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, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net Earnings	$ 996	$ 987	$ 1,178	$ 859	$ 1,983	$ 2,037
Denominator:
Average Common Shares Outstanding (in shares)	2,020		2,158		2,037	2,173
Other Potentially Dilutive Common Shares (in shares)	5		5		5	5
Average Common Shares Outstanding, Assuming Dilution (in shares)	2,025		2,163		2,042	2,178
Net Earnings Per Share, Basic (in dollars per share)	$ 0.49		$ 0.55		$ 0.97	$ 0.94
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.49		$ 0.54		$ 0.97	$ 0.94