Disclosures About Derivative Instruments and Hedging Activities (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Derivatives Not Designated as Hedging Instruments [Member]
Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 1.6	$ 3.5
Cash Flow Hedges [Member]
Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest
Gain (loss) recognized in AOCI and noncontrolling interests	(13.5)	(64.9)
Gain (loss) reclassified from AOCI and noncontrolling interest into income	(28.3)	(20.5)
Commodity Contracts [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Cost of Sales [Member]
Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	1.6	3.1
Commodity Contracts [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Operating Expenses/Other Income [Member]
Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	0	(0.1)
Commodity Contracts [Member] | Cash Flow Hedges [Member] | Cost of Sales [Member]
Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest
Gain (loss) recognized in AOCI and noncontrolling interests	(10.8)	(57.2)
Gain (loss) reclassified from AOCI and noncontrolling interest into income	(25.3)	(19.5)
Foreign Currency Contracts [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Other Income [Member]
Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	0	0.5
Foreign Currency Contracts [Member] | Cash Flow Hedges [Member] | Cost of Sales [Member]
Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest
Gain (loss) recognized in AOCI and noncontrolling interests	(3.7)	1.9
Gain (loss) reclassified from AOCI and noncontrolling interest into income	0.5	0.9
Foreign Currency Contracts [Member] | Net Investment Hedges [Member]
Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest
Gain (loss) recognized in AOCI and noncontrolling interests	0	0.5
Interest Rate Contracts [Member] | Cash Flow Hedges [Member] | Interest Expense/Other Income [Member]
Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest
Gain (loss) recognized in AOCI and noncontrolling interests	1.0	(9.6)
Gain (loss) reclassified from AOCI and noncontrolling interest into income	$ (3.5)	$ (1.9)