Acquisitions and Dispositions (Details) - USD ($) $ in Millions			1 Months Ended			12 Months Ended
	Oct. 18, 2023	Jul. 20, 2023	Dec. 31, 2021	Nov. 30, 2021	Jan. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Payments to Acquire Businesses and Interest in Affiliates						$ 0	$ 66	$ 1,088
Goodwill, Acquired During Period						(433)
Proceeds from Divestiture of Businesses and Interests in Affiliates						6	$ 94	$ 1,879
Raytheon Cybersecurity, Intelligence and Services (CIS) Business
Business Acquisition [Line Items]
Goodwill, Acquired During Period						430
Expected Proceeds from Divestiture of Business	$ 1,300
Disposal Group, Including Discontinued Operation, Assets						1,000
Disposal Group, Including Discontinued Operation, Liabilities						300
Disposal Group, Including Discontinued Operation, Goodwill and Intangible Assets						$ 700
Collins Actuation Systems Portfolio
Business Acquisition [Line Items]
Expected Proceeds from Divestiture of Business		$ 1,800
Raytheon Global Training and Services [Member]
Business Acquisition [Line Items]
Proceeds from Divestiture of Businesses and Interests in Affiliates			$ 900
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal			251
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, After Tax			135
Disposal Group, Not Discontinued Operation, Gain (Loss) on Non-Service Pension (Income) Expense			$ 12
Forcepoint [Member]
Business Acquisition [Line Items]
Proceeds from Divestiture of Businesses and Interests in Affiliates					$ 1,100
Flight Aware and SEAKR Engineering Inc.
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				$ 1,100
Goodwill, Acquired During Period				800
Finite-lived Intangible Assets Acquired				$ 300