Note 10 - Credit Facilities and Indebtedness (Tables)

6 Months Ended

Mar. 31, 2013

Schedule of Debt [Table Text Block]

	March 31, 2013			September 30, 2012
Credit facilities	$	120.0		$	140.0
3.25% Convertible Notes		850.0			850.0
7.5% Bonds		500.0			500.0
5.5% Bonds		300.0			300.0
Total principal debt obligations		1,770.0			1,790.0
Discounts:
3.25% Convertible Notes		(42.0	)		(60.0	)
7.5% Bonds		(1.9	)		(2.1	)
5.5% Bonds		(1.0	)		(1.0	)
Swap fair value adjustments:
7.5% Bonds		67.7			77.0
5.5% Bonds		36.5			42.5
Total outstanding debt, net	$	1,829.3		$	1,846.4

Convertible Debt Disclosure [Text Block]

	Periods Ended March 31,
	Quarters				Six Months
	2013		2012		2013		2012
Contractual interest expense	$	6.9	$	6.9	$	13.8	$	13.8
Discount amortization		9.1		8.3		18.0		16.4
Remaining discount amortization period (years)		1.1