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Marketable Securities - Schedule of Marketable Securities (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items] |  |
Market value, available for sale securities, current | $ 101.0 | $ 75.1
Market value, available for sale securities, noncurrent | 1.6 | 1.2
Non Current Assets |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Market value, available for sale securities, noncurrent | 1.6 | 1.2
Cost or amortized cost | 1.6 | 1.2
Current Assets |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Market value, available for sale securities, current | 101.0 | 75.1
Cost or amortized cost | 101.5 | 75.7
Unrealized loss, net | $ (0.5) | $ (0.6)

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- Definition Amortized cost 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 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 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 + Details
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- Definition Amount of investment in marketable security, classified as current. + References No definition available. + Details
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- Definition Amount of unrealized gain (loss) on investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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