GOODWILL AND OTHER INTANGIBLES (Other Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Sep. 30, 2016
Intangible Assets, Net [Abstract]
Intangible Assets, Gross (Excluding Goodwill)	$ 1,545		$ 1,545		$ 1,556
Intangibles	1,017		1,017		1,064
Finite-Lived Intangible Assets, Net [Abstract]
Gross carrying amount	1,244		1,244		1,255
Accumulated amortization	(528)		(528)		(492)
Net carrying amount	716		716		763
Amortization expense recognized on intangible assets	19	$ 19	38	$ 38
Expected future amortization expense [Abstract]
2017 (includes six months actual and six months estimated)	77		77
2018	76		76
2019	71		71
2020	70		70
2021	70		70
Trademarks and Trade Names [Member]
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Indefinite-lived intangible assets (excluding goodwill)	301		301		301
Trademarks and Trade Names [Member]
Intangible Assets, Net [Abstract]
Finite-lived Intangible Assets Acquired			1
Finite-Lived Intangible Assets, Net [Abstract]
Gross carrying amount	43		43		42
Accumulated amortization	(20)		(20)		(19)
Net carrying amount	23		23		23
Intellectual Property [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Gross carrying amount	663		663		667
Accumulated amortization	(297)		(297)		(273)
Net carrying amount	366		366		394
Customer Relationships [Member]
Intangible Assets, Net [Abstract]
Finite-lived Intangible Assets Acquired			2
Finite-Lived Intangible Assets, Net [Abstract]
Gross carrying amount	538		538		546
Accumulated amortization	(211)		(211)		(200)
Net carrying amount	$ 327		$ 327		$ 346
Minimum [Member] | Trademarks and Trade Names [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)			3 years
Minimum [Member] | Intellectual Property [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)			5 years
Minimum [Member] | Customer Relationships [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)			3 years
Maximum [Member] | Trademarks and Trade Names [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)			25 years
Maximum [Member] | Intellectual Property [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)			20 years
Maximum [Member] | Customer Relationships [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)			24 years