Goodwill and Other Intangible Assets - Acquired Intangible Assets Other Than Goodwill Narrative (Details) (All Business Acquisitions [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Acquired Intangible Assets by Major Class [Line Items]
Acquired Total Intangible Assets, Amount	$ 70.2
Customer Relationships [Member]
Acquired Intangible Assets by Major Class [Line Items]
Acquired Finite-lived Intangible Asset, Amount	48.4
Finite-Lived Intangible Assets, Useful Life	9 years
Technology and Other [Member]
Acquired Intangible Assets by Major Class [Line Items]
Acquired Finite-lived Intangible Asset, Amount	8.0
Finite-Lived Intangible Assets, Useful Life	8 years
Trademarks and Trade Names [Member]
Acquired Intangible Assets by Major Class [Line Items]
Acquired Indefinite-lived Intangible Asset, Amount	$ 13.8