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Inventoried Costs, Net (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Production costs of contracts in process $ 476 $ 402
General and administrative expenses 31 16
Inventoried costs 507 418
Progress and performance-based payments received (41) (41)
Inventoried costs, net of progress payments 466 377
Product inventory 317 277
Inventory, Net $ 783 $ 654