Segment Information - Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Net sales	$ 713.3	$ 799.5	$ 1,423.3	$ 1,488.4
Segment income	111.1	133.8	211.8	201.4
Consumer Solutions
Segment Reporting Information [Line Items]
Net sales	401.2	437.1	790.0	795.3
Segment income	96.7	109.0	181.5	184.2
Industrial & Flow Technologies
Segment Reporting Information [Line Items]
Net sales	311.8	362.1	632.7	692.4
Segment income	44.1	59.7	88.8	100.7
Other
Segment Reporting Information [Line Items]
Net sales	0.3	0.3	0.6	0.7
Segment income	(16.1)	(14.6)	(34.1)	(32.1)
Operating Segments
Segment Reporting Information [Line Items]
Segment income	$ 124.7	$ 154.1	$ 236.2	$ 252.8