Segment Information (Unaudited) Sales by Geographic Location (Details 4) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue, Geographic Location [Line Items]
Revenues	$ 10,351	$ 10,218	$ 19,819	$ 20,351
United States
Revenue, Geographic Location [Line Items]
Revenues	$ 8,950	$ 9,033	$ 17,132	$ 18,004
Sales percentage	87.00%	88.00%	87.00%	88.00%
Asia/Pacific
Revenue, Geographic Location [Line Items]
Revenues	$ 452	$ 377	$ 869	$ 736
Sales percentage	4.00%	4.00%	4.00%	4.00%
Europe
Revenue, Geographic Location [Line Items]
Revenues	$ 752	$ 667	$ 1,456	$ 1,343
Sales percentage	7.00%	7.00%	7.00%	7.00%
All other
Revenue, Geographic Location [Line Items]
Revenues	$ 197	$ 141	$ 362	$ 268
Sales percentage	2.00%	1.00%	2.00%	1.00%
Aeronautics Systems [Member] | United States
Revenue, Geographic Location [Line Items]
Revenues	$ 2,532	$ 2,611	$ 4,827	$ 5,199
Sales percentage	82.00%	86.00%	82.00%	86.00%
Aeronautics Systems [Member] | Asia/Pacific
Revenue, Geographic Location [Line Items]
Revenues	$ 226	$ 164	$ 426	$ 334
Sales percentage	8.00%	5.00%	8.00%	6.00%
Aeronautics Systems [Member] | Europe
Revenue, Geographic Location [Line Items]
Revenues	$ 301	$ 243	$ 570	$ 490
Sales percentage	10.00%	9.00%	10.00%	8.00%
Aeronautics Systems [Member] | All other
Revenue, Geographic Location [Line Items]
Revenues	$ 17	$ 8	$ 26	$ 15
Sales percentage	0.00%	0.00%	0.00%	0.00%
Aeronautics Systems [Member] | Intersegment sales
Revenue, Geographic Location [Line Items]
Revenues	$ 38	$ 34	$ 79	$ 66
Aeronautics Systems [Member] | Operating Segments [Member]
Revenue, Geographic Location [Line Items]
Revenues	3,114	3,060	5,928	6,104
Defense Systems [Member] | United States
Revenue, Geographic Location [Line Items]
Revenues	$ 1,633	$ 1,527	$ 3,104	$ 3,003
Sales percentage	84.00%	84.00%	84.00%	86.00%
Defense Systems [Member] | Asia/Pacific
Revenue, Geographic Location [Line Items]
Revenues	$ 79	$ 80	$ 160	$ 130
Sales percentage	4.00%	4.00%	4.00%	4.00%
Defense Systems [Member] | Europe
Revenue, Geographic Location [Line Items]
Revenues	$ 168	$ 164	$ 338	$ 296
Sales percentage	9.00%	10.00%	9.00%	8.00%
Defense Systems [Member] | All other
Revenue, Geographic Location [Line Items]
Revenues	$ 58	$ 43	$ 96	$ 80
Sales percentage	3.00%	2.00%	3.00%	2.00%
Defense Systems [Member] | Intersegment sales
Revenue, Geographic Location [Line Items]
Revenues	$ 53	$ 45	$ 98	$ 87
Defense Systems [Member] | Operating Segments [Member]
Revenue, Geographic Location [Line Items]
Revenues	1,991	1,859	3,796	3,596
Mission Systems [Member] | United States
Revenue, Geographic Location [Line Items]
Revenues	$ 2,311	$ 2,049	$ 4,308	$ 3,977
Sales percentage	82.00%	83.00%	81.00%	82.00%
Mission Systems [Member] | Asia/Pacific
Revenue, Geographic Location [Line Items]
Revenues	$ 132	$ 122	$ 260	$ 248
Sales percentage	5.00%	5.00%	5.00%	5.00%
Mission Systems [Member] | Europe
Revenue, Geographic Location [Line Items]
Revenues	$ 263	$ 226	$ 502	$ 481
Sales percentage	9.00%	9.00%	10.00%	10.00%
Mission Systems [Member] | All other
Revenue, Geographic Location [Line Items]
Revenues	$ 110	$ 79	$ 218	$ 152
Sales percentage	4.00%	3.00%	4.00%	3.00%
Mission Systems [Member] | Intersegment sales
Revenue, Geographic Location [Line Items]
Revenues	$ 341	$ 297	$ 676	$ 574
Mission Systems [Member] | Operating Segments [Member]
Revenue, Geographic Location [Line Items]
Revenues	3,157	2,773	5,964	5,432
Space Systems [Member] | United States
Revenue, Geographic Location [Line Items]
Revenues	$ 2,474	$ 2,846	$ 4,893	$ 5,825
Sales percentage	98.00%	98.00%	98.00%	98.00%
Space Systems [Member] | Asia/Pacific
Revenue, Geographic Location [Line Items]
Revenues	$ 15	$ 11	$ 23	$ 24
Sales percentage	1.00%	0.00%	0.00%	0.00%
Space Systems [Member] | Europe
Revenue, Geographic Location [Line Items]
Revenues	$ 20	$ 34	$ 46	$ 76
Sales percentage	1.00%	2.00%	2.00%	2.00%
Space Systems [Member] | All other
Revenue, Geographic Location [Line Items]
Revenues	$ 12	$ 11	$ 22	$ 21
Sales percentage	0.00%	0.00%	0.00%	0.00%
Space Systems [Member] | Intersegment sales
Revenue, Geographic Location [Line Items]
Revenues	$ 125	$ 100	$ 230	$ 205
Space Systems [Member] | Operating Segments [Member]
Revenue, Geographic Location [Line Items]
Revenues	$ 2,646	$ 3,002	$ 5,214	$ 6,151