Note 21 - Discontinued Operations (Detail) - Summary of Results in Discontinued Operations (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Revenues		$ 60.0	$ 79.7
Income (loss) before tax		6.1	(27.4)
Income tax provision		2.2	3.4
Income (loss) from discontinued operations, net of tax		3.9	(30.8)
Loss on divestiture before tax	(2.4)	(22.6)	(2.8)
Income tax provision (benefit)	1.4	(10.0)
Loss on divestiture, net of tax	(3.8)	(12.6)	(2.8)
Loss from discontinued operations, net of tax	$ (3.8)	$ (8.7)	$ (33.6)