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Other Balance Sheet Details - Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment	$ 124.9	$ 110.5
Less accumulated depreciation	(66.3)	(51.9)
Total property and equipment, net	58.6	58.6
Tenant improvements
Property, Plant and Equipment [Line Items]
Property and equipment	37.9	34.9
Scientific equipment
Property, Plant and Equipment [Line Items]
Property and equipment	58.8	51.6
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment	21.5	18.1
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment	$ 6.7	$ 5.9

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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