Revenue - disaggregation of sales - Schedule of Disaggregates of Net Sales of our Component Products and Real Estate Management and Development Segments (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Disaggregation Of Revenue [Line Items]
Net sales	$ 538.6	$ 530.6
Component products
Disaggregation Of Revenue [Line Items]
Net sales	40.3	38.0
Component products \| Security Products
Disaggregation Of Revenue [Line Items]
Net sales	30.2	29.9
Component products \| Marine Components
Disaggregation Of Revenue [Line Items]
Net sales	$ 10.1	$ 8.1

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.

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