GOODWILL AND OTHER INTANGIBLE ASSETS - IDENTIFIABLE INTANGIBLE ASSETS (Details) $ in Millions	Mar. 31, 2019 USD ($)
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 31,174
Accumulated Amortization	(5,338)
Intangible Assets with Indefinite Lives
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,588
Accumulated Amortization	0
Intangible Assets with Determinable Lives
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,586
Accumulated Amortization	$ (5,338)