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Equity and Capital (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Jan. 31, 2020
Schedule of Shareholders' Equity [Line Items]              
Compensation cost         $ 100,000    
Available repurchase amount $ 375,000,000.0     $ 375,000,000.0      
Dividends, per common share (in dollars per share) $ 0.215 $ 0.215 $ 0.285 $ 0.430 $ 0.285    
Accounts Payable and Accrued Liabilities              
Schedule of Shareholders' Equity [Line Items]              
Dividends payable $ 66,300,000     $ 66,300,000   $ 66,000,000.0  
Common Stock              
Schedule of Shareholders' Equity [Line Items]              
At-the-market equity offering program             $ 400,000,000.0
At-the-market equity offering program, period       3 years      
At-the-market equity offering program, shares issued (in shares) 0     0      
At-the-market equity offering program, stock available for future issuance       $ 400,000,000.0      
Share repurchase program, number of shares authorized (in shares)         1,700,000    
Share repurchase program, average cost per share         $ 15.14    
Share repurchase program, value         $ 25,000,000.0    
Stock repurchased during period (in shares)     1,650,000        
Common Stock | RSUs              
Schedule of Shareholders' Equity [Line Items]              
Stock repurchased during period (in shares)       300,000 200,000    
Common Stock | Maximum              
Schedule of Shareholders' Equity [Line Items]              
Share repurchase program, authorized amount             $ 400,000,000.0