Information on Business Segments - Income Statement Information For Each Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 67,044	$ 65,398	$ 59,812
Aeronautics
Segment Reporting Information [Line Items]
Net sales	26,748	26,266	23,693
MFC
Segment Reporting Information [Line Items]
Net sales	11,693	11,257	10,131
RMS
Segment Reporting Information [Line Items]
Net sales	16,789	15,995	15,128
Space
Segment Reporting Information [Line Items]
Net sales	11,814	11,880	10,860
United States
Segment Reporting Information [Line Items]
Net sales	48,605	49,012	43,281
United States | Aeronautics
Segment Reporting Information [Line Items]
Net sales	17,345	18,254	14,960
United States | MFC
Segment Reporting Information [Line Items]
Net sales	8,347	8,415	7,666
United States | RMS
Segment Reporting Information [Line Items]
Net sales	12,070	12,009	11,306
United States | Space
Segment Reporting Information [Line Items]
Net sales	10,843	10,334	9,349
Europe
Segment Reporting Information [Line Items]
Net sales	6,760	6,334	5,928
Europe | Aeronautics
Segment Reporting Information [Line Items]
Net sales	3,973	3,283	3,224
Europe | MFC
Segment Reporting Information [Line Items]
Net sales	910	767	516
Europe | RMS
Segment Reporting Information [Line Items]
Net sales	909	806	769
Europe | Space
Segment Reporting Information [Line Items]
Net sales	968	1,478	1,419
Asia Pacific
Segment Reporting Information [Line Items]
Net sales	6,108	5,176	5,826
Asia Pacific | Aeronautics
Segment Reporting Information [Line Items]
Net sales	3,644	3,162	3,882
Asia Pacific | MFC
Segment Reporting Information [Line Items]
Net sales	292	280	420
Asia Pacific | RMS
Segment Reporting Information [Line Items]
Net sales	2,178	1,666	1,451
Asia Pacific | Space
Segment Reporting Information [Line Items]
Net sales	(6)	68	73
Middle East
Segment Reporting Information [Line Items]
Net sales	4,253	3,940	3,944
Middle East | Aeronautics
Segment Reporting Information [Line Items]
Net sales	1,351	1,344	1,465
Middle East | MFC
Segment Reporting Information [Line Items]
Net sales	2,066	1,749	1,481
Middle East | RMS
Segment Reporting Information [Line Items]
Net sales	827	847	979
Middle East | Space
Segment Reporting Information [Line Items]
Net sales	9	0	19
Other
Segment Reporting Information [Line Items]
Net sales	1,318	936	833
Other | Aeronautics
Segment Reporting Information [Line Items]
Net sales	435	223	162
Other | MFC
Segment Reporting Information [Line Items]
Net sales	78	46	48
Other | RMS
Segment Reporting Information [Line Items]
Net sales	805	667	623
Other | Space
Segment Reporting Information [Line Items]
Net sales	0	0	0
U.S. Government
Segment Reporting Information [Line Items]
Net sales	48,150	48,468	42,425
U.S. Government | Aeronautics
Segment Reporting Information [Line Items]
Net sales	17,262	18,175	14,776
U.S. Government | MFC
Segment Reporting Information [Line Items]
Net sales	8,341	8,404	7,524
U.S. Government | RMS
Segment Reporting Information [Line Items]
Net sales	11,736	11,596	10,803
U.S. Government | Space
Segment Reporting Information [Line Items]
Net sales	10,811	10,293	9,322
International
Segment Reporting Information [Line Items]
Net sales	18,439	16,386	16,531
International | Aeronautics
Segment Reporting Information [Line Items]
Net sales	9,403	8,012	8,733
International | MFC
Segment Reporting Information [Line Items]
Net sales	3,346	2,842	2,465
International | RMS
Segment Reporting Information [Line Items]
Net sales	4,719	3,986	3,822
International | Space
Segment Reporting Information [Line Items]
Net sales	971	1,546	1,511
U.S. commercial and other
Segment Reporting Information [Line Items]
Net sales	455	544	856
U.S. commercial and other | Aeronautics
Segment Reporting Information [Line Items]
Net sales	83	79	184
U.S. commercial and other | MFC
Segment Reporting Information [Line Items]
Net sales	6	11	142
U.S. commercial and other | RMS
Segment Reporting Information [Line Items]
Net sales	334	413	503
U.S. commercial and other | Space
Segment Reporting Information [Line Items]
Net sales	32	41	27
Fixed-price
Segment Reporting Information [Line Items]
Net sales	41,609	39,106	36,205
Fixed-price | Aeronautics
Segment Reporting Information [Line Items]
Net sales	19,734	18,477	17,239
Fixed-price | MFC
Segment Reporting Information [Line Items]
Net sales	8,079	7,587	6,449
Fixed-price | RMS
Segment Reporting Information [Line Items]
Net sales	11,125	10,795	10,382
Fixed-price | Space
Segment Reporting Information [Line Items]
Net sales	2,671	2,247	2,135
Cost-reimbursable
Segment Reporting Information [Line Items]
Net sales	25,435	26,292	23,607
Cost-reimbursable | Aeronautics
Segment Reporting Information [Line Items]
Net sales	7,014	7,789	6,454
Cost-reimbursable | MFC
Segment Reporting Information [Line Items]
Net sales	3,614	3,670	3,682
Cost-reimbursable | RMS
Segment Reporting Information [Line Items]
Net sales	5,664	5,200	4,746
Cost-reimbursable | Space
Segment Reporting Information [Line Items]
Net sales	9,143	9,633	8,725
Products
Segment Reporting Information [Line Items]
Net sales	56,435	54,928	50,053
Products | Aeronautics
Segment Reporting Information [Line Items]
Net sales	22,631	22,327	20,319
Products | MFC
Segment Reporting Information [Line Items]
Net sales	10,269	9,804	8,424
Products | RMS
Segment Reporting Information [Line Items]
Net sales	13,483	12,748	12,206
Products | Space
Segment Reporting Information [Line Items]
Net sales	10,052	10,049	9,104
Services
Segment Reporting Information [Line Items]
Net sales	10,609	10,470	9,759
Services | Aeronautics
Segment Reporting Information [Line Items]
Net sales	4,117	3,939	3,374
Services | MFC
Segment Reporting Information [Line Items]
Net sales	1,424	1,453	1,707
Services | RMS
Segment Reporting Information [Line Items]
Net sales	3,306	3,247	2,922
Services | Space
Segment Reporting Information [Line Items]
Net sales	$ 1,762	$ 1,831	$ 1,756