Earnings Per Share - Computation of Basic Earnings Per Share, Assuming Dilution (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net Earnings	$ 846	$ 996	$ 987	$ 1,111	$ 1,178	$ 859	$ 2,829	$ 3,148
Denominator:
Average Common Shares Outstanding (in shares)	1,994			2,122			2,022	2,156
Other Potentially Dilutive Common Shares (in shares)	5			4			5	5
Average Common Shares Outstanding, Assuming Dilution (in shares)	1,999			2,126			2,027	2,161
Net Earnings Per Share, Basic (in dollars per share)	$ 0.42			$ 0.52			$ 1.40	$ 1.46
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.42			$ 0.52			$ 1.40	$ 1.46