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Long-Term Debt- Narrative (Details) - USD ($)
1 Months Ended 12 Months Ended
May 31, 2019
Aug. 31, 2020
Oct. 31, 2019
Jun. 30, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jun. 30, 2020
Debt Instrument [Line Items]                
Loss on debt extinguishment         $ 0 $ 14,800,000 $ 0  
Issuance of term loans         746,300,000 0 $ 0  
Debt issuance costs         $ 25,700,000 $ 23,900,000    
Line of Credit | London Interbank Offered Rate (LIBOR)                
Debt Instrument [Line Items]                
Variable rate floor         0.00%      
Senior Notes | Senior Notes                
Debt Instrument [Line Items]                
Interest rate       5.25%       5.25%
Long-term debt, face amount       $ 600,000,000.0       $ 600,000,000.0
Debt issuance costs               9,700,000
Redemption price, change of control, percent       101.00%        
Senior Notes | Senior Notes | Level 2                
Debt Instrument [Line Items]                
Estimated fair value of debt         $ 633,800,000      
Senior Notes | Senior Notes | Prior to June 1, 2022                
Debt Instrument [Line Items]                
Redemption price, percent       100.00%        
Accrued and unpaid interest, plus applicable premium (not less than)       1.00%        
Redemption price, partial redemption, percent       105.25%        
Senior Notes | Senior Notes | June 1, 2022 - May 31, 2023                
Debt Instrument [Line Items]                
Redemption price, percent       102.625%        
Senior Notes | Senior Notes | June 1, 2023 - May 31, 2024                
Debt Instrument [Line Items]                
Redemption price, percent       101.75%        
Senior Notes | Senior Notes | June 1, 2024 - May 31, 2025                
Debt Instrument [Line Items]                
Redemption price, percent       100.875%        
Senior Notes | Senior Notes | Thereafter                
Debt Instrument [Line Items]                
Redemption price, percent       100.00%        
2024 and 2027 Term Loans | Secured Debt                
Debt Instrument [Line Items]                
Prepayment of debt       $ 600,000,000.0        
2024 and 2027 Term Loans | Secured Debt | Minimum                
Debt Instrument [Line Items]                
Unused commitment fee upon achievement of certain financial ratios         0.125%      
2024 and 2027 Term Loans | Secured Debt | Maximum                
Debt Instrument [Line Items]                
Unused commitment fee upon achievement of certain financial ratios         0.375%      
2024 Term Loans | Line of Credit | London Interbank Offered Rate (LIBOR)                
Debt Instrument [Line Items]                
Basis spread on variable rate   1.75%            
2024 Term Loans | Line of Credit | London Interbank Offered Rate (LIBOR) | Option 1                
Debt Instrument [Line Items]                
Basis spread on variable rate   1.00%            
2024 Term Loans | Line of Credit | Base Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate   0.75%            
2024 Term Loans | Line of Credit | Federal Funds Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate   0.50%            
2024 Term Loans | Secured Debt                
Debt Instrument [Line Items]                
Prepayment of debt       600,000,000.0        
Loss on debt extinguishment       $ 14,500,000        
Decrease in interest rate margins     0.25%          
Discount at original issue     0.125%          
2024 Term Loans | Secured Debt | Level 2                
Debt Instrument [Line Items]                
Estimated fair value of debt         $ 1,804,000,000.0      
2027 Term Loans | Line of Credit                
Debt Instrument [Line Items]                
Long-term debt, face amount   $ 750,000,000.0            
Discount rate   0.50%            
Issuance of term loans   $ 746,300,000            
Debt issuance costs   $ 6,500,000            
Quarterly principal payment rate   0.25%            
2027 Term Loans | Line of Credit | London Interbank Offered Rate (LIBOR)                
Debt Instrument [Line Items]                
Basis spread on variable rate   2.50%            
2027 Term Loans | Line of Credit | London Interbank Offered Rate (LIBOR) | Option 1                
Debt Instrument [Line Items]                
Basis spread on variable rate   1.00%            
2027 Term Loans | Line of Credit | Base Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate   1.50%            
2027 Term Loans | Line of Credit | Federal Funds Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate   0.50%            
2027 Term Loans | Secured Debt | Level 2                
Debt Instrument [Line Items]                
Estimated fair value of debt         750,400,000      
Revolver | Line of Credit | Revolving Credit Facility                
Debt Instrument [Line Items]                
Maximum borrowing capacity               600,000,000.0
Maximum net leverage ratio 35.00%     20.00%        
Debt issuance costs               $ 3,400,000
Available borrowing capacity         $ 600,000,000.0      
Revolver | Line of Credit | Revolving Credit Facility | Maximum                
Debt Instrument [Line Items]                
Net leverage ratio       5.75        
Revolver | Line of Credit | Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum                
Debt Instrument [Line Items]                
Basis spread on variable rate       1.25%        
Revolver | Line of Credit | Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum                
Debt Instrument [Line Items]                
Basis spread on variable rate       1.75%        
Revolver | Line of Credit | Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Option 1                
Debt Instrument [Line Items]                
Basis spread on variable rate       1.00%        
Revolver | Line of Credit | Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Option 1 | Minimum                
Debt Instrument [Line Items]                
Basis spread on variable rate       0.25%        
Revolver | Line of Credit | Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Option 1 | Maximum                
Debt Instrument [Line Items]                
Basis spread on variable rate       0.75%        
Revolver | Line of Credit | Revolving Credit Facility | Federal Funds Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate       0.50%