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Derivatives - Interest Rate Swaps Outstanding (Details) - USD ($)
Mar. 31, 2021
Feb. 12, 2021
Dec. 31, 2020
Interest rate swaps      
Derivative [Line Items]      
Derivative, fixed interest rate   2.382%  
Derivative, notional amount $ 1,350,000,000.0 $ 900,000,000.0 $ 2,400,000,000.0
Interest Rate Swap - Entered in December 2016      
Derivative [Line Items]      
Derivative, fixed interest rate     1.7625%
Derivative, notional amount     $ 150,000,000.0
Interest Rate Swap - Entered in December 2016      
Derivative [Line Items]      
Derivative, fixed interest rate 1.904%    
Derivative, notional amount $ 450,000,000.0   450,000,000.0
Interest Rate Swap - Entered in December 2016      
Derivative [Line Items]      
Derivative, fixed interest rate 1.904%    
Derivative, notional amount $ 450,000,000.0   $ 450,000,000.0
Interest Rate Swap - Entered in December 2018      
Derivative [Line Items]      
Derivative, fixed interest rate     2.749%
Derivative, notional amount     $ 150,000,000.0
Interest Rate Swap - Entered in December 2018      
Derivative [Line Items]      
Derivative, fixed interest rate     2.735%
Derivative, notional amount     $ 150,000,000.0
Interest Rate Swap - Entered in December 2018      
Derivative [Line Items]      
Derivative, fixed interest rate     2.736%
Derivative, notional amount     $ 150,000,000.0
Interest Rate Swap - Entered in December 2018      
Derivative [Line Items]      
Derivative, fixed interest rate     2.78%
Derivative, notional amount     $ 900,000,000.0
Interest Rate Swap - Entered in February 2021      
Derivative [Line Items]      
Derivative, fixed interest rate (1.904%)    
Derivative, notional amount $ (900,000,000.0)    
Interest Rate Swap - Entered in February 2021      
Derivative [Line Items]      
Derivative, fixed interest rate 2.382%    
Derivative, notional amount $ 1,350,000,000.0