Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of Period	$ 12.2	$ 13.3	$ 11.6
Charge (Benefit) to Expenses	10.4	11.3	13.9
To (from) Other Accounts	0	0	0
Deductions	10.2	12.4	12.2
End of Period	12.4	12.2	13.3
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of Period	68.3	56.8	58.4
Charge (Benefit) to Expenses	(1.1)	14.1	(1.7)
To (from) Other Accounts	(2.8)	(2.6)	0.1
Deductions	0	0	0
End of Period	$ 64.4	$ 68.3	$ 56.8