Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2025
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The increase in the effective tax rate for the quarter and six months ended June 30, 2025, is primarily due to the absence of the reduction in a deferred tax liability related to the mitigation of future repatriation costs recorded in 2024, partially offset by an incremental benefit related to foreign-derived intangible income and foreign valuation allowance releases recorded in the quarter ended June 30, 2025. The increase in the effective tax rate for the six months ended June 30, 2025 is also due to the result of the tax effect of the increase in our estimated nondeductible TMA indemnity obligation payable to RTX recorded in the quarter ended March 31, 2025. On July 4, 2025, the One Big Beautiful Bill Act ("OBBBA") was enacted, which includes a broad range of tax reform provisions affecting businesses, including extending and modifying certain key Tax Cuts & Jobs Act provisions (both domestic and international). We are currently evaluating the tax impacts of this legislation; however, we do not expect it to have a material impact on our Condensed Consolidated Financial Statements. Otis conducts business globally and, as a result, Otis or one or more of its subsidiaries files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. In the ordinary course of business, Otis could be subject to examination by taxing authorities throughout the world, including such major jurisdictions as Austria, Belgium, Brazil, Canada, China, France, Germany, Hong Kong, India, Italy, Japan, Mexico, Netherlands, Portugal, South Korea, Spain, Switzerland, the United Kingdom and the U.S. With a few exceptions, Otis is no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations for years before 2015. A subsidiary of Otis lost a tax litigation case in Belgium in 2023 and decided not to appeal. Otis expects to receive the assessment for tax and interest in 2025. The associated tax and interest have been fully reserved. See Note 16, "Contingent Liabilities" for discussion regarding the German tax litigation.

The entire disclosure for income tax.

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