Financial Instruments (Schedule Of Derivative Instruments) (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) to Earnings	$ (6,000,000)	$ 7,000,000	$ 1,000,000	$ 4,000,000
Gain (Loss) to OCI	(41,000,000)	(34,000,000)	(42,000,000)	57,000,000
Commodity Contract [Member] | Cash Flow Hedging [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) to OCI	(18,000,000)	(21,000,000)	(34,000,000)	29,000,000
Commodity Contract [Member] | Cash Flow Hedging [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified to Earnings	(6,000,000)	(9,000,000)	(10,000,000)	(31,000,000)
Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional value of foreign currency hedges	1,500,000,000		1,500,000,000
Foreign Exchange Contract [Member] | Other Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) to Earnings	(8,000,000)	17,000,000	(8,000,000)	32,000,000
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) to OCI	(23,000,000)	(13,000,000)	(8,000,000)	28,000,000
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Sales and Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified to Earnings	8,000,000	(1,000,000)	19,000,000	3,000,000
Copper and Aluminum [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Weight In Pounds of Copper and Aluminum Commodity Hedges	68,000,000		68,000,000
Amount of Copper and Aluminum Hedged	$ 198,000,000		$ 198,000,000