Other Deductions, Net (Schedule Of Other Deductions, Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Other Deductions, Net [Abstract]
Amortization of intangibles	$ 59	$ 58
Rationalization of operations	16	23
Other	11	11
Gains, net	0	(2)
Total	$ 86	$ 90