Segment Information - Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net sales	$ 798.5	$ 713.6	$ 2,221.8	$ 2,202.0
Segment income	128.1	108.8	339.9	310.2
Operating Segments
Segment Reporting Information [Line Items]
Net sales	798.5	713.6	2,221.8	2,202.0
Segment income	140.5	122.8	376.7	375.6
Consumer Solutions
Segment Reporting Information [Line Items]
Net sales	470.8	377.0	1,260.8	1,172.3
Segment income	113.8	81.9	295.3	266.1
Industrial & Flow Technologies
Segment Reporting Information [Line Items]
Net sales	327.4	336.2	960.1	1,028.6
Segment income	42.7	55.9	131.5	156.6
Other
Segment Reporting Information [Line Items]
Net sales	0.3	0.4	0.9	1.1
Segment income	$ (16.0)	$ (15.0)	$ (50.1)	$ (47.1)