INTANGIBLE ASSETS AND GOODWILL - Composition of Acquired Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Definite-lived Intangible Assets, gross	$ 3,330	$ 3,189
Accumulated amortization	(674)	(499)
Definite-lived Intangible Assets, net	2,656	2,690
Acquired Indefinite-lived Intangible Assets [Line Items]
Total Intangible Assets	8,380	8,544
Indefinite-lived Intangible Brand Assets
Acquired Indefinite-lived Intangible Assets [Line Items]
Brands	5,724	5,854
Costs incurred to obtain contracts with customers
Acquired Finite-Lived Intangible Assets [Line Items]
Definite-lived Intangible Assets, gross	1,347	1,137
Contracts acquired in business combinations and other
Acquired Finite-Lived Intangible Assets [Line Items]
Definite-lived Intangible Assets, gross	$ 1,983	$ 2,052