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Cash, Cash Equivalents, and Marketable Debt Securities - Schedule of Marketable Debt Securities in Continuous Loss Position (Details) $ in Millions | Jun. 30, 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 | $ 96.5 | $ 94.7
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 117 | 132
Unrealized Losses Less Than 12 Months | $ 0.8 | $ 1.2
Fair Value of Marketable Debt Securities in a Loss Position 12 Months Or Longer | $ 45.7 | $ 48.5
Number of Marketable Debt Securities in a Loss Position 12 Months Or Longer | Security | 61 | 66
Unrealized Losses 12 Months Or Longer | $ 1.1 | $ 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 | $ 62.9 | $ 77.0
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 76 | 113
Unrealized Losses Less Than 12 Months | $ 0.5 | $ 1.0
Fair Value of Marketable Debt Securities in a Loss Position 12 Months Or Longer | $ 35.9 | $ 37.9
Number of Marketable Debt Securities in a Loss Position 12 Months Or Longer | Security | 48 | 50
Unrealized Losses 12 Months Or Longer | $ 0.9 | $ 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 | $ 20.6 | $ 14.5
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 20 | 14
Unrealized Losses Less Than 12 Months | $ 0.2 | $ 0.2
Fair Value of Marketable Debt Securities in a Loss Position 12 Months Or Longer | $ 9.0 | $ 9.3
Number of Marketable Debt Securities in a Loss Position 12 Months Or Longer | Security | 12 | 13
Unrealized Losses 12 Months Or Longer | $ 0.2 | $ 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 | $ 10.9 | $ 3.2
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 18 | 5
Unrealized Losses Less Than 12 Months | $ 0.1 | $ 0.0
Fair Value of Marketable Debt Securities in a Loss Position 12 Months Or Longer | $ 0.8 | $ 1.3
Number of Marketable Debt Securities in a Loss Position 12 Months Or Longer | Security | 1 | 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 | $ 2.1 |
Number of Marketable Debt Securities in a Loss Position Less Than 12 Months | Security | 3 |
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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