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	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Revenue - disaggregation of sales
Net sales	$ 606.1	$ 540.4	$ 1,166.2	$ 1,079.0
Component products
Revenue - disaggregation of sales
Net sales	43.6	40.3	84.2	80.6
Component products \| Security Products
Revenue - disaggregation of sales
Net sales	33.3	30.7	63.2	60.9
Component products \| Marine Components
Revenue - disaggregation of sales
Net sales	$ 10.3	$ 9.6	$ 21.0	$ 19.7

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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- 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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