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Debt and Credit Facility - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
May 21, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
May 20, 2021
Dec. 31, 2020
May 01, 2020
Apr. 28, 2020
Nov. 26, 2019
Debt Instrument                    
Loss on extinguishment of debt       $ (35,900,000)            
Interest expense capitalized   $ 200,000 $ 300,000 600,000 $ 800,000          
Revolving Credit Facility                    
Debt Instrument                    
Line of credit facility, maximum borrowing capacity   $ 375,000,000.0   $ 375,000,000.0            
4.50% Senior Notes | Senior Notes                    
Debt Instrument                    
Debt instrument contractual rate (percent)   4.50%   4.50%   4.50%        
Debt issuance, percentage of principal amount           100.00%        
Debt aggregate principal amount           $ 550,000,000.0        
Unamortized debt issuance costs   $ 8,300,000   $ 8,300,000            
Interest expense   $ 6,400,000   $ 9,300,000            
Effective interest rate (percent)   4.70%   4.70%            
Debt instrument, payment terms       Interest accrues on the 4.50% Senior Notes beginning May 20, 2021 at a rate of 4.50% per annum and is payable semiannually on June 1 and December 1 of each year. The first interest payment date is December 1, 2021.            
Debt instrument, frequency of interest payment       semiannually            
Debt Instrument, first interest payment date       Dec. 01, 2021            
Fair value of outstanding debt   $ 565,400,000   $ 565,400,000            
4.50% Senior Notes | Senior Notes | On or After June 1, 2026                    
Debt Instrument                    
Redemption price as percentage of principal (percent)       102.25%            
4.50% Senior Notes | Senior Notes | On or After June 1, 2027                    
Debt Instrument                    
Redemption price as percentage of principal (percent)       101.50%            
4.50% Senior Notes | Senior Notes | On or After June 1, 2028                    
Debt Instrument                    
Redemption price as percentage of principal (percent)       100.75%            
4.50% Senior Notes | Senior Notes | On or After June 1, 2029                    
Debt Instrument                    
Redemption price as percentage of principal (percent)       100.00%            
4.50% Senior Notes | Senior Notes | Prior to June 1, 2026                    
Debt Instrument                    
Redemption price as percentage of principal (percent)       104.50%            
Percentage of principal that can be redeemed (percent)       40.00%            
Senior Notes Due 2025 | Senior Notes                    
Debt Instrument                    
Debt instrument contractual rate (percent)     6.50%   6.50%     6.50% 6.50%  
Debt issuance, percentage of principal amount               101.00% 100.00%  
Debt aggregate principal amount               $ 50,000,000.0 $ 300,000,000.0  
Unamortized debt issuance costs $ 5,000,000.0                  
Interest expense     $ 6,000,000.0 $ 9,200,000 $ 10,200,000          
Effective interest rate (percent)   6.80%   6.80%            
Fair value of outstanding debt             $ 376,800,000      
Percentage of redemption price of principal amount 108.83%                  
Debt accrued and unpaid interest $ 1,300,000                  
Loss on extinguishment of debt (35,900,000)                  
Premium payment 30,900,000                  
Repayments of Senior Debt $ 382,200,000                  
Senior Notes Due 2028 | Senior Notes                    
Debt Instrument                    
Debt instrument contractual rate (percent)                   4.625%
Debt issuance, percentage of principal amount                   100.00%
Debt aggregate principal amount                   $ 500,000,000.0
Unamortized debt issuance costs   $ 5,800,000   $ 5,800,000            
Interest expense   $ 6,000,000.0 $ 6,000,000.0 $ 18,000,000.0 $ 18,000,000.0          
Effective interest rate (percent)   4.80%   4.80%            
Fair value of outstanding debt   $ 517,900,000   $ 517,900,000     $ 521,300,000