GOODWILL AND OTHER INTANGIBLE ASSETS - IDENTIFIABLE INTANGIBLE ASSETS (Details) $ in Millions	Sep. 30, 2018 USD ($)
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 29,103
Accumulated Amortization	(5,184)
Intangible Assets with Indefinite Lives
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,683
Accumulated Amortization	0
Intangible Assets with Determinable Lives
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,420
Accumulated Amortization	$ (5,184)