Segment Information Segment Sales (Details 5) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenues	$ 41,954	$ 41,033	$ 39,290
Operating Segments [Member] | Aeronautics Systems
Segment Reporting Information [Line Items]
Revenues	12,992	12,396	11,164
Operating Segments [Member] | Defense Systems
Segment Reporting Information [Line Items]
Revenues	8,002	7,399	7,185
Operating Segments [Member] | Mission Systems [Member]
Segment Reporting Information [Line Items]
Revenues	12,506	11,399	10,895
Operating Segments [Member] | Space Systems
Segment Reporting Information [Line Items]
Revenues	10,771	11,731	11,873
Intersegment Sales
Segment Reporting Information [Line Items]
Revenues	2,317	1,892	1,827
Intersegment Sales | Aeronautics Systems
Segment Reporting Information [Line Items]
Revenues	167	132	139
Intersegment Sales | Defense Systems
Segment Reporting Information [Line Items]
Revenues	210	171	151
Intersegment Sales | Mission Systems [Member]
Segment Reporting Information [Line Items]
Revenues	1,434	1,177	1,054
Intersegment Sales | Space Systems
Segment Reporting Information [Line Items]
Revenues	$ 506	$ 412	$ 483