Basis of Presentation and Accounting Policies (Details) (USD $) In Millions, except Per Share data	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Sep. 30, 2010
Reconciled Basic and Diluted EPS
Income from continuing operations	$ 178.8	$ 119.4	$ 495.3	$ 309.1
Less: Allocation to participating securities	(0.3)	(0.3)	(1.0)	(0.7)
Income from continuing operations available to common shareowners	178.5	119.1	494.3	308.4
Income from discontinued operations	0.7		0.7	23.9
Less: Allocation to participating securities				(0.1)
Income from discontinued operations available to common shareowners	0.7		0.7	23.8
Net income	179.5	119.4	496.0	333.0
Less: Allocation to participating securities	(0.3)	(0.3)	(1.0)	(0.8)
Net income available to common shareowners	179.2	119.1	495.0	332.2
Basic weighted average outstanding shares	143.4	142.0	142.8	142.1
Effect of dilutive securities
Stock options	2.1	1.9	2.3	1.7
Performance shares	0.4	0.4	0.4	0.3
Diluted weighted average outstanding shares	145.9	144.3	145.5	144.1
Basic earnings per share:
Continuing operations	$ 1.24	$ 0.84	$ 3.46	$ 2.17
Discontinued operations	$ 0.01		$ 0.01	$ 0.17
Net income	$ 1.25	$ 0.84	$ 3.47	$ 2.34
Diluted earnings per share:
Continuing operations	$ 1.22	$ 0.83	$ 3.40	$ 2.14
Discontinued operations	$ 0.01			$ 0.17
Net income	$ 1.23	$ 0.83	$ 3.40	$ 2.31
Basis of Presentation and Accounting Policies (Textuals) [Abstract]
Allowances for doubtful accounts	23.8		23.8		17.9
Allowance for certain customer returns, rebates and incentives	$ 8.6		$ 8.6		$ 16.4
Antidilutive share-based compensation awards	1.1	3.7	1.9	5.0