PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment
Property, plant and equipment, gross	$ 16,245	$ 16,449
Less accumulated depreciation	8,013	8,246
Property, plant and equipment-net	8,232	8,203	$ 10,635
Land
Property, Plant and Equipment
Property, plant and equipment, gross	485	334
Buildings and improvements
Property, Plant and Equipment
Property, plant and equipment, gross	3,838	3,917
Machinery equipment and vehicle fleet
Property, Plant and Equipment
Property, plant and equipment, gross	$ 11,922	$ 12,198

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