Share-Based Compensation Plans and Other Incentive Plans (Schedule of Compensation Expense) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense included in Operating earnings	$ 78	$ 94	$ 120
Tax benefit	24	30	37
Share-based compensation expense, net of tax	$ 54	$ 64	$ 83
Decrease in basic earnings per share	$ (0.25)	$ (0.28)	$ (0.31)
Decrease in diluted earnings per share	$ (0.25)	$ (0.28)	$ (0.31)
Share-based compensation expense in discontinued operations	$ 0	$ 20	$ 33
Costs of sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense included in Operating earnings	9	10	16
Selling, general and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense included in Operating earnings	52	61	73
Research and development expenditures
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense included in Operating earnings	$ 17	$ 23	$ 31