Segment Information - Financial Information by Reportable Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 28, 2015	Mar. 29, 2014
Segment Reporting Information [Line Items]
Net sales	$ 1,475.0	$ 1,644.0
Segment Income (Loss)	171.2	200.6
Valves & Controls
Segment Reporting Information [Line Items]
Net sales	429.2	531.0
Segment Income (Loss)	42.0	60.9
Flow & Filtration Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	350.1	401.1
Segment Income (Loss)	29.1	34.7
Water Quality Systems [Member]
Segment Reporting Information [Line Items]
Net sales	306.9	304.0
Segment Income (Loss)	49.3	47.7
Technical Solutions
Segment Reporting Information [Line Items]
Net sales	395.8	415.3
Segment Income (Loss)	72.7	79.0
Other
Segment Reporting Information [Line Items]
Net sales	(7.0)	(7.4)
Segment Income (Loss)	$ (21.9)	$ (21.7)