Property, Plant and Equipment - Schedule of Property, Plant and Equipment by Component (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment
Land	$ 263	$ 286
Buildings and improvements	2,624	2,718
Machinery, equipment and other	11,184	14,274
Subtotal	14,071	17,278
Less: Accumulated depreciation	7,378	8,215
Total property, plant and equipment	$ 6,693	$ 9,063	$ 9,076
Minimum | Buildings and improvements
Property, Plant and Equipment Useful Life
Useful life of property, plant and equipment	5 years
Minimum | Machinery, equipment and other
Property, Plant and Equipment Useful Life
Useful life of property, plant and equipment	1 year
Maximum | Buildings and improvements
Property, Plant and Equipment Useful Life
Useful life of property, plant and equipment	30 years
Maximum | Machinery, equipment and other
Property, Plant and Equipment Useful Life
Useful life of property, plant and equipment	20 years