Disaggregation of Sales - Schedule of Disaggregates of Net Sales of our Component Products and Real Estate Management and Development Segments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Net sales	$ 2,222.5	$ 2,296.4	$ 1,849.7
Component Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	166.6	140.8	114.5
Real Estate Management And Development [Member]
Disaggregation Of Revenue [Line Items]
Net sales	125.7	216.2	96.4
Real Estate Management And Development [Member] | Land Sales [Member]
Disaggregation Of Revenue [Line Items]
Net sales	120.9	207.8	87.0
Real Estate Management And Development [Member] | Water Delivery [Member]
Disaggregation Of Revenue [Line Items]
Net sales	3.6	6.8	7.6
Real Estate Management And Development [Member] | Utility And Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	1.2	1.6	1.8
Security Products [Member] | Component Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	114.5	105.1	87.9
Marine Components [Member] | Component Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 52.1	$ 35.7	$ 26.6