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Fair Value Measurements - Assets and Liabilities Measured on Recurring Basis (Details) - Recurring Basis - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Assets: |  |
Assets | $ 77.4 | $ 166.9
Liabilities: |  |
Contingent consideration | 30.9 | 54.7
Certificate of deposit |  |
Assets: |  |
Certificate of deposit | 2.0 | 2.0
Money Market Funds |  |
Assets: |  |
Cash and cash equivalents—money market funds | 75.4 | 164.9
Quoted Prices in Active Markets (Level 1) |  |
Assets: |  |
Assets | 75.4 | 164.9
Liabilities: |  |
Contingent consideration | 0.0 | 0.0
Quoted Prices in Active Markets (Level 1) | Certificate of deposit |  |
Assets: |  |
Certificate of deposit | 0.0 | 0.0
Quoted Prices in Active Markets (Level 1) | Money Market Funds |  |
Assets: |  |
Cash and cash equivalents—money market funds | 75.4 | 164.9
Other Observable Inputs (Level 2) |  |
Assets: |  |
Assets | 2.0 | 2.0
Liabilities: |  |
Contingent consideration | 0.0 | 0.0
Other Observable Inputs (Level 2) | Certificate of deposit |  |
Assets: |  |
Certificate of deposit | 2.0 | 2.0
Other Observable Inputs (Level 2) | Money Market Funds |  |
Assets: |  |
Cash and cash equivalents—money market funds | 0.0 | 0.0
Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Assets | 0.0 | 0.0
Liabilities: |  |
Contingent consideration | 30.9 | 54.7
Significant Unobservable Inputs (Level 3) | Certificate of deposit |  |
Assets: |  |
Certificate of deposit | 0.0 | 0.0
Significant Unobservable Inputs (Level 3) | Money Market Funds |  |
Assets: |  |
Cash and cash equivalents—money market funds | $ 0.0 | $ 0.0

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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