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Debt - New Senior Secured Credit Facility - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended
Oct. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Debt Instrument [Line Items]        
Long-term debt   $ 2,543,000,000   $ 2,544,000,000
Deferred financing fees   $ 25,000,000   $ 26,000,000
Prior Term Loan        
Debt Instrument [Line Items]        
Long-term debt     $ 500,000,000  
Debt instrument, due date   2022    
Prior Revolving Credit Facility        
Debt Instrument [Line Items]        
Long-term debt     550,000,000  
Debt instrument, due date   2021    
New Revolving Credit Facility        
Debt Instrument [Line Items]        
Long-term debt     50,000,000  
Debt instrument extended, due date   2024    
Debt instrument, maturity month and year   2024-09    
Credit facility, commitments amount   $ 600,000,000    
Borrowing capacity at any time   300,000,000    
Available revolving credit facility   $ 595,000,000    
Commitment fee percentage   0.25%    
Amount outstanding   $ 0    
Achieved senior secured leverage ratio   0.50    
New Revolving Credit Facility | Letter of Credit        
Debt Instrument [Line Items]        
Credit facility, commitments amount   $ 75,000,000    
Available revolving credit facility   $ 5,000,000    
New Revolving Credit Facility | LIBOR        
Debt Instrument [Line Items]        
Applicable margin over base rate   1.25%    
New Revolving Credit Facility | LIBOR | First Lien Net Leverage Ratio is Above 4.00x        
Debt Instrument [Line Items]        
Applicable margin over base rate   1.75%    
New Revolving Credit Facility | LIBOR | First Lien Net Leverage Ratio is Equal to or Less Than 4.00x and above 3.50x        
Debt Instrument [Line Items]        
Applicable margin over base rate   1.50%    
New Revolving Credit Facility | LIBOR | First Lien Net Leverage Ratio is Equal to or Below 3.50x        
Debt Instrument [Line Items]        
Applicable margin over base rate   1.25%    
New Revolving Credit Facility | Base Rate | First Lien Net Leverage Ratio is Above 4.00x        
Debt Instrument [Line Items]        
Applicable margin over base rate   0.75%    
New Revolving Credit Facility | Base Rate | First Lien Net Leverage Ratio is Equal to or Less Than 4.00x and above 3.50x        
Debt Instrument [Line Items]        
Applicable margin over base rate   0.50%    
New Revolving Credit Facility | Base Rate | First Lien Net Leverage Ratio is Equal to or Below 3.50x        
Debt Instrument [Line Items]        
Applicable margin over base rate   0.25%    
New Revolving Credit Facility | Minimum | First Lien Net Leverage Ratio is Above 4.00x        
Debt Instrument [Line Items]        
Net leverage ratio   4.00    
New Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Debt instrument, due date   2022    
Debt instrument extended, due date   2026    
Deferred financing fees     5,000,000  
Debt issuance expense     1,000,000  
Required senior secured leverage ratio   5.50    
Net leverage ratio   4.00    
New Senior Secured Credit Facility | Minimum | First Lien Net Leverage Ratio is Equal to or Less Than 4.00x and above 3.50x        
Debt Instrument [Line Items]        
Net leverage ratio   3.50    
New Senior Secured Credit Facility | Maximum | First Lien Net Leverage Ratio is Equal to or Less Than 4.00x and above 3.50x        
Debt Instrument [Line Items]        
Net leverage ratio   4.00    
New Senior Secured Credit Facility | Maximum | First Lien Net Leverage Ratio is Equal to or Below 3.50x        
Debt Instrument [Line Items]        
Net leverage ratio   3.50    
Prior Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Deferred financing fees     $ 5,000,000  
New Term Loan        
Debt Instrument [Line Items]        
Applicable margin over base rate 0.25%      
Debt instrument effective interest rate   2.67%    
Debt instrument, maturity month and year   2026-03    
Principal payments on term loans   $ 2,000,000    
New Term Loan | LIBOR        
Debt Instrument [Line Items]        
Applicable margin over base rate   1.00%    
New Term Loan | Base Rate        
Debt Instrument [Line Items]        
Applicable margin over base rate   0.50%    
New Term Loan | Minimum | LIBOR        
Debt Instrument [Line Items]        
Applicable margin over base rate   1.75%    
New Term Loan | Minimum | Base Rate        
Debt Instrument [Line Items]        
Applicable margin over base rate   0.75%    
Floor rate   1.00%