Segment Information - Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
Segment Reporting Information [Line Items]
Net sales	$ 1,552.1	$ 1,758.4	$ 4,688.3	$ 5,236.5
Segment Income (Loss)	249.2	295.8	720.9	833.2
Valves & Controls
Segment Reporting Information [Line Items]
Net sales	440.9	607.9	1,366.5	1,767.5
Segment Income (Loss)	55.7	107.6	175.5	282.8
Flow & Filtration Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	362.7	394.1	1,087.4	1,219.7
Segment Income (Loss)	52.8	53.5	145.0	157.6
Water Quality Systems [Member]
Segment Reporting Information [Line Items]
Net sales	322.0	324.1	1,016.6	1,006.0
Segment Income (Loss)	60.5	56.0	200.5	191.0
Technical Solutions
Segment Reporting Information [Line Items]
Net sales	432.3	438.8	1,235.2	1,262.7
Segment Income (Loss)	101.0	101.1	265.0	266.9
Other
Segment Reporting Information [Line Items]
Net sales	(5.8)	(6.5)	(17.4)	(19.4)
Segment Income (Loss)	$ (20.8)	$ (22.4)	$ (65.1)	$ (65.1)