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Segment Information - Reconciliation of Significant Segment Expenses from Segments to Consolidated (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |
Total cost of sales | [1],[2] | $ 284.2 | $ 268.7 | $ 826.3 | $ 836.8
Primary Reporting Segment [Member] |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |
Total cost of sales | [1],[2] | 276.1 | 258.6 | 797.5 | 802.9
China [Member] |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |
Total cost of sales | [1],[2] | $ 8.1 | $ 10.1 | $ 28.8 | $ 33.9
[1] | As a result of adopting ASU 2023-07 during the fourth quarter of 2024, the Company has expanded and updated its disclosures for the current year and prior year periods as described in Note 2, Basis of Presentation, to the Consolidated Financial Statements included in the 2024 10-K.
[2] | The significant expense categories and amounts align with the segment-level information that is regularly provided to the CODM.

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