REVENUES - Schedule of Disaggregated Net Sales by Customer (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 28, 2026	Mar. 29, 2025
Disaggregation of Revenue [Line Items]
Net sales	$ 811.9	$ 773.2
Fabs
Disaggregation of Revenue [Line Items]
Net sales	493.2	473.1
Equipment and Engineering
Disaggregation of Revenue [Line Items]
Net sales	136.2	112.9
Chemical and Materials
Disaggregation of Revenue [Line Items]
Net sales	85.8	78.1
Semi Distributor and Other
Disaggregation of Revenue [Line Items]
Net sales	50.1	70.0
Non-Semi
Disaggregation of Revenue [Line Items]
Net sales	$ 46.6	$ 39.1

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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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details