Financial Instruments (Schedule Of Gain/Loss Related To Derivative Instruments) (Details) (USD $) In Millions	12 Months Ended
	Sep. 30, 2011		Sep. 30, 2010
Forward Exchange Contracts [Member] | Cash Flow Hedges [Member]
Net gain (loss) recognized in OCI (effective portion)	$ 6.4		$ (11.3)
Net (gain) loss reclassified from OCI to sales/cost of sales (effective portion)	8.4		9.6
Net loss reclassified from OCI to other income (effective portion)	1.2		6.2
Net (gain) loss reclassified from OCI to other income (ineffective portion)	0.7		(0.2)
Other Contracts [Member] | Cash Flow Hedges [Member]
Net gain (loss) recognized in OCI (effective portion)	(5.6)	[1]	(0.3)	[1]
Net (gain) loss reclassified from OCI to sales/cost of sales (effective portion)			(2.0)	[1]
Net loss reclassified from OCI to interest expense (effective portion)	1.2	[1]	1.2	[1]
Cash Flow Hedges [Member]
Net gain (loss) recognized in OCI (effective portion)	0.8		(11.6)
Net (gain) loss reclassified from OCI to sales/cost of sales (effective portion)	8.4		7.6
Net loss reclassified from OCI to other income (effective portion)	1.2		6.2
Net loss reclassified from OCI to interest expense (effective portion)	1.2		1.2
Net (gain) loss reclassified from OCI to other income (ineffective portion)	0.7		(0.2)
Forward Exchange Contracts [Member] | Net Investment Hedges [Member]
Net gain recognized in OCI	5.7		58.4
Foreign Currency Debt [Member] | Net Investment Hedges [Member]
Net gain recognized in OCI	16.9		109.8
Other Contracts [Member] | Net Investment Hedges [Member]
Net gain recognized in OCI			0.4	[1]
Net Investment Hedges [Member]
Net gain recognized in OCI	22.6		168.6
Forward Exchange Contracts [Member] | Not Designated [Member]
Net (loss) recognized in other income	(5.8)	[2]	(24.7)	[2]
Not Designated [Member]
Net (loss) recognized in other income	(5.8)	[2]	(24.7)	[2]
Other Contracts [Member] | Fair Value Hedges [Member]
Net gain recognized in interest expense	9.4	[1],[3]	19.7	[1],[3]
Fair Value Hedges [Member]
Net gain recognized in interest expense	$ 9.4	[3]	$ 19.7	[3]

[1] Other includes the impact on other comprehensive income (OCI) and earnings primarily related to interest rate swaps.

[2] The impact of the non-designated hedges noted above was largely offset by gains and losses, respectively, resulting from the impact of changes in exchange rates on recognized assets and liabilities denominated in nonfunctional currencies.

[3] The impact of fair value hedges noted above was largely offset by gains and losses resulting from the impact of changes in related interest rates on recognized outstanding debt.