Acquisition, Dispositions, Goodwill and Intangible Assets (Goodwill) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Goodwill [Line Items]
Goodwill - Beginning Balance	$ 54,436
Goodwill Resulting from Business Combinations	20
Goodwill - Foreign Currency Translation and Other	(140)
Goodwill - Ending Balance	54,316
Collins Aerospace Systems [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	31,384
Goodwill Resulting from Business Combinations	(1)
Goodwill - Foreign Currency Translation and Other	(139)
Goodwill - Ending Balance	31,244
Pratt & Whitney [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	1,563
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	0
Goodwill - Ending Balance	1,563
Raytheon Intelligence & Space [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	9,813
Goodwill Resulting from Business Combinations	21
Goodwill - Foreign Currency Translation and Other	0
Goodwill - Ending Balance	9,834
Raytheon Missiles & Defense
Goodwill [Line Items]
Goodwill - Beginning Balance	11,659
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	(1)
Goodwill - Ending Balance	11,658
Total Segments [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	54,419
Goodwill Resulting from Business Combinations	20
Goodwill - Foreign Currency Translation and Other	(140)
Goodwill - Ending Balance	54,299
Eliminations and other [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	17
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	0
Goodwill - Ending Balance	$ 17