Segment Information Sales by Geographic Location (Details 4) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 35,667	$ 36,799	$ 33,841
Sales percentage	100.00%	100.00%	100.00%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 30,685	$ 31,611	$ 28,687
Sales percentage	86.00%	86.00%	85.00%
Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 1,939	$ 1,968	$ 1,836
Sales percentage	5.00%	5.00%	6.00%
All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 936	$ 1,138	$ 1,485
Sales percentage	3.00%	3.00%	4.00%
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 2,107	$ 2,082	$ 1,833
Sales percentage	6.00%	6.00%	5.00%
Aeronautics Systems | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 9,649	$ 10,452	$ 9,325
Sales percentage	87.00%	87.00%	85.00%
Aeronautics Systems | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 896	$ 841	$ 810
Sales percentage	8.00%	7.00%	7.00%
Aeronautics Systems | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 64	$ 180	$ 291
Sales percentage	1.00%	1.00%	3.00%
Aeronautics Systems | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 189	$ 122	$ 103
Aeronautics Systems | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 461	$ 574	$ 587
Sales percentage	4.00%	5.00%	5.00%
Aeronautics Systems | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 11,259	$ 12,169	$ 11,116
Sales percentage	100.00%	100.00%	100.00%
Defense Systems | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 3,670	$ 5,498	$ 5,362
Sales percentage	74.00%	81.00%	79.00%
Defense Systems | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 465	$ 402	$ 369
Sales percentage	9.00%	6.00%	5.00%
Defense Systems | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 538	$ 600	$ 824
Sales percentage	11.00%	9.00%	12.00%
Defense Systems | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 789	$ 728	$ 691
Defense Systems | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 314	$ 315	$ 249
Sales percentage	6.00%	4.00%	4.00%
Defense Systems | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 5,776	$ 7,543	$ 7,495
Sales percentage	100.00%	100.00%	100.00%
Mission Systems [Member] | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 7,295	$ 7,356	$ 6,843
Sales percentage	80.00%	79.00%	79.00%
Mission Systems [Member] | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 518	$ 707	$ 637
Sales percentage	6.00%	8.00%	7.00%
Mission Systems [Member] | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 324	$ 345	$ 352
Sales percentage	4.00%	4.00%	4.00%
Mission Systems [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 993	$ 779	$ 728
Mission Systems [Member] | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 1,004	$ 893	$ 850
Sales percentage	10.00%	9.00%	10.00%
Mission Systems [Member] | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 10,134	$ 10,080	$ 9,410
Sales percentage	100.00%	100.00%	100.00%
Space Systems | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 10,071	$ 8,305	$ 7,157
Sales percentage	96.00%	96.00%	98.00%
Space Systems | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 60	$ 18	$ 20
Sales percentage	1.00%	0.00%	0.00%
Space Systems | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 10	$ 13	$ 18
Sales percentage	0.00%	0.00%	0.00%
Space Systems | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 139	$ 108	$ 83
Space Systems | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 328	$ 300	$ 147
Sales percentage	3.00%	4.00%	2.00%
Space Systems | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 10,608	$ 8,744	$ 7,425
Sales percentage	100.00%	100.00%	100.00%