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Segment and Related Information - Assets by Geographical Region (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total	$ 83.4	$ 43.5
Cash, cash equivalents, and marketable investment securities	169.7	398.8
Total	1,198.7	1,320.7
Reportable geographical components
Segment Reporting Information [Line Items]
Total	83.4	43.5
Total	1,029.0	921.9
Reportable geographical components | United States
Segment Reporting Information [Line Items]
Total	81.9	41.6
Total	983.4	870.8
Reportable geographical components | Rest of world
Segment Reporting Information [Line Items]
Total	1.5	1.9
Total	$ 45.6	$ 51.1

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Assets, Less Cash, Cash Equivalents, And Investments

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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