Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013 item	Dec. 31, 2012	Dec. 31, 2011
Segment Information
Number of geographic segments									3
Segment information
Net sales	$ 376.0	$ 371.8	$ 366.8	$ 358.9	$ 354.5	$ 352.8	$ 362.5	$ 357.6	$ 1,473.5	$ 1,427.4	$ 1,407.4
Operating income (loss)									111.5	123.3	133.5
Interest income									0.6	0.7	1.0
Interest expense									(21.5)	(24.6)	(25.8)
Other income (expense), net									(2.8)	0.8	(0.8)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES									87.8	100.2	107.9
Identifiable Assets (at end of period)	1,740.2				1,709.0				1,740.2	1,709.0	1,694.0
Property, plant and equipment, net (at end of period)	219.9				221.7				219.9	221.7	220.4
Capital Expenditures									27.7	30.5	22.5
Depreciation and Amortization									48.9	48.5	47.9
Number of product categories									4
Residential & commercial flow control
Segment information
Net sales									907.7	879.2	854.9
HVAC & gas
Segment information
Net sales									348.8	337.0	347.0
Drains & water re-use
Segment information
Net sales									140.0	138.8	135.3
Water quality
Segment information
Net sales									77.0	72.4	70.2
Reallocation as a result of EMEA transformation program | Residential & commercial flow control
Segment information
Net sales										90.0	100.0
Reallocation as a result of EMEA transformation program | HVAC & gas
Segment information
Net sales										(90.0)	(100.0)
Discontinued operations
Segment information
Identifiable Assets (at end of period)					11.7					11.7	27.4
Reportable segments
Segment information
Operating income (loss)									147.0	155.5	169.3
Corporate
Segment information
Operating income (loss)									(35.5)	(32.2)	(35.8)
Intersegment sales
Segment information
Net sales									186.5	155.2	144.6
Americas
Segment information
Net sales									878.5	835.0	810.9
Identifiable Assets (at end of period)	787.9				810.9				787.9	810.9	814.3
Property, plant and equipment, net (at end of period)	85.8				80.6				85.8	80.6	74.8
Capital Expenditures									18.0	17.9	8.3
Depreciation and Amortization									20.5	19.6	18.7
Americas | U.S.
Segment information
Net sales									788.7	747.4	732.9
Property, plant and equipment, net (at end of period)	81.1				75.1				81.1	75.1	69.9
Americas | Reportable segments
Segment information
Operating income (loss)									90.4	96.5	111.6
Americas | Intersegment sales
Segment information
Net sales									5.4	5.3	3.3
EMEA
Segment information
Net sales									562.2	565.6	574.8
Identifiable Assets (at end of period)	869.6				802.1				869.6	802.1	759.8
Property, plant and equipment, net (at end of period)	119.8				126.3				119.8	126.3	130.6
Capital Expenditures									8.5	10.7	13.5
Depreciation and Amortization									26.0	26.8	27.2
EMEA | Reportable segments
Segment information
Operating income (loss)									46.9	52.5	45.5
EMEA | Intersegment sales
Segment information
Net sales									10.2	10.9	8.4
Asia Pacific
Segment information
Net sales									32.8	26.8	21.7
Identifiable Assets (at end of period)	82.7				84.3				82.7	84.3	92.5
Property, plant and equipment, net (at end of period)	14.3				14.8				14.3	14.8	15.0
Capital Expenditures									1.2	1.9	0.7
Depreciation and Amortization									2.4	2.1	2.0
Asia Pacific | Reportable segments
Segment information
Operating income (loss)									9.7	6.5	12.2
Asia Pacific | Intersegment sales
Segment information
Net sales									$ 170.9	$ 139.0	$ 132.9