v3.25.4

Employee Termination Benefits - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		14 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Sep. 30, 2025
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Restructuring cost and reserve	$ 0.0				$ 5.9
Research and Development
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Restructuring cost and reserve		$ 0.3		$ 1.6
General and administrative
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Restructuring cost and reserve		$ 0.9	$ 0.1	$ 2.7

X

- Definition

Restructuring cost and reserve.

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- 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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

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X

- Details

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X

- Details

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