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Debt - Revolving Line of Credit (Details) - Revolving Credit Facility
12 Months Ended
Dec. 31, 2020
USD ($)
Line of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity $ 750,000,000
Amount borrowed $ 0
Commitment fee percentage 0.10%
London Interbank Offered Rate (LIBOR)  
Line of Credit Facility [Line Items]  
Basis spread on variable rate 0.75%
Federal Funds Rate  
Line of Credit Facility [Line Items]  
Basis spread on variable rate 0.50%
One-Month LIBOR Rate  
Line of Credit Facility [Line Items]  
Basis spread on variable rate 1.00%
One-Month LIBOR Rate | Minimum  
Line of Credit Facility [Line Items]  
Basis spread on variable rate 0.00%