Restructuring - Additional Information (Detail) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 26, 2015 USD ($)	Sep. 30, 2016 USD ($) Person	Sep. 26, 2015 USD ($)	Dec. 31, 2015 Person
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			475		500
Total restructuring costs	$ 7.3	$ 7.2	$ 19.9	$ 17.6
Water Quality Systems [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			75		100
Total restructuring costs	0.2	1.5	$ 4.5	4.8
Flow & Filtration Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			100		200
Total restructuring costs	0.0	3.5	$ 2.6	7.2
Technical Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			300		200
Total restructuring costs	7.1	2.2	$ 11.0	5.6
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 0.0	$ 0.0	$ 1.8	$ 0.0