Other Intangible Assets (Schedule of Other Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Acquisition Costs, Total	$ 102.4	$ 103.6
Accumulated Amortization	17.2	15.5
Net, Total	85.2	88.1
Indefinite-lived tradenames [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Acquisition Costs, Indefinite-lived	14.0	14.0
Non-contractual customer relationships [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted Average Useful Life	11 years 6 months
Acquisition Costs, Finite-lived	76.2	77.3
Accumulated Amortization	14.7	13.2
Net, Finite-lived	61.5	64.1
Other [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted Average Useful Life	17 years 7 months 6 days
Acquisition Costs, Finite-lived	12.2	12.3
Accumulated Amortization	2.5	2.3
Net, Finite-lived	$ 9.7	$ 10.0