Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Future Amortization Expense 2015	$ 37.2
Future Amortization Expense 2016	34.7
Future Amortization Expense 2017	22.7
Future Amortization Expense 2018	12.8
Future Amortization Expense 2019	12.1
Finite-Lived Intangible Assets [Line Items]
Amortization Expense of Intangible Assets	29.4	26.8	23.4
Acquired Finite-Lived Intangible Assets related to Acquisitions	48.6	21.5
Gross Amount	340.9	306.6
Accumulated Amortization	(165.9)	(142.8)
Net Amount	175.0	163.8
Customer Lists
Finite-Lived Intangible Assets [Line Items]
Gross Amount	255.8	228.1
Accumulated Amortization	(139.3)	(119.8)
Net Amount	116.5	108.3
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross Amount	71.0	64.5
Accumulated Amortization	(22.8)	(19.2)
Net Amount	48.2	45.3
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Gross Amount	14.1	14.0
Accumulated Amortization	(3.8)	(3.8)
Net Amount	$ 10.3	$ 10.2
Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years