Basis of Presentation (Unaudited) Contract Estimates (Details 2) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Change in Accounting Estimate [Line Items]
Operating income	$ 1,071		$ 947
Net earnings	$ 944		$ 842
Diluted earnings per share	$ 6.32		$ 5.50
Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Revenue	$ 74		$ 62
Operating income	94		46
Net earnings	$ 74		$ 36
Diluted earnings per share	$ 0.50		$ 0.23
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
Loss Contingency, Accrual, Current	$ 994