Segment Information (Unaudited) Reconciliation to Consolidated Operating Income (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	$ 10,351	$ 10,218	$ 19,819	$ 20,351
Total operating costs and expenses	9,157	9,128	18,052	18,190
Operating income	1,425	1,090	1,998	2,161
Interest and Debt Expense	(173)	(154)	(329)	(300)
Non-operating FAS pension benefit	137	167	267	335
Other, net	38	43	69	81
Earnings before income taxes	1,427	1,146	2,005	2,277
Gain (Loss) on Disposition of Business	231	0	231	0
Unallowable State Taxes and Transactions Costs from Divestiture	(19)
Product [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	8,258	8,076	15,779	16,178
Service [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	2,093	2,142	4,040	4,173
Operating Segments [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Operating income	1,219	1,101	1,787	2,205
Operating Segments [Member] | Aeronautics Systems [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	3,114	3,060	5,928	6,104
Operating income	321	312	138	618
Operating Segments [Member] | Aeronautics Systems [Member] | Product [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	2,109	2,028	4,467	4,087
Operating Segments [Member] | Aeronautics Systems [Member] | Service [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	649	692	1,250	1,341
Operating Segments [Member] | Aeronautics Systems [Member] | Intersegment Costs [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	35	28	73	58
Operating Segments [Member] | Defense Systems [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	1,991	1,859	3,796	3,596
Operating income	253	191	432	347
Operating Segments [Member] | Defense Systems [Member] | Product [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	1,372	1,295	2,634	2,495
Operating Segments [Member] | Defense Systems [Member] | Service [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	319	333	643	678
Operating Segments [Member] | Defense Systems [Member] | Intersegment Costs [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	47	40	87	76
Operating Segments [Member] | Mission Systems [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	3,157	2,773	5,964	5,432
Operating income	441	361	802	739
Operating Segments [Member] | Mission Systems [Member] | Product [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	1,945	1,685	3,675	3,290
Operating Segments [Member] | Mission Systems [Member] | Service [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	483	475	917	921
Operating Segments [Member] | Mission Systems [Member] | Intersegment Costs [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	288	252	570	482
Operating Segments [Member] | Space Systems [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	2,646	3,002	5,214	6,151
Operating income	280	304	563	634
Operating Segments [Member] | Space Systems [Member] | Product [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	1,893	2,254	3,722	4,629
Operating Segments [Member] | Space Systems [Member] | Service [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	362	355	724	705
Operating Segments [Member] | Space Systems [Member] | Intersegment Costs [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	111	89	205	183
Intersegment OM
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Operating income	76	67	148	133
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total operating costs and expenses	143	(17)	85	(56)
FAS/CAS operating adjustment	$ 63	$ 6	$ 126	$ 12