Fair Value Measurements - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Treasury bills maturity date	6 months	6 months
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Highly liquid money market funds	$ 0.3	$ 3.0
Short-term investments in held-to-maturity securities, at amortized cost	536.6	524.4
Short-term investments in held-to-maturity securities, gross unrealized gain	7.7	5.1
Short-term investments in held-to-maturity securities, total carrying value	$ 544.3	$ 529.5