Segment Information - Reconciliation of Significant Segment Expenses from Segments to Consolidated (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||||||
| Total cost of sales | [1],[2] | $ 276.9 | $ 283.1 | $ 542.1 | $ 568.1 | |||
| Primary Reporting Segment [Member] | ||||||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||||||
| Total cost of sales | [1],[2] | 265.5 | 270.9 | 521.4 | 544.3 | |||
| China [Member] | ||||||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||||||
| Total cost of sales | [1],[2] | $ 11.4 | $ 12.2 | $ 20.7 | $ 23.8 | |||
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