Segment Information - Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Net sales	$ 1,082.5	$ 1,064.2	$ 2,111.1	$ 2,063.8
Segment income	208.5	190.8	392.1	336.6
Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,082.5	1,064.2	2,111.1	2,063.8
Segment income	234.2	205.9	445.2	378.0
Consumer Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	336.2	222.2	608.2	428.0
Segment income	74.8	32.5	127.2	54.7
Industrial & Flow Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	411.6	377.4	803.4	735.5
Segment income	74.8	59.1	139.8	111.3
Other | Operating Segments
Segment Reporting Information [Line Items]
Net sales	0.4	0.6	0.9	0.9
Segment income	(20.5)	(22.4)	(43.1)	(41.0)
Pool | Operating Segments
Segment Reporting Information [Line Items]
Net sales	334.3	464.0	698.6	899.4
Segment income	$ 105.1	$ 136.7	$ 221.3	$ 253.0