Acquisitions (Allocation Of Acquisition Costs) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Acquisitions [Abstract]
Cash	$ 186
Contingent consideration	19	16
Total Consideration	205	132
Allocation of purchase price:
Cash and cash equivalents	22
Accounts receivable, net	5
Property, plant, and equipment	3
Intangible assets	96	2
Goodwill	126
Other assets	3
Total assets acquired	255
Current liabilities	11
Other Liabilities	39
Total liabilities assumed	50	19
Net assets acquired	$ 205