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Debt - Summary of Interest Expense (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Non-cash interest for amortization of debt discount and debt issuance costs	$ 0.2	$ 1.1	$ 1.2	$ 3.3
Total interest expense	10.7	12.3	39.0	36.4
Second Amended and Restated Term Loan Facility [Member]
Debt Instrument [Line Items]
Interest expense on term loan	10.4	0.0	31.1	0.0
Previous Extended Term Loan Facility [Member]
Debt Instrument [Line Items]
Interest expense on term loan	0.0	11.0	0.0	32.7
Second Amended and Restated Term Loan Facility third party fees
Debt Instrument [Line Items]
Interest expense on term loan	0.0	0.0	6.4	0.0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility interest and commitment fees	$ 0.1	$ 0.2	$ 0.3	$ 0.4

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Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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