PROPERTY AND EQUIPMENT - Composition of our Property and Equipment Balances (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,205	$ 3,473
Accumulated depreciation	(1,301)	(1,517)
Property and equipment, net	1,904	1,956
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	684	591
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,100	1,275
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,225	1,439
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 196	$ 168

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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