Income Taxes (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	12 Months Ended
	Nov. 13, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Change in valuation allownce		$ (10.8)
Deferred Tax Assets, Operating Loss Carryforwards, Domestic		10.4
Deferred Tax Assets, Operating Loss Carryforwards, Foreign		115.5
Operating Loss Carryforwards		65.2
Unrecognized Tax Benefits		109.2	111.5	116.4	83.8
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		80.8	79.2
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense		(0.4)	2.4	(2.0)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued		18.6	19.0
Expected reduction in tax provision	27.0
Unrecognized tax benefits, period increase (decrease)	(31.0)
Unrecognized Temporary Differences [Member]
Unrecognized Tax Benefits		$ 202.4