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Note 16 - Discontinued Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 31, 2012	Mar. 31, 2012	Sep. 30, 2011
Long Lived Assets Held-for-sale, Proceeds from Sale			$ 47.0
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	0.8	2.4
Discontinued Operation, Provision for Loss (Gain) on Disposal, Net of Tax	$ 0.5	$ 1.5

Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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- Definition

Provision recognizing a loss (after tax benefit) for initial, or subsequent, write-down to fair value (less cost to sell) of a disposal group that is classified as a component of the entity, which remains unsold as of the reporting date. May include the recognition of a (gain) (net of tax expense) for a subsequent increase in fair value (less cost to sell), but not in excess of the cumulative loss previously recognized through write-downs.

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