Inventory (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Inventory [Line Items]
Contracts in process	$ 973	$ 647
Inventory, Raw Materials, Net of Reserves	365	338
Inventory, Work in Process, Net of Reserves	103	72
Inventory, Finished Goods, Net of Reserves	63	52
Total product inventory	531	462
Inventoried costs, net	$ 1,504	$ 1,109