Schedule II - Valuation And Qualifying Accounts (Schedule Of Valuation And Qualifying Accounts) (Details) - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2015	Sep. 30, 2014		Sep. 30, 2013
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		$ 60.0	$ 102.0		$ 104.0
Charged to Expense		8.0	8.0		9.0
Charged to Other Accounts		18.0	8.0		19.0
Other	[1]	(37.0)	(58.0)		(30.0)
Balance at End of Period		49.0	60.0		102.0
Allowance for deferred tax assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		104.0	45.0		37.0
Charged to Expense		0.0	58.0	[2]	8.0
Charged to Other Accounts		2.0	1.0		0.0
Other	[1]	(2.0)	0.0		0.0
Balance at End of Period		$ 104.0	$ 104.0		$ 45.0

[1] Primarily includes write-offs of uncollectible trade receivable accounts that were fully reserved prior to 2013. Other Changes also includes the 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.