Financial Instruments (Schedule Of Derivative Instruments) (Details) (USD $)	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Notional value of foreign currency hedges	$ 2,200,000,000
Gain (Loss) to Earnings	10,000,000	(4,000,000)
Gain (Loss) to OCI	(3,000,000)	32,000,000
Copper and Aluminum [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Weight In Pounds of Copper and Aluminum Commodity Hedges	64,000,000
Amount of Copper and Aluminum Hedged	186,000,000
Commodity Derivatives Receiving Deferral Accounting - Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified to Earnings	(3,000,000)	(11,000,000)
Gain (Loss) to OCI	(5,000,000)	21,000,000
Foreign Currency Derivatives Receiving Deferral Accounting - Sales and Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified to Earnings	4,000,000	0
Gain (Loss) to OCI	2,000,000	11,000,000
Foreign Currency Derivatives Not Receiving Deferral Accounting - Other Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) to Earnings	$ 9,000,000	$ 7,000,000