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				6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net earnings/(loss)	$ (234)		$ 1,110		$ 985	$ 2,446
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic						2
Net earnings available to common shareholders	$ (234)		$ 1,110		$ 985	$ 2,444
Basic weighted average shares outstanding	636.3		691.2		648.5	698.5
Participating securities	1.0		1.1		1.0	1.1
Basic weighted average common shares outstanding	635.3		690.1		647.5	697.4
Basic weighted average shares outstanding	636.3		691.2		648.5	698.5
Dilutive potential common shares		[1]	7.7	[1]	6.4	8.1
Diluted weighted average shares outstanding	636.3		698.9		654.9	706.6
Participating securities	1.0		1.1		1.0	1.1
Diluted weighted average common shares outstanding	635.3		697.8		653.9	705.5
Income (Loss) from Continuing Operations, Per Basic Share	$ (0.37)		$ 1.61		$ 1.52	$ 3.50
Income (Loss) from Continuing Operations, Per Diluted Share	$ (0.37)		$ 1.59		$ 1.51	$ 3.46

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