Goodwill and Other Purchased Intangible Assets Amounts in Paragraphs - Goodwill and Other Purchased Intangible Assets (Details 4) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Amortization of Intangible Assets	$ 80	$ 197	$ 204
Aeronautics Systems
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss	417	417
Space Systems
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss	$ 153	$ 153