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
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

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.

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-Name Accounting Standards Codification
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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.

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Number of investments in debt securities 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 an allowance for credit loss. Includes beneficial interest in securitized financial asset.

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