Segment Information - Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Net sales	$ 1,008.8	$ 1,055.1	$ 3,119.9	$ 3,118.9
Segment income	180.1	147.1	572.2	483.7
Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,008.8	1,055.1	3,119.9	3,118.9
Segment income	212.1	206.9	657.3	584.9
Consumer Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	299.4	275.3	907.6	703.3
Segment income	68.8	49.3	196.0	104.0
Industrial & Flow Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	400.2	389.5	1,203.6	1,125.0
Segment income	77.5	65.7	217.3	177.0
Other | Operating Segments
Segment Reporting Information [Line Items]
Net sales	0.4	0.3	1.3	1.2
Segment income	(24.8)	(17.4)	(67.9)	(58.4)
Pool | Operating Segments
Segment Reporting Information [Line Items]
Net sales	308.8	390.0	1,007.4	1,289.4
Segment income	$ 90.6	$ 109.3	$ 311.9	$ 362.3