Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Income Taxes [Abstract]
Deferred Tax Assets, Valuation Allowance	$ 2.3		$ 2.3		$ 0
Income (Loss) from Continuing Operations before Income Taxes, Domestic					(22.2)	(21.2)	22.7
Deferred Tax Liabilities, Gross	4.3		4.3
Deferred Tax Liabilities, Unrealized Gains on Trading Securities	1.3		1.3
Income Tax Expense (Benefit)	$ 0.3	$ 2.0	$ 4.4	$ 5.9
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	8.00%	28.00%	24.00%	26.00%