XML 107 R93.htm IDEA: XBRL DOCUMENT v3.10.0.1
Debt and Credit Facilities - Amended and Restated Senior Secured Credit Facilities (Details)
£ in Millions
12 Months Ended
Jul. 12, 2018
USD ($)
Dec. 31, 2018
USD ($)
Jul. 12, 2018
GBP (£)
Jul. 11, 2018
USD ($)
Interest expense, net        
Debt Instrument [Line Items]        
Amortization expense   $ 3,200,000    
Line of Credit | Revolving Credit Facility        
Debt Instrument [Line Items]        
Revolving credit facilities       $ 700,000,000
Term Loan A Facility Due July 2023        
Debt Instrument [Line Items]        
Term Loans $ 186,500,000   £ 29.4  
Third Amended And Restated Credit Agreement | Base Rate | Revolving Credit Facility | Minimum        
Debt Instrument [Line Items]        
Debt interest rate 1.25%      
Third Amended And Restated Credit Agreement | Base Rate | Revolving Credit Facility | Maximum        
Debt Instrument [Line Items]        
Debt interest rate 2.00%      
Third Amended And Restated Credit Agreement | Line of Credit | Revolving Credit Facility        
Debt Instrument [Line Items]        
Revolving credit facilities $ 1,000,000,000.0      
Loss on debt redemption and refinancing activities   1,900,000    
Accelerated amortization of original issuance discount   1,500,000    
Included in debt redemption was non-lender fees incurred   400,000    
Debt issuance lender fees $ 700,000      
Third Amended And Restated Credit Agreement | Line of Credit | Revolving Credit Facility | Other Assets        
Debt Instrument [Line Items]        
Debt issuance costs capitalized   $ 4,900,000