Goodwill (Change in Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 89.5	$ 60.4	$ 49.7
Acquisitions	(6.2)	28.9	10.4
Foreign currency translation	(1.3)	0.2	0.3
Goodwill, end of period	82.0	89.5	60.4
Supply Technologies
Goodwill [Roll Forward]
Goodwill, beginning of period	7.6	6.4	0.0
Acquisitions	0.0	0.7	6.2
Foreign currency translation	(0.4)	0.5	0.2
Goodwill, end of period	7.2	7.6	6.4
Assembly Components
Goodwill [Roll Forward]
Goodwill, beginning of period	54.0	49.0	44.8
Acquisitions	0.1	5.0	4.2
Foreign currency translation	0.0	0.0	0.0
Goodwill, end of period	54.1	54.0	49.0
Engineered Products
Goodwill [Roll Forward]
Goodwill, beginning of period	27.9	5.0	4.9
Acquisitions	(6.3)	23.2	0.0
Foreign currency translation	(0.9)	(0.3)	0.1
Goodwill, end of period	$ 20.7	$ 27.9	$ 5.0