Segment Information Sales by Geographic Location (Details 4) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 36,602	$ 35,667	$ 36,799
Sales percentage	100.00%	100.00%	100.00%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 31,754	$ 30,685	$ 31,611
Sales percentage	87.00%	86.00%	86.00%
Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 1,802	$ 1,939	$ 1,968
Sales percentage	5.00%	5.00%	5.00%
All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 794	$ 936	$ 1,138
Sales percentage	2.00%	3.00%	3.00%
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 2,252	$ 2,107	$ 2,082
Sales percentage	6.00%	6.00%	6.00%
Aeronautics Systems | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 8,948	$ 9,649	$ 10,452
Sales percentage	87.00%	87.00%	87.00%
Aeronautics Systems | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 708	$ 896	$ 841
Sales percentage	7.00%	8.00%	7.00%
Aeronautics Systems | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 51	$ 64	$ 180
Sales percentage	0.00%	1.00%	1.00%
Aeronautics Systems | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 239	$ 189	$ 122
Aeronautics Systems | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 585	$ 461	$ 574
Sales percentage	6.00%	4.00%	5.00%
Aeronautics Systems | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 10,531	$ 11,259	$ 12,169
Sales percentage	100.00%	100.00%	100.00%
Defense Systems | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 3,415	$ 3,670	$ 5,498
Sales percentage	71.00%	74.00%	81.00%
Defense Systems | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 454	$ 465	$ 402
Sales percentage	10.00%	9.00%	6.00%
Defense Systems | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 427	$ 538	$ 600
Sales percentage	9.00%	11.00%	9.00%
Defense Systems | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 806	$ 789	$ 728
Defense Systems | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 477	$ 314	$ 315
Sales percentage	10.00%	6.00%	4.00%
Defense Systems | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 5,579	$ 5,776	$ 7,543
Sales percentage	100.00%	100.00%	100.00%
Mission Systems [Member] | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 7,572	$ 7,295	$ 7,356
Sales percentage	81.00%	80.00%	79.00%
Mission Systems [Member] | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 531	$ 518	$ 707
Sales percentage	6.00%	6.00%	8.00%
Mission Systems [Member] | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 301	$ 324	$ 345
Sales percentage	3.00%	4.00%	4.00%
Mission Systems [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 1,015	$ 993	$ 779
Mission Systems [Member] | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 977	$ 1,004	$ 893
Sales percentage	10.00%	10.00%	9.00%
Mission Systems [Member] | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 10,396	$ 10,134	$ 10,080
Sales percentage	100.00%	100.00%	100.00%
Space Systems | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 11,819	$ 10,071	$ 8,305
Sales percentage	97.00%	96.00%	96.00%
Space Systems | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 109	$ 60	$ 18
Sales percentage	1.00%	1.00%	0.00%
Space Systems | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 15	$ 10	$ 13
Sales percentage	0.00%	0.00%	0.00%
Space Systems | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 119	$ 139	$ 108
Space Systems | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 213	$ 328	$ 300
Sales percentage	2.00%	3.00%	4.00%
Space Systems | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 12,275	$ 10,608	$ 8,744
Sales percentage	100.00%	100.00%	100.00%