Note 14 - Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Income Taxes Receivable	$ 86.8	$ 62.1
Increase (Decrease) in Deferred Income Taxes	19.1
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	12.7
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	134.8
Operating Loss Carryforwards	70.1
Unrecognized Tax Benefits	111.5	116.4	83.8	91.5
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	79.2	72.7
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	2.4	2.0	15.1
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	23.4	20.1
Unrecognized Tax Benefits, Period Increase (Decrease)	(4.9)	32.6
Unrecognized Temporary Differences [Member]
Unrecognized Tax Benefits	$ 204.2