Segment Information Sales by Customer Type (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue, Major Customer [Line Items]
Sales	$ 39,290	$ 36,602	$ 35,667
Sales percentage	100.00%	100.00%	100.00%
US Government
Revenue, Major Customer [Line Items]
Sales	$ 33,882	$ 31,323	$ 30,334
Sales percentage	86.00%	86.00%	85.00%
US Government | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 9,132	$ 8,930	$ 9,631
Sales percentage	85.00%	85.00%	85.00%
US Government | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 3,497	$ 3,344	$ 3,595
Sales percentage	60.00%	61.00%	62.00%
US Government | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 7,999	$ 7,471	$ 7,223
Sales percentage	73.00%	72.00%	71.00%
US Government | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 13,254	$ 11,578	$ 9,885
Sales percentage	95.00%	94.00%	93.00%
International
Revenue, Major Customer [Line Items]
Sales	$ 4,905	$ 4,848	$ 4,982
Sales percentage	13.00%	13.00%	14.00%
International | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 1,379	$ 1,344	$ 1,421
Sales percentage	13.00%	13.00%	13.00%
International | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 1,491	$ 1,358	$ 1,317
Sales percentage	25.00%	24.00%	23.00%
International | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,757	$ 1,809	$ 1,846
Sales percentage	16.00%	17.00%	18.00%
International | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 278	$ 337	$ 398
Sales percentage	2.00%	3.00%	4.00%
Other Customers
Revenue, Major Customer [Line Items]
Sales	$ 503	$ 431	$ 351
Sales percentage	1.00%	1.00%	1.00%
Other Customers | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 35	$ 18	$ 18
Sales percentage	0.00%	0.00%	0.00%
Other Customers | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 76	$ 71	$ 75
Sales percentage	1.00%	1.00%	1.00%
Other Customers | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 85	$ 101	$ 72
Sales percentage	1.00%	1.00%	1.00%
Other Customers | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 307	$ 241	$ 186
Sales percentage	2.00%	2.00%	2.00%
Intersegment Sales [Member] | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 240	$ 239	$ 189
Sales percentage	2.00%	2.00%	2.00%
Intersegment Sales [Member] | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 798	$ 806	$ 789
Sales percentage	14.00%	14.00%	14.00%
Intersegment Sales [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,054	$ 1,015	$ 993
Sales percentage	10.00%	10.00%	10.00%
Intersegment Sales [Member] | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 107	$ 119	$ 139
Sales percentage	1.00%	1.00%	1.00%
Operating Segments [Member] | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 10,786	$ 10,531	$ 11,259
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 5,862	$ 5,579	$ 5,776
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 10,895	$ 10,396	$ 10,134
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 13,946	$ 12,275	$ 10,608
Sales percentage	100.00%	100.00%	100.00%