Acquisition, Dispositions, Goodwill and Intangible Assets (Goodwill) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Goodwill [Line Items]
Goodwill - Beginning Balance	$ 53,840
Goodwill - Acquisitions and Divestitures	0
Goodwill, Translation and Purchase Accounting Adjustments	64
Goodwill - Ending Balance	53,904
Collins Aerospace [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	30,719
Goodwill - Acquisitions and Divestitures	0
Goodwill, Translation and Purchase Accounting Adjustments	65
Goodwill - Ending Balance	30,784
Pratt & Whitney [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	1,563
Goodwill - Acquisitions and Divestitures	0
Goodwill, Translation and Purchase Accounting Adjustments	0
Goodwill - Ending Balance	1,563
Raytheon Intelligence & Space [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	9,841
Goodwill - Acquisitions and Divestitures	0
Goodwill, Translation and Purchase Accounting Adjustments	0
Goodwill - Ending Balance	9,841
Raytheon Missiles & Defense
Goodwill [Line Items]
Goodwill - Beginning Balance	11,700
Goodwill - Acquisitions and Divestitures	0
Goodwill, Translation and Purchase Accounting Adjustments	(1)
Goodwill - Ending Balance	11,699
Total Segments [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	53,823
Goodwill - Acquisitions and Divestitures	0
Goodwill, Translation and Purchase Accounting Adjustments	64
Goodwill - Ending Balance	53,887
Eliminations and other [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	17
Goodwill - Acquisitions and Divestitures	0
Goodwill, Translation and Purchase Accounting Adjustments	0
Goodwill - Ending Balance	$ 17