Information on Business Segments - Total Assets and Customer Advances and Amounts In Excess Of Costs Incurred For Each Business Segment (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Assets	$ 52,456	$ 52,880
Operating Segments
Segment Reporting Information [Line Items]
Assets	42,951	42,182
Operating Segments | Aeronautics
Segment Reporting Information [Line Items]
Assets	13,167	12,055
Operating Segments | Missiles and Fire Control
Segment Reporting Information [Line Items]
Assets	5,703	5,788
Operating Segments | Rotary and Mission Systems
Segment Reporting Information [Line Items]
Assets	17,521	17,988
Operating Segments | Space
Segment Reporting Information [Line Items]
Assets	6,560	6,351
Corporate assets
Segment Reporting Information [Line Items]
Assets	$ 9,505	$ 10,698