Basis of Presentation (Unaudited) Contract Estimates (Details 2) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2020
Change in Accounting Estimate [Line Items]
Operating income	$ 1,090		$ 967	$ 2,161	$ 1,914
Net earnings	$ 940		$ 812	$ 1,884	$ 1,654
Diluted earnings per share	$ 6.36		$ 5.34	$ 12.69	$ 10.83
Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Revenue	$ 37		$ 95	$ 111	$ 157
Operating income	38		76	132	122
Net earnings	$ 30		$ 60	$ 104	$ 96
Diluted earnings per share	$ 0.20		$ 0.39	$ 0.70	$ 0.63
Contracts Accounted for under Percentage of Completion [Member] | B-21 Program LRIP Options [Member] | Aeronautics Systems [Member]
Change in Accounting Estimate [Line Items]
Loss Contingency, Loss in Period		$ 1,560
Loss Contingency Accrual	$ 1,500			$ 1,500
Loss Contingency, Accrual, Current	$ 972			$ 972
Contracts Accounted for under Percentage of Completion [Member] | HALO Program | Space Systems [Member]
Change in Accounting Estimate [Line Items]
Operating income			$ 36
Contracts Accounted for under Percentage of Completion [Member] | Sentinel EMD phase [Member] | Space Systems [Member]
Change in Accounting Estimate [Line Items]
Sentinel Award						$ 13,300