Earnings Per Share - Computation of Basic Earnings Per Share, Assuming Dilution (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net Earnings	$ 1,178	$ 859	$ 1,173	$ 706	$ 2,037	$ 1,879
Denominator:
Average Common Shares Outstanding (in shares)	2,158		2,270		2,173	2,276
Other Potentially Dilutive Common Shares (in shares)	5		5		5	5
Average Common Shares Outstanding, Assuming Dilution (in shares)	2,163		2,275		2,178	2,281
Net Earnings Per Share, Basic (in dollars per share)	$ 0.55		$ 0.52		$ 0.94	$ 0.83
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.54		$ 0.52		$ 0.94	$ 0.82