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, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Assets	$ 52,880	$ 50,873
Operating Segments
Segment Reporting Information [Line Items]
Assets	42,182	39,862
Operating Segments | Aeronautics
Segment Reporting Information [Line Items]
Assets	12,055	10,756
Operating Segments | Missiles and Fire Control
Segment Reporting Information [Line Items]
Assets	5,788	5,243
Operating Segments | Rotary and Mission Systems
Segment Reporting Information [Line Items]
Assets	17,988	17,664
Operating Segments | Space
Segment Reporting Information [Line Items]
Assets	6,351	6,199
Corporate assets
Segment Reporting Information [Line Items]
Assets	$ 10,698	$ 11,011