Restructuring - Additional Information (Detail) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 27, 2015 USD ($)	Jun. 28, 2014 USD ($)	Jun. 27, 2015 USD ($) Person	Jun. 28, 2014 USD ($)	Dec. 31, 2014 Person
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			650		1,150
Total restructuring costs	$ 24.0	$ 35.5	$ 24.0	$ 52.9
Valves & Controls
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			400		600
Total restructuring costs	13.6	17.9	$ 13.6	27.7
Flow & Filtration Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			150		350
Total restructuring costs	3.7	7.6	$ 3.7	12.3
Water Quality Systems [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			25		50
Total restructuring costs	3.3	6.8	$ 3.3	7.1
Technical Solutions
Restructuring Cost and Reserve [Line Items]
Number of employees | Person			75		150
Total restructuring costs	$ 3.4	$ 3.2	$ 3.4	$ 5.8