Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	Income TaxesAs a result of the Separation Transactions, the Distributions and the Raytheon Merger, coupled with the impact of the wide range of uncertainties of the COVID-19 pandemic, rather than applying a forecasted annualized effective tax rate, the Company recorded its first quarter tax expense based upon income and tax items as they occurred in the quarter. The increase in the effective tax rate for the quarter ended March 31, 2020 is primarily the result of tax charges in connection with the Company’s Separation Transactions, including the impairment of deferred tax assets not expected to be utilized. We conduct business globally and, as a result, Raytheon Technologies or one or more of our subsidiaries files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. In the normal course of business we are subject to examination by taxing authorities throughout the world, including such major jurisdictions as Australia, Belgium, Brazil, Canada, China, France, Germany, Hong Kong, India, Italy, Japan, Mexico, Netherlands, Poland, Singapore, South Korea, Spain, Switzerland, the United Kingdom, and the United States. With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations for years before 2009.In the ordinary course of business, there is inherent uncertainty in quantifying our income tax positions. We assess our income tax positions and record tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances, and information available at the reporting date. As a result of the Separation Transactions and the Distributions in the second quarter of 2020, we expect to transfer unrecognized tax benefits to Carrier and Otis of approximately $440 million in the second quarter including certain amounts related to pending tax litigation in Germany as further discussed in Note 16, Contingent Liabilities. Pursuant to the terms of the separation agreements, certain other unrecognized tax benefits retained by Raytheon Technologies will be subject to indemnification. Additionally, it is reasonably possible that a net reduction within the range of $100 million to $300 million of unrecognized tax benefits may occur within the next 12 months as a result of worldwide uncertain tax positions, the revaluation of current uncertain tax positions arising from the issuance of legislation, regulatory or other guidance or developments in examinations, in appeals, or in the courts, or the closure of tax statutes