Goodwill and Other Intangible Assets - Change in Goodwill (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 49.7	$ 9.5
Acquisition	4.2	40.2
Foreign currency translation	(0.1)
Goodwill, end of period	53.8	49.7
Supply Technologies [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	0	0
Acquisition	0	0
Foreign currency translation	0
Goodwill, end of period	0	0
Assembly Components [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	44.8	4.6
Acquisition	4.2	40.2
Foreign currency translation	(0.1)
Goodwill, end of period	48.9	44.8
Engineered Products [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	4.9	4.9
Acquisition	0	0
Foreign currency translation	0
Goodwill, end of period	$ 4.9	$ 4.9