Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
2024 Convertible Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument Fair Value	$ 726.2	$ 846.1
Net carrying value	564.7	563.7
2019 Term Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument Fair Value	548.4	576.1
Net carrying value	$ 536.1	$ 533.2

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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