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Stock-Based Compensation - Restricted Share Units (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Performance-Based Restricted Share Units without Market Condition      
Shares Granted      
Outstanding at the beginning of the period (in shares)   11,000 17,000
Awarded (in shares) 0   15,000
Vested (in shares)   (9,000) (2,000)
Cancelled (in shares)   (2,000) (19,000)
Outstanding at the end of the period (in shares) 0   11,000
Weighted-Average Grant Date Fair Value      
Outstanding at the beginning of the period (in dollars per share)   $ 54.17 $ 36.49
Awarded (in dollars per share) $ 0   54.08
Vested (in dollars per share)   54.17 38.78
Cancelled (in dollars per share)   $ 54.17 40.63
Outstanding at the end of the period (in dollars per share) $ 0   $ 54.17
Unrecognized compensation cost $ 0.0 $ 0.0  
Number of shares vested   9,000 2,000
Performance-Based Restricted Share Units with Market Condition      
Shares Granted      
Outstanding at the beginning of the period (in shares) 1,640,000 0  
Awarded (in shares) 1,640,000 1,640,000  
Vested (in shares) 0 0  
Cancelled (in shares) 0 0  
Outstanding at the end of the period (in shares) 3,280,000 1,640,000 0
Weighted-Average Grant Date Fair Value      
Outstanding at the beginning of the period (in dollars per share) $ 8.43    
Awarded (in dollars per share) 9.66 $ 8.43  
Outstanding at the end of the period (in dollars per share) $ 9.04 $ 8.43  
Unrecognized compensation cost $ 1.7 $ 4.7  
Expected weighted-average recognition period for unrecognized compensation cost 4 months 24 days 4 months 24 days  
Number of shares vested 0 0  
Service Based Restricted Stock Units RSU      
Shares Granted      
Outstanding at the beginning of the period (in shares) 5,110,000 7,839,000 4,324,000
Awarded (in shares) 144,000 252,000 5,737,000
Vested (in shares) (2,191,000) (2,330,000) (1,608,000)
Cancelled (in shares) (253,000) (651,000) (614,000)
Outstanding at the end of the period (in shares) 2,810,000 5,110,000 7,839,000
Weighted-Average Grant Date Fair Value      
Outstanding at the beginning of the period (in dollars per share) $ 43.71 $ 45.37 $ 41.86
Awarded (in dollars per share) 17.27 20.59 47.95
Vested (in dollars per share) 43.04 47.09 45.66
Cancelled (in dollars per share) 38.66 42.69 44.02
Outstanding at the end of the period (in dollars per share) $ 43.37 $ 43.71 $ 45.37
Unrecognized compensation cost $ 84.0 $ 162.0  
Expected weighted-average recognition period for unrecognized compensation cost 1 year 8 months 12 days 2 years 6 months  
Number of shares vested 2,191,000 2,330,000 1,608,000
Total fair value vested $ 94.3 $ 109.7 $ 73.4