Income Taxes (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	12 Months Ended
	Nov. 13, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Change in valuation allownce		$ (1.2)
Deferred Tax Assets, Operating Loss Carryforwards, Domestic		7.7
Deferred Tax Assets, Operating Loss Carryforwards, Foreign		120.5
Operating Loss Carryforwards		63.1
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		36.1	80.8
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense		(10.6)	(0.4)	2.4
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued		8.0	18.6
Expected reduction in tax provision	29.6
Unrecognized tax benefits, period increase (decrease)	(33.1)
Unrecognized Temporary Differences [Member]
Unrecognized Tax Benefits		$ 200.8