Schedule II - Valuation And Qualifying Accounts (Schedule Of Valuation And Qualifying Accounts) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 102		$ 104		$ 78
Charged to Expense	8		9		21
Charged to Other Accounts	8		19		16
Other	(58)	[1]	(30)	[1]	(11)	[1]
Balance at End of Period	60		102		104
Allowance for deferred tax assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	45		37		28
Charged to Expense	58	[2]	8		9
Charged to Other Accounts	1		0		0
Other	0	[1]	0	[1]	0	[1]
Balance at End of Period	$ 104		$ 45		$ 37

[1] Primarily write-offs of uncollectible trade receivable accounts. Includes impact of foreign currency translation adjustments.

[2] The increase in the valuation allowance was primarily due to the capital loss generated from the tax election related to a non-U.S. subsidiary.