INCOME TAXES - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Income Tax [Line Items]
Subsidiary, ownership percentage									100.00%
Undistributed earnings in foreign subsidiaries on which income taxes have not been provided									$ 599	$ 687
Tax (benefit) expense	$ (22)	$ (11)	$ (13)	$ (6)	$ 446	$ (8)	$ (7)	$ (7)	(52)	424	$ (1)
Research and development tax credits									3
Gross unrecognized tax benefits	269				243				269	243	207	$ 209
Unrecognized tax benefits that would impact effective tax rate	226								226
Interest on uncertain tax positions accrued	9				4				9	4
Penalties on uncertain tax positions accrued	1				2				1	2
Income tax penalties and interest expense									5	8
Restatement Adjustment
Income Tax [Line Items]
Tax (benefit) expense									$ 11	$ 61
U.S.
Income Tax [Line Items]
Non-cash expense (benefit) for the reversal of valuation allowances	(52)				(438)
Tax (benefit) expense	$ 15				25
Italy, Mexico, Sweden and Germany
Income Tax [Line Items]
Non-cash expense (benefit) for the reversal of valuation allowances											$ (16)
Brazil
Income Tax [Line Items]
Non-cash expense (benefit) for the reversal of valuation allowances					9
Tax (benefit) expense					$ (9)