SCHEDULE II—Valuation and Qualifying Accounts and Reserves (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, Beginning of Year	$ 26.8		$ 20.7		$ 20.3
Provision/(Benefit) Charged to Costs and Expenses	5.7		8.8		3.9
Provision/(Benefit) Charged to Other Comprehensive Income	0		0		0
Write-offs	(2.3)	[1]	(2.7)	[1]	(3.5)	[1]
Balance, End of Year	30.2		26.8		20.7
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, Beginning of Year	84.5		92.6		76.3
Provision/(Benefit) Charged to Costs and Expenses	23.1		(8.1)		16.3
Provision/(Benefit) Charged to Other Comprehensive Income	0.6		0		0
Write-offs	0	[1]	0	[1]	0	[1]
Balance, End of Year	$ 108.2		$ 84.5		$ 92.6

[1] Write-offs are net of recoveries.