Revision of Prior Period Financial Statements - Schedule of Comprehensive Income (Details) - USD ($) $ in Millions		3 Months Ended					6 Months Ended	9 Months Ended	12 Months Ended
		Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2023	Sep. 30, 2023	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Earnings		$ 880	$ 882	$ 828	$ 984	$ 974	$ 1,958	$ 2,786	$ 3,470	[1],[2]	$ 3,668	[1],[2]	$ 4,114	[1],[3]
Other Comprehensive Income (Loss) - Net of Tax: Pension and Other Post-Employment Benefits	[3]								41		129		(120)
Total Other Comprehensive Income (Loss)									47	[3]	131	[2]	(34)	[2]
Total Comprehensive Earnings		886	997	846	980	976	1,956	2,802	$ 3,517	[2]	3,799	[3]	4,080	[2]
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Earnings		893	886	846	996	987	1,983	2,829			3,715		4,166
Other Comprehensive Income (Loss) - Net of Tax: Pension and Other Post-Employment Benefits											74		(66)
Total Other Comprehensive Income (Loss)											76		20
Total Comprehensive Earnings		899	946	864	992	989	1,981	2,845			3,791		4,186
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Earnings		(13)	(4)	(18)	(12)	(13)	(25)	(43)			(47)		(52)
Other Comprehensive Income (Loss) - Net of Tax: Pension and Other Post-Employment Benefits											55		(54)
Total Other Comprehensive Income (Loss)											55		(54)
Total Comprehensive Earnings		$ (13)	$ 51	$ (18)	$ (12)	$ (13)	$ (25)	$ (43)			$ 8		$ (106)

[1] See Note 20, Revision of Prior Period Financial Statements

[2] See Note 20, Revision of Prior Period Financial Statements.

[3] See Note 20, Revision of Prior Period Financial Statements.