FINANCIAL INSTRUMENTS (Details 3) - USD ($) $ in Millions	Sep. 30, 2015	Sep. 30, 2014
Level 1
Derivatives, Fair Value [Line Items]
Cash and cash equivalents	$ 193	$ 247
Short-term debt	0	0
Long-term debt	0	0
Level 2
Derivatives, Fair Value [Line Items]
Cash and cash equivalents	0	0
Short-term debt	0	0
Long-term debt	1,102	1,093
Level 3
Derivatives, Fair Value [Line Items]
Cash and cash equivalents	0	0
Short-term debt	15	7
Long-term debt	21	50
Foreign Exchange Forward | Level 1
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts (asset)	0	0
Foreign exchange forward contracts (liability)	0
Foreign Exchange Forward | Level 2
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts (asset)	1	2
Foreign exchange forward contracts (liability)	3
Foreign Exchange Forward | Level 3
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts (asset)	0	0
Foreign exchange forward contracts (liability)	0
Foreign Currency Option Contracts | Level 1
Derivatives, Fair Value [Line Items]
Short-term foreign currency option contracts (asset)	0	0
Long-term foreign currency option contracts (asset)	0	0
Foreign Currency Option Contracts | Level 2
Derivatives, Fair Value [Line Items]
Short-term foreign currency option contracts (asset)	0	0
Long-term foreign currency option contracts (asset)	0	0
Foreign Currency Option Contracts | Level 3
Derivatives, Fair Value [Line Items]
Short-term foreign currency option contracts (asset)	1	2
Long-term foreign currency option contracts (asset)	$ 1	$ 1