Goodwill and Intangibles (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Goodwill [Line Items]
Business Acquisition, Cost of Acquired Entity, Purchase Price		$ 19
Goodwill, Acquired During Period	0.6	9.0
Acquired Finite-lived Intangible Asset, Amount		$ 0.5