Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Income Taxes [Abstract]
Deferred Tax Assets, Valuation Allowance	$ 2.3		$ 2.3
Valuation Allowance, Deferred Tax Asset, Change in Amount			1.8
Taxable Income (Loss) from Continuing Operations before Income Taxes, Domestic			(22.2)	(21.2)	22.7
Deferred Tax Liability Not Recognized, Cumulative Amount of Temporary Difference	4.3
Deferred Tax Liabilities, Unrealized Gains on Trading Securities	1.3
Income Tax Expense (Benefit)	$ 1.5	$ 5.5
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	38.00%	29.00%