Financial Instruments (Hedging Activities) (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Gain/(Loss) Recognized in Earnings	$ 34,000,000	$ 66,000,000	$ 85,000,000	$ 155,000,000
Gain/(Loss) Recognized in Other Comprehensive Income	3,000,000	(19,000,000)	48,000,000	50,000,000
Notional value of foreign currency hedges	1,300,000,000		1,300,000,000
Weight of copper and aluminum for commodity hedges, in pounds	70,000,000		70,000,000
Foreign Currency Derivatives - Sales [Member]
Gain/(Loss) Reclassified into Earnings	2,000,000	(2,000,000)	8,000,000	(6,000,000)
Gain/(Loss) Recognized in Other Comprehensive Income	0	6,000,000	6,000,000	5,000,000
Foreign Currency Derivatives - Cost of Sales [Member]
Gain/(Loss) Reclassified into Earnings	6,000,000	3,000,000	16,000,000	2,000,000
Gain/(Loss) Recognized in Other Comprehensive Income	5,000,000	8,000,000	15,000,000	37,000,000
Commodity Derivatives - Cost of Sales [Member]
Gain/(Loss) Reclassified into Earnings	19,000,000	17,000,000	48,000,000	38,000,000
Gain/(Loss) Recognized in Other Comprehensive Income	(2,000,000)	(33,000,000)	27,000,000	8,000,000
Foreign Currency Derivatives Not Receiving Deferral Accounting - Other Deductions, Net [Member]
Gain/(Loss) Recognized in Earnings	8,000,000	50,000,000	14,000,000	122,000,000
Commodity Derivatives Not Receiving Deferral Accounting - Cost of Sales [Member]
Gain/(Loss) Recognized in Earnings	$ (1,000,000)	$ (2,000,000)	$ (1,000,000)	$ (1,000,000)