Information Relating to the Consolidated Statement of Cash Flows (Details Textual) - USD ($) shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014
Supplemental Cash Flow Elements [Abstract]
Reduction for income tax benefits associated with stock options exercised		$ 14	$ 55
Non-cash reduction to property, plant and equipment	$ 2,600	2,600
Net purchases of treasury shares		1	$ 3,800
Stock repurchased during period (in shares)	0.0		30.6
Stock repurchased during period		$ 3,700