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Acquisition, Dispositions, Goodwill and Intangible Assets (Goodwill) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)
Goodwill [Line Items]
Goodwill - Beginning Balance	$ 54,285
Goodwill Resulting from Business Combinations	82
Goodwill - Foreign Currency Translation and Other	(102)
Goodwill - Ending Balance	54,265
Collins Aerospace Systems [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	31,571
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	(98)
Goodwill - Ending Balance	31,473
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	9,522
Goodwill Resulting from Business Combinations	30
Goodwill - Foreign Currency Translation and Other	0
Goodwill - Ending Balance	9,552
Goodwill, Transfers	282
Raytheon Missiles & Defense
Goodwill [Line Items]
Goodwill - Beginning Balance	11,608
Goodwill Resulting from Business Combinations	52
Goodwill - Foreign Currency Translation and Other	0
Goodwill - Ending Balance	11,660
Goodwill, Transfers	(282)
Total Segments [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	54,264
Goodwill Resulting from Business Combinations	82
Goodwill - Foreign Currency Translation and Other	(98)
Goodwill - Ending Balance	54,248
Eliminations and other [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	21
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	(4)
Goodwill - Ending Balance	$ 17

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975

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+ References

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