Acquisition (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jul. 02, 2013
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 72.6
Business Combination, Consideration Transferred, Liabilities Incurred	10.3
Payments to Acquire Businesses, Net of Cash Acquired	56.3	19.1
Goodwill, Acquired During Period	43.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			108.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			35.4
Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	8.3
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years
Contractual Rights [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	4.4
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	43 years
Other Intangible Assets [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	0.4
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	2 years
NCS [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	62.3
Goodwill, Acquired During Period	$ 44.4