Earnings Per Share (Schedule Of Weighted-Average Number Of Shares Outstanding Used To Compute Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2016		Sep. 30, 2015		Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Net earnings	$ 2,279		$ 1,704		$ 3,264	$ 4,150
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	3		3		3	5
Net earnings available to common shareholders	$ 2,276		$ 1,701		$ 3,261	$ 4,145
Basic weighted average shares outstanding	625.5		681.3		641.2	692.9
Participating securities	0.9		1.2		1.0	1.1
Basic weighted average common shares outstanding	624.6		680.1		640.2	691.8
Basic weighted average shares outstanding	625.5		681.3		641.2	692.9
Dilutive potential common shares	7.2	[1]	7.7	[1]	6.7	8.0
Diluted weighted average shares outstanding	632.7		689.0		647.9	700.9
Participating securities	0.9		1.2		1.0	1.1
Diluted weighted average common shares outstanding	631.8		687.8		646.9	699.8
Income (Loss) from Continuing Operations, Per Basic Share	$ 3.64		$ 2.50		$ 5.09	$ 5.99
Income (Loss) from Continuing Operations, Per Diluted Share	$ 3.60		$ 2.47		$ 5.04	$ 5.92

[1] Diluted earnings per share includes any dilutive impact of stock options, restricted stock units, performance-based restricted stock units and performance awards.