Earnings Per Share - Schedule of Computation of Basic Earnings Per Share, Assuming Dilution (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended										6 Months Ended				9 Months Ended	12 Months Ended
	Jun. 30, 2024		Mar. 31, 2024		Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023		Mar. 31, 2023		Jun. 30, 2024		Jun. 30, 2023		Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Numerator:
Net Earnings	$ 963	[1]	$ 880	[1]	$ 882	$ 828	$ 984	[2]	$ 974	[3]	$ 1,843	[2]	$ 1,958	[2]	$ 2,786	$ 3,668	$ 4,114
Denominator:
Average Common Shares Outstanding (in shares)	1,944						2,020	[2]			1,951	[2]	2,037	[2]
Other Potentially Dilutive Common Shares (in shares)	4						5				4		5
Average Common Shares Outstanding, Assuming Dilution (in shares)	1,948						2,025	[2]			1,955	[2]	2,042	[2]
Net Earnings Per Share, Basic (in dollars per share)	$ 0.50		$ 0.45		$ 0.45	$ 0.42	$ 0.49	[2]	$ 0.47		$ 0.94	[2]	$ 0.96	[2]	$ 1.38	$ 1.83	$ 1.93
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.49		$ 0.45		$ 0.45	$ 0.41	$ 0.49	[2]	$ 0.47		$ 0.94	[2]	$ 0.96	[2]	$ 1.37	$ 1.82	$ 1.92

[1] See Note 11, Revision of Prior Period Financial Statements.

[2] See Note 11, Revision of Prior Period Financial Statements.

[3] See Note 11, Revision of Prior Period Financial Statements.