Segment Information Intersegment Sales and Operating Income (Details 6) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Sales	$ 41,954	$ 41,033	$ 39,290
Operating income	4,511	4,370	2,537
Intersegment Sales
Segment Reporting Information [Line Items]
Sales	2,317	1,892	1,827
Operating income	317	260	247
Intersegment Sales | Aeronautics Systems
Segment Reporting Information [Line Items]
Sales	167	132	139
Operating income	15	13	11
Intersegment Sales | Defense Systems
Segment Reporting Information [Line Items]
Sales	210	171	151
Operating income	24	22	17
Intersegment Sales | Mission Systems
Segment Reporting Information [Line Items]
Sales	1,434	1,177	1,054
Operating income	224	181	167
Intersegment Sales | Space Systems
Segment Reporting Information [Line Items]
Sales	506	412	483
Operating income	$ 54	$ 44	$ 52