Restructuring - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Dec. 31, 2014 Person
Restructuring Cost and Reserve [Line Items]
Number of employees			1,150
Total restructuring costs	$ 0	$ 17.4
Valves & Controls
Restructuring Cost and Reserve [Line Items]
Number of employees			600
Total restructuring costs	0	9.8
Flow & Filtration Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees			350
Total restructuring costs	0	4.7
Water Quality Systems [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees			50
Total restructuring costs	0	0.3
Technical Solutions
Restructuring Cost and Reserve [Line Items]
Number of employees			150
Total restructuring costs	$ 0	$ 2.6