Information on Business Segments - Income Statement Information For Each Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net sales	$ 67,571	$ 65,984	$ 67,044
Aeronautics
Segment Reporting Information [Line Items]
Net sales	27,474	26,987	26,748
MFC
Segment Reporting Information [Line Items]
Net sales	11,253	11,317	11,693
RMS
Segment Reporting Information [Line Items]
Net sales	16,239	16,148	16,789
Space
Segment Reporting Information [Line Items]
Net sales	12,605	11,532	11,814
United States
Segment Reporting Information [Line Items]
Net sales	49,927	49,053	48,605
United States | Aeronautics
Segment Reporting Information [Line Items]
Net sales	18,440	18,176	17,345
United States | MFC
Segment Reporting Information [Line Items]
Net sales	7,780	7,821	8,347
United States | RMS
Segment Reporting Information [Line Items]
Net sales	11,256	11,678	12,070
United States | Space
Segment Reporting Information [Line Items]
Net sales	12,451	11,378	10,843
Europe
Segment Reporting Information [Line Items]
Net sales	7,011	6,267	6,760
Europe | Aeronautics
Segment Reporting Information [Line Items]
Net sales	4,898	4,303	3,973
Europe | MFC
Segment Reporting Information [Line Items]
Net sales	786	1,020	910
Europe | RMS
Segment Reporting Information [Line Items]
Net sales	1,265	857	909
Europe | Space
Segment Reporting Information [Line Items]
Net sales	62	87	968
Asia Pacific
Segment Reporting Information [Line Items]
Net sales	5,851	5,479	6,108
Asia Pacific | Aeronautics
Segment Reporting Information [Line Items]
Net sales	2,800	2,970	3,644
Asia Pacific | MFC
Segment Reporting Information [Line Items]
Net sales	687	461	292
Asia Pacific | RMS
Segment Reporting Information [Line Items]
Net sales	2,275	1,994	2,178
Asia Pacific | Space
Segment Reporting Information [Line Items]
Net sales	89	54	(6)
Middle East
Segment Reporting Information [Line Items]
Net sales	3,554	3,796	4,253
Middle East | Aeronautics
Segment Reporting Information [Line Items]
Net sales	987	1,103	1,351
Middle East | MFC
Segment Reporting Information [Line Items]
Net sales	1,844	1,858	2,066
Middle East | RMS
Segment Reporting Information [Line Items]
Net sales	721	823	827
Middle East | Space
Segment Reporting Information [Line Items]
Net sales	2	12	9
Other
Segment Reporting Information [Line Items]
Net sales	1,228	1,389	1,318
Other | Aeronautics
Segment Reporting Information [Line Items]
Net sales	349	435	435
Other | MFC
Segment Reporting Information [Line Items]
Net sales	156	157	78
Other | RMS
Segment Reporting Information [Line Items]
Net sales	722	796	805
Other | Space
Segment Reporting Information [Line Items]
Net sales	1	1	0
U.S. Government
Segment Reporting Information [Line Items]
Net sales	49,423	48,515	48,150
U.S. Government | Aeronautics
Segment Reporting Information [Line Items]
Net sales	18,311	18,026	17,262
U.S. Government | MFC
Segment Reporting Information [Line Items]
Net sales	7,769	7,814	8,341
U.S. Government | RMS
Segment Reporting Information [Line Items]
Net sales	10,961	11,331	11,736
U.S. Government | Space
Segment Reporting Information [Line Items]
Net sales	12,382	11,344	10,811
International
Segment Reporting Information [Line Items]
Net sales	17,644	16,931	18,439
International | Aeronautics
Segment Reporting Information [Line Items]
Net sales	9,034	8,811	9,403
International | MFC
Segment Reporting Information [Line Items]
Net sales	3,473	3,496	3,346
International | RMS
Segment Reporting Information [Line Items]
Net sales	4,983	4,470	4,719
International | Space
Segment Reporting Information [Line Items]
Net sales	154	154	971
U.S. commercial and other
Segment Reporting Information [Line Items]
Net sales	504	538	455
U.S. commercial and other | Aeronautics
Segment Reporting Information [Line Items]
Net sales	129	150	83
U.S. commercial and other | MFC
Segment Reporting Information [Line Items]
Net sales	11	7	6
U.S. commercial and other | RMS
Segment Reporting Information [Line Items]
Net sales	295	347	334
U.S. commercial and other | Space
Segment Reporting Information [Line Items]
Net sales	69	34	32
Fixed-price
Segment Reporting Information [Line Items]
Net sales	40,004	40,969	41,609
Fixed-price | Aeronautics
Segment Reporting Information [Line Items]
Net sales	18,664	19,431	19,734
Fixed-price | MFC
Segment Reporting Information [Line Items]
Net sales	7,661	8,014	8,079
Fixed-price | RMS
Segment Reporting Information [Line Items]
Net sales	10,403	10,460	11,125
Fixed-price | Space
Segment Reporting Information [Line Items]
Net sales	3,276	3,064	2,671
Cost-reimbursable
Segment Reporting Information [Line Items]
Net sales	27,567	25,015	25,435
Cost-reimbursable | Aeronautics
Segment Reporting Information [Line Items]
Net sales	8,810	7,556	7,014
Cost-reimbursable | MFC
Segment Reporting Information [Line Items]
Net sales	3,592	3,303	3,614
Cost-reimbursable | RMS
Segment Reporting Information [Line Items]
Net sales	5,836	5,688	5,664
Cost-reimbursable | Space
Segment Reporting Information [Line Items]
Net sales	9,329	8,468	9,143
Products
Segment Reporting Information [Line Items]
Net sales	56,265	55,466	56,435
Products | Aeronautics
Segment Reporting Information [Line Items]
Net sales	22,758	22,870	22,631
Products | MFC
Segment Reporting Information [Line Items]
Net sales	9,919	10,048	10,269
Products | RMS
Segment Reporting Information [Line Items]
Net sales	12,913	12,811	13,483
Products | Space
Segment Reporting Information [Line Items]
Net sales	10,675	9,737	10,052
Services
Segment Reporting Information [Line Items]
Net sales	11,306	10,518	10,609
Services | Aeronautics
Segment Reporting Information [Line Items]
Net sales	4,716	4,117	4,117
Services | MFC
Segment Reporting Information [Line Items]
Net sales	1,334	1,269	1,424
Services | RMS
Segment Reporting Information [Line Items]
Net sales	3,326	3,337	3,306
Services | Space
Segment Reporting Information [Line Items]
Net sales	$ 1,930	$ 1,795	$ 1,762