Income Taxes (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Income Tax Reconciliation, Income Tax Expense (Benefit), at U.S. Statutory Income Tax Rate	$ 4.5	$ (25.3)	$ (27.5)
Income Tax Reconciliation, State and Local Income Taxes	(0.1)	0.1	0.1
Income Tax Reconciliation, Foreign Income Tax Rate Differential	0.2	0.4	(0.1)
Income Tax Reconciliation, Valuation Allowance	(88.7)	25.7	9.9
Income Tax Reconciliation, Capital loss expiration	68.5	0	0
Intraperiod Allocation	(4.8)	0	3.9
Income Tax Reconciliation, Release of uncertain tax positions	(4.5)	0	0
Income Tax Reconciliation, Tax Refunds	(1.0)	(1.7)	(1.2)
Income Tax Reconciliation, Deemed foreign dividend	15.7	0	0
Income Tax Reconciliation, Other Adjustments	0	(0.1)	(1.7)
Income Tax Expense (Benefit)	$ (10.2)	$ (0.9)	$ (16.6)