Net Earnings Per Share From Continuing Operations (Components Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net earnings from continuing operations	$ 3,646	$ 2,432	$ 2,406
Mandatory convertible preferred stock dividends	(136)	(68)	0
Net earnings from continuing operations attributable to common stockholders for Basic EPS	3,510	2,364	2,406
Adjustment for interest on convertible debentures	1	2	2
Net earnings from continuing operations attributable to common stockholders after assumed conversions for Diluted EPS	$ 3,511	$ 2,366	$ 2,408
Denominator:
Weighted average common shares outstanding used in Basic EPS	706.2	715.0	700.6
Assumed exercise of dilutive options and vesting of dilutive RSUs and PSUs	11.4	8.9	7.2
Assumed conversion of the convertible debentures	1.1	1.6	2.4
Weighted average common shares outstanding used in Diluted EPS	718.7	725.5	710.2
Net earnings per share from continuing operations, basic	$ 4.97	$ 3.31	$ 3.43
Net earnings per share from continuing operations, diluted	$ 4.89	$ 3.26	$ 3.39