Restructuring Activity (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
Restructuring Activity (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Restructuring Cost and Reserve [Line Items]
Reduction in workforce (as a percent)	15.00%
Restructuring charges (income)		$ 0.0	$ 0.2	$ 2.7	$ 0.7
Restructuring accrual		$ 0.0		0.0		$ 4.4
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges (income)			4.1		11.4
Stock Compensation And Bonus Expense
Restructuring Cost and Reserve [Line Items]
Restructuring charges (income)			4.3		10.7
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
Restructuring Cost and Reserve [Line Items]
Restructuring charges (income)			0.6	2.1	0.3
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense
Restructuring Cost and Reserve [Line Items]
Restructuring charges (income)			$ 0.4	$ 0.6	$ 1.0

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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