Inventoried Costs, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Inventory [Line Items]
Inventory for Long-Term Contracts or Programs, Gross	$ 647	$ 574
Inventory, Raw Materials, Net of Reserves	338	325
Contracts in process	72	31
Inventory, Finished Goods, Net of Reserves	52	48
Product inventory:	462	404
Inventoried costs, net	1,109	978
Space Systems
Inventory [Line Items]
Inventory Write-down	$ 43	$ 45