Segment Information Sales by Contract Type (Details 3) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue, Contract Type [Line Items]
Sales	$ 36,602	$ 35,667	$ 36,799
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Aeronautics Systems
Revenue, Contract Type [Line Items]
Sales	$ 10,531	$ 11,259	$ 12,169
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Defense Systems
Revenue, Contract Type [Line Items]
Sales	$ 5,579	$ 5,776	$ 7,543
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Mission Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 10,396	$ 10,134	$ 10,080
Sales percentage	100.00%	100.00%	100.00%
Operating Segments [Member] | Space Systems
Revenue, Contract Type [Line Items]
Sales	$ 12,275	$ 10,608	$ 8,744
Sales percentage	100.00%	100.00%	100.00%
Cost-type
Revenue, Contract Type [Line Items]
Sales	$ 18,711	$ 18,028	$ 18,438
Sales percentage	51.00%	51.00%	50.00%
Cost-type | Aeronautics Systems
Revenue, Contract Type [Line Items]
Sales	$ 5,013	$ 5,419	$ 6,142
Sales percentage	49.00%	49.00%	51.00%
Cost-type | Defense Systems
Revenue, Contract Type [Line Items]
Sales	$ 1,497	$ 1,739	$ 2,345
Sales percentage	31.00%	35.00%	34.00%
Cost-type | Mission Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 3,622	$ 3,139	$ 3,582
Sales percentage	39.00%	34.00%	39.00%
Cost-type | Space Systems
Revenue, Contract Type [Line Items]
Sales	$ 8,579	$ 7,731	$ 6,369
Sales percentage	71.00%	74.00%	74.00%
Fixed-price
Revenue, Contract Type [Line Items]
Sales	$ 17,891	$ 17,639	$ 18,361
Sales percentage	49.00%	49.00%	50.00%
Fixed-price | Aeronautics Systems
Revenue, Contract Type [Line Items]
Sales	$ 5,279	$ 5,651	$ 5,905
Sales percentage	51.00%	51.00%	49.00%
Fixed-price | Defense Systems
Revenue, Contract Type [Line Items]
Sales	$ 3,276	$ 3,248	$ 4,470
Sales percentage	69.00%	65.00%	66.00%
Fixed-price | Mission Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 5,759	$ 6,002	$ 5,719
Sales percentage	61.00%	66.00%	61.00%
Fixed-price | Space Systems
Revenue, Contract Type [Line Items]
Sales	$ 3,577	$ 2,738	$ 2,267
Sales percentage	29.00%	26.00%	26.00%
Intersegment Sales [Member] | Aeronautics Systems
Revenue, Contract Type [Line Items]
Sales	$ 239	$ 189	$ 122
Intersegment Sales [Member] | Defense Systems
Revenue, Contract Type [Line Items]
Sales	806	789	728
Intersegment Sales [Member] | Mission Systems [Member]
Revenue, Contract Type [Line Items]
Sales	1,015	993	779
Intersegment Sales [Member] | Space Systems
Revenue, Contract Type [Line Items]
Sales	$ 119	$ 139	$ 108