Segment Information (Unaudited) Sales by Customer Type (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue, Major Customer [Line Items]
Sales	$ 8,971	$ 8,720	$ 26,569	$ 27,028
Sales percentage	100.00%	100.00%	100.00%	100.00%
US Government
Revenue, Major Customer [Line Items]
Sales	$ 7,654	$ 7,452	$ 22,731	$ 23,007
Sales percentage	86.00%	85.00%	86.00%	85.00%
US Government | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,138	$ 2,312	$ 6,564	$ 7,366
Sales percentage	85.00%	85.00%	85.00%	85.00%
US Government | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 820	$ 877	$ 2,369	$ 2,749
Sales percentage	62.00%	62.00%	61.00%	63.00%
US Government | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,729	$ 1,756	$ 5,325	$ 5,491
Sales percentage	71.00%	72.00%	72.00%	71.00%
US Government | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,967	$ 2,507	$ 8,473	$ 7,401
Sales percentage	94.00%	94.00%	94.00%	93.00%
International(2)
Revenue, Major Customer [Line Items]
Sales	$ 1,210	$ 1,185	$ 3,506	$ 3,751
Sales percentage	13.00%	14.00%	13.00%	14.00%
International(2) | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 341	$ 360	$ 1,012	$ 1,110
Sales percentage	13.00%	13.00%	13.00%	13.00%
International(2) | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 312	$ 316	$ 933	$ 1,002
Sales percentage	23.00%	22.00%	24.00%	23.00%
International(2) | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 452	$ 417	$ 1,300	$ 1,338
Sales percentage	18.00%	17.00%	17.00%	18.00%
International(2) | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 105	$ 92	$ 261	$ 301
Sales percentage	3.00%	3.00%	3.00%	4.00%
Other Customers [Member]
Revenue, Major Customer [Line Items]
Sales	$ 107	$ 83	$ 332	$ 270
Sales percentage	1.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 0	$ 5	$ 17	$ 15
Sales percentage	0.00%	0.00%	0.00%	0.00%
Other Customers [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 19	$ 10	$ 53	$ 61
Sales percentage	1.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 25	$ 19	$ 89	$ 49
Sales percentage	1.00%	1.00%	1.00%	1.00%
Other Customers [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 63	$ 49	$ 173	$ 145
Sales percentage	2.00%	2.00%	2.00%	2.00%
Intersegment Sales [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 58	$ 48	$ 181	$ 137
Sales percentage	2.00%	2.00%	2.00%	2.00%
Intersegment Sales [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 194	$ 206	$ 567	$ 586
Sales percentage	14.00%	15.00%	14.00%	13.00%
Intersegment Sales [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 250	$ 244	$ 755	$ 735
Sales percentage	10.00%	10.00%	10.00%	10.00%
Intersegment Sales [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 28	$ 33	$ 90	$ 103
Sales percentage	1.00%	1.00%	1.00%	1.00%
Operating Segments [Member] | Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,537	$ 2,725	$ 7,774	$ 8,628
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,345	$ 1,409	$ 3,922	$ 4,398
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,456	$ 2,436	$ 7,469	$ 7,613
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 3,163	$ 2,681	$ 8,997	$ 7,950
Sales percentage	100.00%	100.00%	100.00%	100.00%