Document and Entity Information	3 Months Ended
	Mar. 31, 2020 shares
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Registrant Name	RAYTHEON TECHNOLOGIES CORPORATION
Entity Central Index Key	0000101829
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	1-812
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	06-0570975
Entity Address, Address Line One	870 Winter Street,
Entity Address, City or Town	Waltham,
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02451
City Area Code	(781)
Local Phone Number	522-3000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	866,160,621
Entity Address, Country	US
Entity Information, Former Legal or Registered Name	United Technologies Corporation
Former Address [Member]
Entity Address, Address Line One	10 Farm Springs Road
Entity Address, City or Town	Farmington
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06032
Common Stock [Member]
Title of 12(b) Security	Common Stock ($1 par value)
Trading Symbol	RTX
Security Exchange Name	NYSE
Notes 2.150% Due 2030 [Member]
Title of 12(b) Security	2.150% Notes due 2030
Trading Symbol	RTX 30
Security Exchange Name	NYSE
Floating Rate Notes Due2020 [Member]
Title of 12(b) Security	Floating Rate Notes due 2020
Trading Symbol	RTX 20B
Security Exchange Name	NYSE