Information on Business Segments - Net Sales and Operating Income by Segment (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 01, 2023	Jun. 30, 2022	Jul. 01, 2023	Jun. 30, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 1,163.7	$ 1,255.4	$ 2,203.7	$ 2,395.6
Operating income	$ 152.6	219.5	$ 284.4	399.3
Operating Income, Percentage Change vs. Prior Year	(30.50%)		(28.80%)
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 1,163.7	1,255.4	$ 2,203.7	2,395.6
Net Sales, Percentage Change vs. Prior Year	(7.30%)		(8.00%)
Corporate [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	$ (50.3)	(33.7)	$ (81.1)	(63.4)
Operating Income, Percentage Change vs. Prior Year	49.30%		27.90%
Water Innovations [Member] \| Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 617.1	650.0	$ 1,211.3	1,293.6
Operating income	$ 142.1	160.7	$ 270.5	310.0
Net Sales, Percentage Change vs. Prior Year	(5.10%)		(6.40%)
Operating Income, Percentage Change vs. Prior Year	(11.60%)		(12.70%)
Outdoors [Member] \| Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 375.6	437.2	$ 665.5	780.8
Operating income	$ 61.2	67.4	$ 74.2	107.2
Net Sales, Percentage Change vs. Prior Year	(14.10%)		(14.80%)
Operating Income, Percentage Change vs. Prior Year	(9.20%)		(30.80%)
Security [Member] \| Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 171.0	168.2	$ 326.9	321.2
Operating income	$ (0.4)	$ 25.1	$ 20.8	$ 45.5
Net Sales, Percentage Change vs. Prior Year	1.70%		1.80%
Operating Income, Percentage Change vs. Prior Year	(101.60%)		(54.30%)