Income Taxes (Schedule Of Statutory U.S. Federal Tax Rate To Reported Income Before Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2009
Income Taxes
Federal income tax, Amount	$ 55.9	[1]	$ 64.0	[1]	$ (132.6)	[1]
Federal income tax, % of Pretax Income	35.00%	[1]	35.00%	[1]	35.00%	[1]
State income tax, Amount	2.4	[2]	4.8	[2]	3.6	[2]
State income tax, % of Pretax Income	1.50%	[2]	2.60%	[2]	(0.90%)	[2]
Foreign income tax, Amount	(8.0)	[3]	(0.6)	[3]	(2.1)	[3]
Foreign income tax, % of Pretax Income	(5.00%)	[3]	(0.30%)	[3]	0.50%	[3]
Impairment of goodwill and other intangibles, Amount					163.3
Impairment of goodwill and other intangibles, % of Pretax Income					(43.10%)
Application of federal tax credits, Amount	(4.1)		(0.6)		(3.6)
Application of federal tax credits, % of Pretax Income	(2.50%)		(0.30%)		0.90%
Adjustment of estimated income tax accruals, Amount	2.3		(9.7)		0.2
Adjustment of estimated income tax accruals, % of Pretax Income	1.40%		(5.40%)
Valuation of tax attributes, Amount	(19.5)				(1.9)
Valuation of tax attributes, % of Pretax Income	(12.20%)				0.50%
Other, net, Amount	(2.8)		(1.0)		(0.7)
Other, net, % of Pretax Income	(1.80%)		(0.50%)		0.20%
Income tax expense, Amount	$ 26.2		$ 56.9		$ 26.2
Income tax expense, % of Pretax Income	16.40%		31.10%		(6.90%)

[1] At statutory rate.

[2] Net of Federal benefit.

[3] Federal tax rate differential.