Property, Plant and Equipment, Net of Accumulated Depreciation (Property, Plant and Equipment, Net of Accumulated Depreciation) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Property, plant and equipment	$ 26,827	$ 24,826
Accumulated depreciation	(11,932)	(10,809)
Total	14,895	14,017
Land [Member]
Property, plant and equipment	467	482
Building [Member]
Property, plant and equipment	5,924	5,864
Equipment [Member]
Property, plant and equipment	18,218	16,648
Construction in Progress [Member]
Property, plant and equipment	$ 2,218	$ 1,832

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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