Information on Business Segments - Summary of Financial Information for Each Business Segment (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Jul. 31, 2020	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net sales
Net sales			$ 65,984	$ 67,044	$ 65,398
Operating profit
Operating profit			8,348	9,123	8,644
Unallocated items
Severance and other charges		$ 100	100	36	27
Severance and restructuring costs, after-tax		$ 79		$ 28	$ 21
Severance and restructuring costs, per share, after-tax (in dollars per share)		$ 0.31		$ 0.10	$ 0.08
Equity method investee impairment			0	$ 0	$ 128
AMMROC
Unallocated items
Equity method investee impairment	$ 128				128
Operating Segments
Net sales
Net sales			65,984	67,044	65,398
Operating profit
Operating profit			7,219	7,379	7,152
Segment Reconciling Items
Unallocated items
Total FAS/CAS pension operating adjustment			1,709	1,960	1,876
Severance and restructuring			(100)	(36)	(27)
Other, net			(480)	(180)	(357)
Total unallocated, net			1,129	1,744	1,492
Aeronautics
Net sales
Net sales			26,987	26,748	26,266
Aeronautics | Operating Segments
Net sales
Net sales			26,987	26,748	26,266
Operating profit
Operating profit			2,866	2,799	2,843
Missiles and Fire Control
Net sales
Net sales			11,317	11,693	11,257
Missiles and Fire Control | Operating Segments
Net sales
Net sales			11,317	11,693	11,257
Operating profit
Operating profit			1,635	1,648	1,545
Rotary and Mission Systems
Net sales
Net sales			16,148	16,789	15,995
Rotary and Mission Systems | Operating Segments
Net sales
Net sales			16,148	16,789	15,995
Operating profit
Operating profit			1,673	1,798	1,615
Space
Net sales
Net sales			11,532	11,814	11,880
Space | Operating Segments
Net sales
Net sales			11,532	11,814	11,880
Operating profit
Operating profit			$ 1,045	$ 1,134	$ 1,149