Restructuring - Additional Information (Detail) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 27, 2015 USD ($)	Jun. 30, 2016 USD ($) Person	Jun. 27, 2015 USD ($)	Dec. 31, 2015 Person
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			600		3,000
Total restructuring costs	$ 26.8	$ 24.0	$ 27.5	$ 24.0
Water Quality Systems [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			50		100
Total restructuring costs	3.8	3.3	$ 4.3	3.3
Flow & Filtration Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			100		200
Total restructuring costs	3.7	3.7	$ 2.6	3.7
Technical Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			150		200
Total restructuring costs	3.7	3.4	$ 3.9	3.4
Valves And Controls [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			300		2,500
Total restructuring costs	14.7	13.6	$ 14.9	13.6
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 0.9	$ 0.0	$ 1.8	$ 0.0