Financial Instruments (Schedule of Gain/Loss Related to Derivative Instruments) (Details) (USD $) In Millions	3 Months Ended				9 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Forward Exchange Contracts [Member] | Cash Flow Hedges [Member]
Net (gain) loss recognized in OCI (effective portion)	$ (6.1)		$ 16.0		$ (8.5)		$ 25.1
Net gain (loss) reclassified from OCI to sales/cost of sales (effective portion)	(1.3)		(0.7)		(7.4)		(5.6)
Net gain (loss) reclassified from OCI to other (income) expense (effective portion)	6.7		(15.1)		7.5		(19.8)
Net gain (loss) reclassified from OCI to other (income) expense (ineffective portion)	(0.5)		0.1		(0.6)		(0.1)
Foreign Currency Debt [Member] | Cash Flow Hedges [Member]
Net (gain) loss recognized in OCI (effective portion)
Net gain (loss) reclassified from OCI to sales/cost of sales (effective portion)
Net gain (loss) reclassified from OCI to other (income) expense (effective portion)
Net gain (loss) reclassified from OCI to other (income) expense (ineffective portion)
Other Contracts [Member] | Cash Flow Hedges [Member]
Net (gain) loss recognized in OCI (effective portion)	0.8			[1]	0.8		0.2	[1]
Net gain (loss) reclassified from OCI to sales/cost of sales (effective portion)				[1]			2.0	[1]
Net gain (loss) reclassified from OCI to other (income) expense (effective portion)				[1]				[1]
Net gain (loss) reclassified from OCI to other (income) expense (ineffective portion)				[1]				[1]
Cash Flow Hedges [Member]
Net (gain) loss recognized in OCI (effective portion)	(5.3)		16.0		(7.7)		25.3
Net gain (loss) reclassified from OCI to sales/cost of sales (effective portion)	(1.3)		(0.7)		(7.4)		(3.6)
Net gain (loss) reclassified from OCI to other (income) expense (effective portion)	6.7		(15.1)		7.5		(19.8)
Net gain (loss) reclassified from OCI to other (income) expense (ineffective portion)	(0.5)		0.1		(0.6)		(0.1)
Forward Exchange Contracts [Member] | Net Investment Hedges [Member]
Net (gain) loss recognized in OCI	8.0		(53.7)		22.3		(89.3)
Foreign Currency Debt [Member] | Net Investment Hedges [Member]
Net (gain) loss recognized in OCI	30.5		(117.0)		84.6		(236.0)
Other Contracts [Member] | Net Investment Hedges [Member]
Net (gain) loss recognized in OCI	0.2		(0.4)	[1]	0.5		(1.3)	[1]
Net Investment Hedges [Member]
Net (gain) loss recognized in OCI	38.7		(171.1)		107.4		(326.6)
Forward Exchange Contracts [Member] | Hedges Not Designated [Member]
Net (gain) loss recognized in other (income) expense	1.4	[2]	(0.4)	[2]	2.1	[2]	(3.9)	[2]
Foreign Currency Debt [Member] | Hedges Not Designated [Member]
Net (gain) loss recognized in other (income) expense		[2]		[2]		[2]		[2]
Other Contracts [Member] | Hedges Not Designated [Member]
Net (gain) loss recognized in other (income) expense		[2]		[1],[2]		[2]		[1],[2]
Hedges Not Designated [Member]
Net (gain) loss recognized in other (income) expense	1.4	[2]	(0.4)	[2]	2.1	[2]	(3.9)	[2]
Forward Exchange Contracts [Member] | Fair Value Hedges [Member]
Net (gain) loss recognized in other (income) expense	0	[3]			0	[3]
Foreign Currency Debt [Member] | Fair Value Hedges [Member]
Net (gain) loss recognized in other (income) expense		[3]		[3]		[3]		[3]
Other Contracts [Member] | Fair Value Hedges [Member]
Net (gain) loss recognized in other (income) expense	(8.4)	[3]	(10.8)	[1],[3]	12.8	[3]	(10.9)	[1],[3]
Fair Value Hedges [Member]
Net (gain) loss recognized in other (income) expense	$ (8.4)	[3]	$ (10.8)	[3]	$ 12.8	[3]	$ (10.9)	[3]

[1] Other includes the impact on other comprehensive income (OCI) and earnings 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 the 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.