Income Taxes Current and Deferred Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Income Tax Disclosure [Abstract]
Current Federal Tax Expense (Benefit)	$ (5.7)	$ 9.1	$ 0
Current State and Local Tax Expense (Benefit)	0.5	1.7	0.4
Current Foreign Tax Expense (Benefit)	10.1	9.9	4.8
Current Income Tax Expense (Benefit)	4.9	20.7	5.2
Deferred Income Tax Expense (Benefit)	(0.5)	1.8	1.2
Income Tax Expense (Benefit), Continuing Operations	$ 4.4	$ 22.5	$ 6.4