Segment Information - Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Net sales	$ 1,028.6	$ 999.6
Segment income	183.6	145.8
Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,028.6	999.6
Segment income	211.0	172.1
Consumer Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	272.0	205.8
Segment income	52.4	22.2
Industrial & Flow Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	391.8	358.1
Segment income	65.0	52.2
Other | Operating Segments
Segment Reporting Information [Line Items]
Net sales	0.5	0.3
Segment income	(22.6)	(18.6)
Pool | Operating Segments
Segment Reporting Information [Line Items]
Net sales	364.3	435.4
Segment income	$ 116.2	$ 116.3