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
		Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net earnings		$ 2,477	$ 1,579
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic		3	2
Net earnings available to common shareholders		$ 2,474	$ 1,577
Basic weighted average shares outstanding		590.8	614.4
Participating securities		0.7	0.8
Basic weighted average common shares outstanding		590.1	613.6
Basic weighted average shares outstanding		590.8	614.4
Dilutive potential common shares	[1]	6.4	6.8
Diluted weighted average shares outstanding		597.2	621.2
Participating securities		0.7	0.8
Diluted weighted average common shares outstanding		596.5	620.4
Income (Loss) from Continuing Operations, Per Basic Share		$ 4.19	$ 2.57
Income (Loss) from Continuing Operations, Per Diluted Share		$ 4.15	$ 2.54

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