Information on Business Segments - Summary of Financial Information for Each Business Segment, Intersegment Sale, Depreciation and Capital Expenditures (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total net sales	$ 65,984	$ 67,044	$ 65,398
Capital expenditures	1,670	1,522	1,766
PP&E depreciation and software amortization	1,156	1,079	1,019
Amortization of purchased intangibles	248	285	271
Aeronautics
Segment Reporting Information [Line Items]
Total net sales	26,987	26,748	26,266
Missiles and Fire Control
Segment Reporting Information [Line Items]
Total net sales	11,317	11,693	11,257
Rotary and Mission Systems
Segment Reporting Information [Line Items]
Total net sales	16,148	16,789	15,995
Space
Segment Reporting Information [Line Items]
Total net sales	11,532	11,814	11,880
Intersegment Eliminations
Segment Reporting Information [Line Items]
Total net sales	3,187	3,092	3,085
Intersegment Eliminations | Aeronautics
Segment Reporting Information [Line Items]
Total net sales	249	219	243
Intersegment Eliminations | Missiles and Fire Control
Segment Reporting Information [Line Items]
Total net sales	627	618	562
Intersegment Eliminations | Rotary and Mission Systems
Segment Reporting Information [Line Items]
Total net sales	1,930	1,895	1,903
Intersegment Eliminations | Space
Segment Reporting Information [Line Items]
Total net sales	381	360	377
Operating Segments
Segment Reporting Information [Line Items]
Total net sales	65,984	67,044	65,398
Capital expenditures	1,371	1,365	1,639
PP&E depreciation and software amortization	989	956	910
Operating Segments | Aeronautics
Segment Reporting Information [Line Items]
Total net sales	26,987	26,748	26,266
Capital expenditures	461	477	534
PP&E depreciation and software amortization	383	348	348
Amortization of purchased intangibles	1	1	0
Operating Segments | Missiles and Fire Control
Segment Reporting Information [Line Items]
Total net sales	11,317	11,693	11,257
Capital expenditures	253	304	391
PP&E depreciation and software amortization	160	153	136
Amortization of purchased intangibles	2	2	2
Operating Segments | Rotary and Mission Systems
Segment Reporting Information [Line Items]
Total net sales	16,148	16,789	15,995
Capital expenditures	266	279	311
PP&E depreciation and software amortization	245	250	244
Amortization of purchased intangibles	233	232	232
Operating Segments | Space
Segment Reporting Information [Line Items]
Total net sales	11,532	11,814	11,880
Capital expenditures	391	305	403
PP&E depreciation and software amortization	201	205	182
Amortization of purchased intangibles	12	50	37
Corporate assets
Segment Reporting Information [Line Items]
Capital expenditures	299	157	127
PP&E depreciation and software amortization	$ 167	$ 123	$ 109