Segment Information (Unaudited) Sales by Customer Type (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue, Major Customer [Line Items]
Sales	$ 8,801	$ 9,151	$ 17,598	$ 18,308
Sales percentage	100.00%	100.00%	100.00%	100.00%
US Government
Revenue, Major Customer [Line Items]
Sales	$ 7,508	$ 7,861	$ 15,077	$ 15,555
Sales percentage	85.00%	86.00%	86.00%	85.00%
US Government | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,134	$ 2,513	$ 4,426	$ 5,054
Sales percentage	84.00%	86.00%	85.00%	86.00%
US Government | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 774	$ 879	$ 1,549	$ 1,872
Sales percentage	61.00%	62.00%	61.00%	63.00%
US Government | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,802	$ 1,901	$ 3,596	$ 3,735
Sales percentage	72.00%	73.00%	72.00%	72.00%
US Government | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,798	$ 2,568	$ 5,506	$ 4,894
Sales percentage	94.00%	93.00%	94.00%	93.00%
International(2)
Revenue, Major Customer [Line Items]
Sales	$ 1,155	$ 1,209	$ 2,296	$ 2,566
Sales percentage	13.00%	13.00%	13.00%	14.00%
International(2) | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 328	$ 351	$ 671	$ 750
Sales percentage	13.00%	12.00%	13.00%	12.00%
International(2) | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 328	$ 335	$ 621	$ 686
Sales percentage	25.00%	23.00%	24.00%	22.00%
International(2) | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 415	$ 419	$ 848	$ 921
Sales percentage	16.00%	16.00%	17.00%	18.00%
International(2) | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 84	$ 104	$ 156	$ 209
Sales percentage	3.00%	4.00%	3.00%	4.00%
Other Customers [Member]
Revenue, Major Customer [Line Items]
Sales	$ 138	$ 81	$ 225	$ 187
Sales percentage	2.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 14	$ 4	$ 17	$ 10
Sales percentage	1.00%	0.00%	0.00%	0.00%
Other Customers [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 18	$ 18	$ 34	$ 51
Sales percentage	1.00%	1.00%	1.00%	2.00%
Other Customers [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 40	$ 14	$ 64	$ 30
Sales percentage	2.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 66	$ 45	$ 110	$ 96
Sales percentage	2.00%	2.00%	2.00%	2.00%
Intersegment Sales [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 58	$ 45	$ 123	$ 89
Sales percentage	2.00%	2.00%	2.00%	2.00%
Intersegment Sales [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 174	$ 195	$ 373	$ 380
Sales percentage	13.00%	14.00%	14.00%	13.00%
Intersegment Sales [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 259	$ 254	$ 505	$ 491
Sales percentage	10.00%	10.00%	10.00%	9.00%
Intersegment Sales [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 31	$ 31	$ 62	$ 70
Sales percentage	1.00%	1.00%	1.00%	1.00%
Operating Segments [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,534	$ 2,913	$ 5,237	$ 5,903
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,294	$ 1,427	$ 2,577	$ 2,989
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,516	$ 2,588	$ 5,013	$ 5,177
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,979	$ 2,748	$ 5,834	$ 5,269
Sales percentage	100.00%	100.00%	100.00%	100.00%