Segment Information (Unaudited) Sales by Customer Type (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue, Major Customer [Line Items]
Revenues	$ 9,996	$ 9,775	$ 30,347	$ 28,652
Sales percentage	100.00%	100.00%	100.00%	100.00%
US Government
Revenue, Major Customer [Line Items]
Revenues	$ 8,622	$ 8,431	$ 26,354	$ 24,697
Sales percentage	86.00%	86.00%	87.00%	86.00%
US Government | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,382	$ 2,331	$ 7,443	$ 6,654
Sales percentage	83.00%	84.00%	85.00%	85.00%
US Government | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 1,541	$ 1,476	$ 4,633	$ 4,351
Sales percentage	74.00%	72.00%	74.00%	72.00%
US Government | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,093	$ 1,917	$ 6,033	$ 5,729
Sales percentage	74.00%	73.00%	73.00%	73.00%
US Government | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,606	$ 2,707	$ 8,245	$ 7,963
Sales percentage	91.00%	92.00%	92.00%	91.00%
International(2)
Revenue, Major Customer [Line Items]
Revenues	$ 1,218	$ 1,239	$ 3,565	$ 3,607
Sales percentage	12.00%	13.00%	12.00%	13.00%
International(2) | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 430	$ 377	$ 1,174	$ 1,016
Sales percentage	15.00%	14.00%	13.00%	13.00%
International(2) | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 311	$ 358	$ 912	$ 1,103
Sales percentage	15.00%	17.00%	15.00%	18.00%
International(2) | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 427	$ 432	$ 1,308	$ 1,262
Sales percentage	15.00%	16.00%	16.00%	16.00%
International(2) | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 50	$ 72	$ 171	$ 226
Sales percentage	2.00%	2.00%	2.00%	3.00%
Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 156	$ 105	$ 428	$ 348
Sales percentage	2.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 6	$ 4	$ 15	$ 23
Sales percentage	0.00%	0.00%	0.00%	0.00%
Other Customers [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 15	$ 19	$ 55	$ 55
Sales percentage	1.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 28	$ 16	$ 65	$ 58
Sales percentage	1.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 107	$ 66	$ 293	$ 212
Sales percentage	3.00%	2.00%	3.00%	2.00%
Intersegment Sales [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 60	$ 54	$ 178	$ 183
Sales percentage	2.00%	2.00%	2.00%	2.00%
Intersegment Sales [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 217	$ 197	$ 627	$ 549
Sales percentage	10.00%	10.00%	10.00%	9.00%
Intersegment Sales [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 275	$ 263	$ 849	$ 783
Sales percentage	10.00%	10.00%	10.00%	10.00%
Intersegment Sales [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 107	$ 108	$ 312	$ 374
Sales percentage	4.00%	4.00%	3.00%	4.00%
Operating Segments [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,878	$ 2,766	$ 8,810	$ 7,876
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,084	$ 2,050	$ 6,227	$ 6,058
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,823	$ 2,628	$ 8,255	$ 7,832
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,870	$ 2,953	$ 9,021	$ 8,775
Sales percentage	100.00%	100.00%	100.00%	100.00%