Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate			35.00%	35.00%
Continuing operations	$ 4.4	$ 7.7	$ 51.6	$ (5.6)
Discontinued operations	0.4	0.2	0.6	1.0
Total tax benefit	4.8	7.9	52.2	(4.6)
Continuing operations effective tax rate	11.00%	20.00%	21.00%	23.00%
Discontinued operation effective tax rate	35.00%	35.00%	35.00%	35.00%
Total effective tax rate	11.00%	20.00%	21.00%	21.00%
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	13.5		13.5
Payment of long-term deposit	$ (17.1)