Earnings Per Share (Schedule Of Weighted-Average Number Of Shares Outstanding Used To Compute Earnings Per Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net earnings	$ 1,336	$ 965
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	2	2
Net earnings available to common shareholders	$ 1,334	$ 963
Basic weighted average shares outstanding	705.7	745.0
Participating securities	1.1	1.6
Basic weighted average common shares outstanding	704.6	743.4
Basic weighted average shares outstanding	705.7	745.0
Dilutive potential common shares	8.5	9.1
Diluted weighted average shares outstanding	714.2	754.1
Participating securities	1.1	1.6
Diluted weighted average common shares outstanding	713.1	752.5
Net earnings per share, Basic	$ 1.89	$ 1.30
Net earnings per share, Diluted	$ 1.87	$ 1.28