PROPERTY AND EQUIPMENT, NET - Property and Equipment Balances (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 5,947	$ 5,494
Accumulated depreciation	(2,874)	(3,123)
Property and equipment, net	3,073	2,371
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17	19
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,126	952
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,148	1,009
Computer software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,656	$ 3,514