Note 17 - Earnings Per Share (Detail) - Earnings Per Share (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Income from continuing operations available to common shares (in Dollars)	$ 249.7	$ 292.3	$ 219.6
Basic weighted average shares outstanding	288.8	298.2	296.3
Dilutive effect of non-participating share-based awards	1.6	1.6	1.5
Diluted weighted average common shares outstanding	290.4	299.8	297.8
Basic EPS from continuing operations (in Dollars per share)	$ 0.86	$ 0.98	$ 0.73
Diluted EPS from continuing operations (in Dollars per share)	$ 0.86	$ 0.97	$ 0.73
Share Based Awards [Member]
Weighted average shares excluded from diluted EPS	11.3	14.7	12.3
Notes [Member]
Weighted average shares excluded from diluted EPS	42.6	42.6	42.6
Note Hedges [Member]
Weighted average shares excluded from diluted EPS	(42.6)	(42.6)	(42.6)
Warrant [Member]
Weighted average shares excluded from diluted EPS	42.6	42.6	42.6