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Leases (Details) ft² in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) ft²	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) ft²	Sep. 30, 2021 USD ($)	Mar. 31, 2022 ft²	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Loss due to abandonment of facility			$ 8.6
Goodwill and long-lived asset impairment charges	$ 0.0	$ 0.0	10.7	$ 1.8
Operating lease right-of-use assets	$ 110.6		$ 110.6			$ 81.8
South San Francisco, California
Lessee, Lease, Description [Line Items]
Area of Real Estate Property | ft²	63		63
Lease term (in years)	10 years		10 years
Operating lease right-of-use assets	$ 30.7		$ 30.7
Operating Lease, Liability	30.7		30.7
Lessee, Operating Lease, Liability, Payments, Due	$ 58.8		$ 58.8
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms	15 years		15 years
Leasehold improvements
Lessee, Lease, Description [Line Items]
Impairment charge			$ 2.1
West Salt Lake City
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		13.9
Operating Lease, Liability	13.9		13.9
Lessee, Operating Lease, Liability, Payments, Due	$ 77.8		$ 77.8

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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