Segment Information Sales by Geographic Location (Details 4) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 41,954	$ 41,033	$ 39,290
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 35,964	$ 36,033	$ 34,385
Sales percentage	86.00%	88.00%	88.00%
Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 1,919	$ 1,552	$ 1,568
Sales percentage	4.00%	4.00%	4.00%
All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 785	$ 611	$ 882
Sales percentage	2.00%	1.00%	2.00%
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 3,286	$ 2,837	$ 2,455
Sales percentage	8.00%	7.00%	6.00%
Intersegment Sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 2,317	$ 1,892	$ 1,827
Aeronautics Systems | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 10,500	$ 10,386	$ 9,414
Sales percentage	82.00%	85.00%	85.00%
Aeronautics Systems | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 920	$ 744	$ 712
Sales percentage	7.00%	6.00%	7.00%
Aeronautics Systems | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 85	$ 37	$ 36
Sales percentage	1.00%	0.00%	0.00%
Aeronautics Systems | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 1,320	$ 1,097	$ 863
Sales percentage	10.00%	9.00%	8.00%
Aeronautics Systems | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 12,992	$ 12,396	$ 11,164
Aeronautics Systems | Intersegment Sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	167	132	139
Defense Systems | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 6,455	$ 6,127	$ 5,775
Sales percentage	83.00%	85.00%	82.00%
Defense Systems | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 374	$ 294	$ 314
Sales percentage	5.00%	4.00%	4.00%
Defense Systems | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 207	$ 191	$ 471
Sales percentage	2.00%	3.00%	7.00%
Defense Systems | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 756	$ 616	$ 474
Sales percentage	10.00%	8.00%	7.00%
Defense Systems | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 8,002	$ 7,399	$ 7,185
Defense Systems | Intersegment Sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	210	171	151
Mission Systems [Member] | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 8,947	$ 8,413	$ 8,084
Sales percentage	81.00%	82.00%	82.00%
Mission Systems [Member] | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 550	$ 472	$ 460
Sales percentage	5.00%	5.00%	5.00%
Mission Systems [Member] | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 454	$ 347	$ 338
Sales percentage	4.00%	3.00%	3.00%
Mission Systems [Member] | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 1,121	$ 990	$ 959
Sales percentage	10.00%	10.00%	10.00%
Mission Systems [Member] | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 12,506	$ 11,399	$ 10,895
Mission Systems [Member] | Intersegment Sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	1,434	1,177	1,054
Space Systems | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 10,062	$ 11,107	$ 11,112
Sales percentage	98.00%	98.00%	98.00%
Space Systems | Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 75	$ 42	$ 82
Sales percentage	1.00%	1.00%	1.00%
Space Systems | All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 39	$ 36	$ 37
Sales percentage	0.00%	0.00%	0.00%
Space Systems | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 89	$ 134	$ 159
Sales percentage	1.00%	1.00%	1.00%
Space Systems | Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 10,771	$ 11,731	$ 11,873
Space Systems | Intersegment Sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 506	$ 412	$ 483