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Long-term Debt - Senior Unsecured Notes, Unsecured Convertible Notes, and Covenants (Details)
1 Months Ended 12 Months Ended
May 31, 2020
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Jul. 01, 2021
USD ($)
Jan. 19, 2017
USD ($)
Debt Instrument [Line Items]              
(Decrease) increase from adoption   $ 2,858,400,000 $ 3,199,600,000 $ 3,596,600,000 $ 4,097,100,000    
Additional Paid-In Capital              
Debt Instrument [Line Items]              
(Decrease) increase from adoption   4,542,400,000 4,436,600,000 4,220,200,000 4,239,600,000    
Retained Earnings (Accumulated Deficit)              
Debt Instrument [Line Items]              
(Decrease) increase from adoption   $ (647,000,000.0) (335,500,000) $ 154,500,000 (86,500,000)    
Cumulative Effect, Period of Adoption, Adjustment              
Debt Instrument [Line Items]              
(Decrease) increase from adoption         (69,300,000)    
Cumulative Effect, Period of Adoption, Adjustment | Additional Paid-In Capital              
Debt Instrument [Line Items]              
(Decrease) increase from adoption         (88,200,000)    
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings (Accumulated Deficit)              
Debt Instrument [Line Items]              
(Decrease) increase from adoption         $ 18,900,000    
Debt Instrument, Redemption, Period One              
Debt Instrument [Line Items]              
Threshold percentage of stock price 130.00%            
Debt Instrument, Redemption, Period Two              
Debt Instrument [Line Items]              
Threshold percentage of stock price 98.00%            
Debt Instrument, Redemption, Period Three              
Debt Instrument [Line Items]              
Threshold percentage of stock price 100.00%            
5.625% Notes due 2027 | Senior notes              
Debt Instrument [Line Items]              
Debt principal amount             $ 400,000,000.0
Interest rate   5.625%         5.625%
4.125% Notes due 2029 | Senior notes              
Debt Instrument [Line Items]              
Debt principal amount           $ 400,000,000.0  
Interest rate   4.125%       4.125%  
2.75% Convertible Notes due 2026 | Senior notes | Debt Instrument, Redemption, Period One              
Debt Instrument [Line Items]              
Debt Instrument, convertible, conversion ratio 0.0427350            
2.75% Convertible Notes due 2026 | Senior notes | Debt Instrument, Redemption, Period Two              
Debt Instrument [Line Items]              
Debt Instrument, convertible, conversion ratio 0.0555555            
2.75% Convertible Notes due 2026 | Convertible Notes              
Debt Instrument [Line Items]              
Debt principal amount $ 330,500,000 $ 330,500,000 330,500,000        
Interest rate 2.75% 2.75%          
Proceeds from issuance of long-term debt, net of discounts $ 322,200,000            
Conversion price (in dollars per share) | $ / shares $ 23.40            
Number of shares issued upon conversion (in shares) | shares   18,360,815          
Amount if-converted value exceeds its principal amount   $ 33,400,000          
Debt conversion, converted instrument, amount   $ 0 $ 0        
Carrying amount of equity component $ 91,800,000            
Debt issuance costs 10,200,000            
Effective yield   3.329%          
Remaining term   1 year 4 months 24 days          
Convertible Notes Due 2026, Liability Component | Convertible Notes              
Debt Instrument [Line Items]              
Debt issuance costs 6,600,000            
Convertible Notes Due 2026, Equity Component | Convertible Notes              
Debt Instrument [Line Items]              
Debt issuance costs $ 3,600,000