Segments (Schedule of Segment Information) (Details) - USD ($) $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net sales:
Net sales	$ 347.4	$ 364.4	$ 377.3	$ 374.7	$ 373.0	$ 344.6	$ 343.3	$ 317.8		$ 1,463.8	$ 1,378.7	$ 1,203.2
Segment operating income:
Total segment operating income										97.9	97.9	85.6
Corporate costs										(29.0)	(29.3)	(23.1)
Litigation judgment and settlement costs										(2.2)	0.0	(5.2)
Gain on acquisition of business									$ 0.6	0.0	0.0	0.6
Interest expense										(27.9)	(26.1)	(25.9)
Income from continuing operations before income taxes										70.0	71.8	60.3
Identifiable assets	946.6				974.2					946.6	974.2	818.7
Depreciation and amortization expense										28.7	23.2	19.2
Capital expenditures										36.5	23.7	30.1
Supply Technologies
Net sales:
Net sales										578.7	559.6	471.9
Segment operating income:
Total segment operating income										50.3	42.5	35.0
Identifiable assets	276.3				277.6					276.3	277.6	241.7
Depreciation and amortization expense										4.7	4.5	3.0
Capital expenditures										3.7	5.8	3.8
Assembly Components
Net sales:
Net sales										569.2	490.5	412.8
Segment operating income:
Total segment operating income										57.9	42.0	31.8
Identifiable assets	344.8				340.5					344.8	340.5	276.7
Depreciation and amortization expense										18.6	14.2	11.6
Capital expenditures										27.3	14.0	21.5
Engineered Products
Net sales:
Net sales										315.9	328.6	318.5
Segment operating income:
Total segment operating income										20.9	42.7	47.1
Identifiable assets	243.1				246.9					243.1	246.9	183.1
Depreciation and amortization expense										4.2	3.3	3.4
Capital expenditures										5.5	2.4	3.6
General Corporate
Segment operating income:
Identifiable assets	$ 82.4				$ 109.2					82.4	109.2	117.2
Depreciation and amortization expense										1.2	1.2	1.2
Capital expenditures										0.0	1.5	1.2
Operating Segments
Segment operating income:
Total segment operating income										$ 129.1	$ 127.2	$ 113.9