Segment Information (Unaudited) Sales by Customer Type (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue, Major Customer [Line Items]
Revenues	$ 10,218	$ 9,576	$ 20,351	$ 18,877
Sales percentage	100.00%	100.00%	100.00%	100.00%
US Government
Revenue, Major Customer [Line Items]
Revenues	$ 8,888	$ 8,254	$ 17,732	$ 16,266
Sales percentage	87.00%	86.00%	87.00%	86.00%
US Government | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,536	$ 2,215	$ 5,061	$ 4,323
Sales percentage	86.00%	86.00%	85.00%	85.00%
US Government | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 932	$ 848	$ 1,862	$ 1,651
Sales percentage	62.00%	60.00%	64.00%	59.00%
US Government | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,028	$ 1,877	$ 3,940	$ 3,812
Sales percentage	73.00%	71.00%	72.00%	73.00%
US Government | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 3,392	$ 3,314	$ 6,869	$ 6,480
Sales percentage	95.00%	95.00%	95.00%	95.00%
International(2)
Revenue, Major Customer [Line Items]
Revenues	$ 1,185	$ 1,202	$ 2,347	$ 2,368
Sales percentage	12.00%	13.00%	12.00%	13.00%
International(2) | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 363	$ 308	$ 744	$ 639
Sales percentage	12.00%	12.00%	13.00%	12.00%
International(2) | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 339	$ 357	$ 601	$ 745
Sales percentage	22.00%	25.00%	21.00%	27.00%
International(2) | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 427	$ 454	$ 881	$ 830
Sales percentage	15.00%	17.00%	16.00%	16.00%
International(2) | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 56	$ 83	$ 121	$ 154
Sales percentage	2.00%	2.00%	2.00%	2.00%
Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 145	$ 120	$ 272	$ 243
Sales percentage	1.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 5	$ 8	$ 9	$ 19
Sales percentage	0.00%	0.00%	0.00%	0.00%
Other Customers [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 19	$ 20	$ 40	$ 36
Sales percentage	1.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 21	$ 27	$ 37	$ 42
Sales percentage	1.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 100	$ 65	$ 186	$ 146
Sales percentage	2.00%	2.00%	2.00%	2.00%
Intersegment Sales [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 59	$ 64	$ 118	$ 129
Sales percentage	2.00%	2.00%	2.00%	3.00%
Intersegment Sales [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 223	$ 195	$ 422	$ 364
Sales percentage	15.00%	14.00%	14.00%	13.00%
Intersegment Sales [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 297	$ 283	$ 574	$ 520
Sales percentage	11.00%	11.00%	11.00%	10.00%
Intersegment Sales [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 25	$ 26	$ 52	$ 58
Sales percentage	1.00%	1.00%	1.00%	1.00%
Operating Segments [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,963	$ 2,595	$ 5,932	$ 5,110
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 1,513	$ 1,420	$ 2,925	$ 2,796
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,773	$ 2,641	$ 5,432	$ 5,204
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 3,573	$ 3,488	$ 7,228	$ 6,838
Sales percentage	100.00%	100.00%	100.00%	100.00%