RETIREMENT PENSION PLANS - Schedule of Balance Sheet Classification of Net Pension Liability (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Retirement benefits-non-current	$ (314)	$ (703)
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Non-current assets	135	123
Current liabilities	(5)	(6)
Retirement benefits-non-current	(214)	(277)
Net amount recognized	(84)	(160)
U.S. Plans | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Non-current assets	0	0
Current liabilities	(5)	(6)
Retirement benefits-non-current	(210)	(272)
Net amount recognized	(215)	(278)
Non-U.S. Plans | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Non-current assets	135	123
Current liabilities	0	0
Retirement benefits-non-current	(4)	(5)
Net amount recognized	$ 131	$ 118