Note 10 - Credit Facilities and Indebtedness (Detail) - Convertible Debt (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended	21 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2012
Contractual interest expense	$ 6.9	$ 6.9	$ 20.7	$ 20.7
Discount amortization	$ 8.5	$ 7.7	$ 24.9	$ 22.8
Remaining discount amortization period	1 year 328 days