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Long-Term Debt - Senior Notes (Details)
Jun. 27, 2020
USD ($)
May 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2017
USD ($)
tranch
Debt Instrument        
Unamortized debt issuance costs $ 14,652,000   $ 10,774,000  
Senior Secured Notes and Senior Notes        
Debt Instrument        
Debt instrument face amount       $ 800,000,000.0
Number of tranches (tranche) | tranch       2
Senior Secured Notes and Senior Notes | Senior Secured Notes Maturing May 2025        
Debt Instrument        
Senior secured notes   $ 250,000,000.0    
Debt instrument stated interest rate, percent   6.25%    
Debt instrument discount rate, percent   1.25%    
Senior Secured Notes and Senior Notes | Senior Note Maturing December 2025        
Debt Instrument        
Debt instrument stated interest rate, percent       4.63%
Debt instrument face amount       $ 400,000,000.0
Senior Secured Notes and Senior Notes | Senior Note Maturing December 2027        
Debt Instrument        
Debt instrument stated interest rate, percent       4.88%
Debt instrument face amount       $ 400,000,000.0