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Cash, Cash Equivalents, and Marketable Debt Securities - Schedule of Marketable Debt Securities in Continuous Loss Position (Details) $ in Millions | Mar. 31, 2023 USD ($) Security | Dec. 31, 2022 USD ($) Security
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Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value of Marketable Debt Securities in a Loss Position Less Than 12 Months | $ 63.1 | $ 94.7
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 91 | 132
Unrealized Losses Less Than 12 Months | $ 0.5 | $ 1.2
Fair Value of Marketable Debt Securities in a Loss Position 12 Months Or Longer | $ 56.5 | $ 48.5
Number of Marketable Debt Securities in a Loss Position 12 Months Or Longer | Security | 77 | 66
Unrealized Losses 12 Months Or Longer | $ 1.5 | $ 1.4
Corporate Debt Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value of Marketable Debt Securities in a Loss Position Less Than 12 Months | $ 50.3 | $ 77.0
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 72 | 113
Unrealized Losses Less Than 12 Months | $ 0.4 | $ 1.0
Fair Value of Marketable Debt Securities in a Loss Position 12 Months Or Longer | $ 45.1 | $ 37.9
Number of Marketable Debt Securities in a Loss Position 12 Months Or Longer | Security | 60 | 50
Unrealized Losses 12 Months Or Longer | $ 1.2 | $ 1.1
U.S. Treasury Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value of Marketable Debt Securities in a Loss Position Less Than 12 Months | $ 5.7 | $ 14.5
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 8 | 14
Unrealized Losses Less Than 12 Months | $ 0.1 | $ 0.2
Fair Value of Marketable Debt Securities in a Loss Position 12 Months Or Longer | $ 9.9 | $ 9.3
Number of Marketable Debt Securities in a Loss Position 12 Months Or Longer | Security | 14 | 13
Unrealized Losses 12 Months Or Longer | $ 0.3 | $ 0.3
U.S. Government Agency Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value of Marketable Debt Securities in a Loss Position Less Than 12 Months | $ 6.3 | $ 3.2
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 10 | 5
Unrealized Losses Less Than 12 Months | $ 0.0 | $ 0.0
Fair Value of Marketable Debt Securities in a Loss Position 12 Months Or Longer | $ 1.5 | $ 1.3
Number of Marketable Debt Securities in a Loss Position 12 Months Or Longer | Security | 3 | 3
Unrealized Losses 12 Months Or Longer | $ 0.0 | $ 0.0
Certificates of Deposit |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value of Marketable Debt Securities in a Loss Position Less Than 12 Months | $ 0.8 |
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 1 |
Unrealized Losses Less Than 12 Months | $ 0.0 |
Fair Value of Marketable Debt Securities in a Loss Position 12 Months Or Longer | $ 0.0 |
Number of Marketable Debt Securities in a Loss Position 12 Months Or Longer | Security | 0 |
Unrealized Losses 12 Months Or Longer | $ 0.0 |

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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), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 + Details
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