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Long-Term Debt - Schedule of Line of Credit Facilities (Details) - USD ($)
Jun. 30, 2021
Apr. 10, 2020
Jun. 08, 2018
Revolving Credit Facility | 2018 Refinancing Credit Agreement      
Debt Instrument [Line Items]      
Maximum borrowing capacity $ 1,200,000,000.0    
Outstanding Borrowings 0    
Current Availability 1,196,400,000    
Line of Credit      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 600,000,000  
Line of Credit | Revolving Credit Facility      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 144,000,000.0  
Line of Credit | Revolving Credit Facility | 2018 Refinancing Credit Agreement      
Debt Instrument [Line Items]      
Maximum borrowing capacity     $ 1,200,000,000.0
Letters of Credit Under Credit Agreement $ (3,600,000)