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Leases - Narrative (Details)
ft² in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2022
USD ($)
ft²
Dec. 31, 2021
USD ($)
Mar. 31, 2022
ft²
Lessee, Lease, Description [Line Items]      
Loss due to abandonment of facility $ 13.0    
Goodwill and long-lived asset impairment charges 16.9    
Lease cost 22.1 $ 20.7  
Variable lease expense 3.2 3.2  
Operating lease right-of-use assets 103.9 $ 81.8  
Total future lease payments $ 185.8    
Operating lease weighted average remaining lease term 10 years 3 months 18 days    
Operating lease weighted average discount rate 5.87%    
South San Francisco, California      
Lessee, Lease, Description [Line Items]      
Area of real estate property | ft² 63    
Lease term (in years) 10 years    
Operating lease right-of-use assets $ 30.7    
Operating lease, liability 30.7    
Total future lease payments 58.8    
West Salt Lake City Lease      
Lessee, Lease, Description [Line Items]      
Area of real estate property | ft²     230
Lease term (in years)     15 years
Operating lease right-of-use assets 13.9    
Operating lease, liability 13.9    
Total future lease payments 78.0    
Leasehold improvements      
Lessee, Lease, Description [Line Items]      
Impairment charge $ 3.9    
Minimum      
Lessee, Lease, Description [Line Items]      
Remaining lease terms 1 year    
Maximum      
Lessee, Lease, Description [Line Items]      
Remaining lease terms 15 years