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Revenue and Contracts with Customers - Narrative (Details) - USD ($)
$ in Millions
 6 Months Ended 42 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Government cost share, percentage 80.00%   80.00%  
Provision for Loss on Contracts Utilized $ (0.5) $ (4.7)    
Deferred revenue, revenue recognized 59.7 28.5    
Revenue, remaining performance obligation, amount 1,000.0   $ 1,000.0  
Deferred Revenue and Advances from Customers - Current and Noncurrent 311.0   311.0  
Government [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Provision for Loss on Contracts Utilized 0.5 $ 4.6 19.6  
Provision for Loss on Contracts 0.0   0.0 $ 0.5
Proceeds from Customers     143.9  
Maximum [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Government cost share portion $ 147.0   $ 147.0