Segment Information Sales by Customer Type (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue, Major Customer [Line Items]
Sales	$ 36,602	$ 35,667	$ 36,799
Sales percentage	100.00%	100.00%	100.00%
US Government
Revenue, Major Customer [Line Items]
Sales	$ 31,323	$ 30,334	$ 30,903
Sales percentage	86.00%	85.00%	84.00%
US Government | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 8,930	$ 9,631	$ 10,411
Sales percentage	85.00%	85.00%	86.00%
US Government | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 3,344	$ 3,595	$ 5,103
Sales percentage	61.00%	62.00%	68.00%
US Government | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 7,471	$ 7,223	$ 7,279
Sales percentage	72.00%	71.00%	72.00%
US Government | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 11,578	$ 9,885	$ 8,110
Sales percentage	94.00%	93.00%	93.00%
International
Revenue, Major Customer [Line Items]
Sales	$ 4,848	$ 4,982	$ 5,188
Sales percentage	13.00%	14.00%	14.00%
International | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 1,344	$ 1,421	$ 1,595
Sales percentage	13.00%	13.00%	13.00%
International | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 1,358	$ 1,317	$ 1,317
Sales percentage	24.00%	23.00%	17.00%
International | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,809	$ 1,846	$ 1,945
Sales percentage	17.00%	18.00%	19.00%
International | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 337	$ 398	$ 331
Sales percentage	3.00%	4.00%	4.00%
Other Customers
Revenue, Major Customer [Line Items]
Sales	$ 431	$ 351	$ 708
Sales percentage	1.00%	1.00%	2.00%
Other Customers | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 18	$ 18	$ 41
Sales percentage	0.00%	0.00%	0.00%
Other Customers | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 71	$ 75	$ 395
Sales percentage	1.00%	1.00%	5.00%
Other Customers | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 101	$ 72	$ 77
Sales percentage	1.00%	1.00%	1.00%
Other Customers | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 241	$ 186	$ 195
Sales percentage	2.00%	2.00%	2.00%
Intersegment Sales [Member] | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 239	$ 189	$ 122
Sales percentage	2.00%	2.00%	1.00%
Intersegment Sales [Member] | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 806	$ 789	$ 728
Sales percentage	14.00%	14.00%	10.00%
Intersegment Sales [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,015	$ 993	$ 779
Sales percentage	10.00%	10.00%	8.00%
Intersegment Sales [Member] | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 119	$ 139	$ 108
Sales percentage	1.00%	1.00%	1.00%
Operating Segments [Member] | Aeronautics Systems
Revenue, Major Customer [Line Items]
Sales	$ 10,531	$ 11,259	$ 12,169
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Defense Systems
Revenue, Major Customer [Line Items]
Sales	$ 5,579	$ 5,776	$ 7,543
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 10,396	$ 10,134	$ 10,080
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Space Systems
Revenue, Major Customer [Line Items]
Sales	$ 12,275	$ 10,608	$ 8,744
Sales percentage	100.00%	100.00%	100.00%