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Income Taxes - Textual (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investments, Owned, Federal Income Tax Note [Line Items]      
Deferred tax assets, operating loss carryforwards, domestic $ 1,700.0    
Tax credit carryforward, amount 732.5    
Deferred tax assets, operating loss carryforwards, domestic, net 361.5    
Deferred tax assets, tax credit carryforwards, general business 139.1    
Deferred tax assets, operating loss carryforwards, foreign, net 125.4    
Deferred tax assets, operating loss carryforwards, state and local 87.8    
Deferred tax assets, operating loss carryforwards, foreign 17.8    
Valuation allowance (1,420.9) $ (1,473.5)  
Other noncurrent liabilities 0.0 1.3  
Net unrecognized tax benefits 9.2 8.7  
Unrecognized tax benefits, gross interest and penalties (reversal)   0.2 $ 0.2
Unrecognized tax benefits, accrued gross interest and penalties $ 0.0 6.1 5.9
Book income tax, minimum percent 15.00%    
Global intangible low-taxed income $ 0.0 $ 0.0 $ 197.2
Decrease in Unrecognized Tax Benefits is Reasonably Possible 0.8    
Unrecognized Tax Benefits, Increase (Decrease) to Income Tax Penalties and Interest Expense 6.2    
Unrecognized Tax Benefits, Increase Resulting from Current and Prior Period Tax Positions $ 0.5    
Pillar Two effective tax rate 15.00%    
U.S. — federal      
Investments, Owned, Federal Income Tax Note [Line Items]      
Valuation allowance $ (1,000.0)    
Non-U.S.       
Investments, Owned, Federal Income Tax Note [Line Items]      
Valuation allowance $ (400.0)