FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain recognized in AOCL (effective portion)	$ 3	$ 3	$ 0
Designated as Hedging Instrument | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCL into income (effective portion)	6	1	1
Not Designated as Hedging Instrument | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain recognized in income	2	0	0
Not Designated as Hedging Instrument | Other Income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain recognized in income	$ 2	$ 0	$ 0