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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net earnings		$ 2,363	$ 1,810	$ 7,036	$ 5,138
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic		2	2	5	4
Net earnings available to common shareholders		$ 2,361	$ 1,808	$ 7,031	$ 5,134
Basic weighted average shares outstanding		574.8	598.3	582.7	605.6
Participating securities		0.6	0.7	0.7	0.8
Basic weighted average common shares outstanding		574.2	597.6	582.0	604.8
Basic weighted average shares outstanding		574.8	598.3	582.7	605.6
Dilutive potential common shares	[1]	6.0	8.0	6.2	7.2
Diluted weighted average shares outstanding		580.8	606.3	588.9	612.8
Participating securities		0.6	0.7	0.7	0.8
Diluted weighted average common shares outstanding		580.2	605.6	588.2	612.0
Income (Loss) from Continuing Operations, Per Basic Share		$ 4.11		$ 12.08	$ 8.49
Earnings Per Share, Basic		4.11	$ 3.03	12.08	8.49
Income (Loss) from Continuing Operations, Per Diluted Share		$ 4.07	$ 2.99	$ 11.95	$ 8.39

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