Segment Information - Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Net sales	$ 941.1	$ 713.3	$ 1,807.0	$ 1,423.3
Segment income	161.8	111.1	318.9	211.8
Operating Segments
Segment Reporting Information [Line Items]
Net sales	941.1	713.3	1,807.0	1,423.3
Segment income	174.9	124.7	339.3	236.2
Consumer Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	576.9	401.2	1,098.3	790.0
Segment income	143.4	96.7	274.4	181.5
Industrial & Flow Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	363.9	311.8	708.0	632.7
Segment income	57.1	44.1	107.1	88.8
Other | Operating Segments
Segment Reporting Information [Line Items]
Net sales	0.3	0.3	0.7	0.6
Segment income	$ (25.6)	$ (16.1)	$ (42.2)	$ (34.1)