Segments (Schedule of Segment Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Net sales:
Net sales	$ 344.6	$ 303.5	$ 1,005.7	$ 893.8
Income from continuing operations before income taxes:
Total segment operating income	26.4	18.3	74.7	66.3
Litigation judgment costs	0	(5.2)	0	(5.2)
Gain on acquisition of business	0	0.6	0	0.6
Interest expense	(6.5)	(6.5)	(19.4)	(19.4)
Income from continuing operations before income taxes	19.9	12.4	55.3	47.5
Identifiable assets:
Identifiable assets	873.8		873.8		818.7
Operating Segments [Member]
Net sales:
Net sales	344.6	303.5	1,005.7	893.8
Income from continuing operations before income taxes:
Total segment operating income	34.7	29.8	96.8	88.6
Operating Segments [Member] | Supply Technologies [Member]
Net sales:
Net sales	143.4	115.9	420.2	349.2
Income from continuing operations before income taxes:
Total segment operating income	12.2	9.5	32.7	28.0
Identifiable assets:
Identifiable assets	278.8		278.8		241.7
Operating Segments [Member] | Assembly Components [Member]
Net sales:
Net sales	121.6	106.1	351.7	303.9
Income from continuing operations before income taxes:
Total segment operating income	11.0	7.6	31.3	25.2
Identifiable assets:
Identifiable assets	283.9		283.9		276.7
Operating Segments [Member] | Engineered Products [Member]
Net sales:
Net sales	79.6	81.5	233.8	240.7
Income from continuing operations before income taxes:
Total segment operating income	11.5	12.7	32.8	35.4
Identifiable assets:
Identifiable assets	191.2		191.2		183.1
Segment Reconciling Items [Member]
Income from continuing operations before income taxes:
Corporate costs	(8.3)	(6.3)	(22.1)	(17.1)
Litigation judgment costs	0	(5.2)	0	(5.2)
Interest expense	(6.5)	(6.5)	(19.4)	(19.4)
General corporate [Member]
Identifiable assets:
Identifiable assets	$ 119.9		$ 119.9		$ 117.2