Information on Business Segments - Net Sales and Operating Income by Segment (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 2,053.7	$ 1,986.3	$ 6,082.0	$ 5,693.4
Operating income	$ 281.2	286.6	$ 818.7	829.9
Net Sales, Percentage Change vs. Prior Year	3.40%		6.80%
Operating Income, Percentage Change vs. Prior Year	(1.90%)		(1.30%)
Corporate [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	$ (43.0)	(27.5)	$ (110.6)	(79.3)
Operating Income, Percentage Change vs. Prior Year	(56.40%)		(39.50%)
Water Innovations [Member] \| Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 635.1	741.4	$ 1,928.6	2,057.6
Operating income	$ 152.7	166.5	$ 462.7	483.3
Net Sales, Percentage Change vs. Prior Year	(14.30%)		(6.30%)
Operating Income, Percentage Change vs. Prior Year	(8.30%)		(4.30%)
Outdoors & Security [Member] \| Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 560.4	528.4	$ 1,662.4	1,525.4
Operating income	$ 70.6	80.4	$ 223.3	211.7
Net Sales, Percentage Change vs. Prior Year	6.10%		9.00%
Operating Income, Percentage Change vs. Prior Year	(12.20%)		5.50%
Cabinets [Member] \| Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 858.2	716.5	$ 2,491.0	2,110.4
Operating income	$ 100.9	$ 67.2	$ 243.3	$ 214.2
Net Sales, Percentage Change vs. Prior Year	19.80%		18.00%
Operating Income, Percentage Change vs. Prior Year	50.10%		13.60%