (€)
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]        
Credit lines, remaining borrowing capacity   $ 270,600,000    
2022   494,000,000.0    
2023   0.0    
2024   0.0    
2025   0.0    
Notes due June 2026        
Debt Instrument [Line Items]        
Principal amount | € € 500,000,000.0   € 500,000,000.0  
Interest rate (as a percent) 1.75%      
Net proceeds | € € 495,700,000      
Discounted issue price (as a percent) 99.564%      
Effective interest rate (as a percent) 1.809%      
Notes due June 2026 | Designated as economic hedges | Euro-denominated notes        
Debt Instrument [Line Items]        
Principal amount   $ 606,700,000 500,000,000.0  
Notes due June 2018        
Debt Instrument [Line Items]        
Principal amount | € € 350,000,000.0      
Notes due September 2022        
Debt Instrument [Line Items]        
Principal amount | €     € 400,000,000.0  
Interest rate (as a percent)   1.875% 1.875%  
Notes due September 2022 | Designated as economic hedges | Euro-denominated notes        
Debt Instrument [Line Items]        
Principal amount   $ 487,800,000 € 400,000,000.0  
Uncommitted credit lines        
Debt Instrument [Line Items]        
Credit lines, maximum borrowing capacity   340,300,000    
Credit lines, remaining borrowing capacity   310,900,000    
Uncommitted credit lines | First, second, and fourth quarters        
Debt Instrument [Line Items]        
Credit lines, maximum borrowing capacity   300,000,000.0    
Uncommitted credit lines | Third quarter        
Debt Instrument [Line Items]        
Credit lines, maximum borrowing capacity   600,000,000.0    
Five year credit agreement        
Debt Instrument [Line Items]        
Credit lines, maximum borrowing capacity   600,000,000.0    
Credit lines, remaining borrowing capacity   $ 599,500,000   $ 599,500,000
Credit agreement term   5 years    
Outstanding letters of credit   $ 500,000   500,000
Credit facility, expiration date   Jun. 18, 2023    
Facility fee (as a percent)   0.125%    
Credit spread (as a percent)   1.00%    
Maximum debt-to-EBITDA ratio   0.035    
Minimum fixed charge coverage ratio   0.015    
Stand-by letters of credit        
Debt Instrument [Line Items]        
Credit lines, maximum borrowing capacity   $ 150,000,000.0    
Outstanding letters of credit   $ 0   $ 0