Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Land	$ 536	$ 560
Buildings and land improvements	12,397	11,767
Machinery and equipment	13,187	12,867
Construction in progress	2,242	1,502
Gross property, plant and equipment	28,362	26,696
Less accumulated depreciation	(16,286)	(15,689)
Total	$ 12,076	$ 11,007