Business and Organization	12 Months Ended
Business and Organization	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Organization	Business and Organization Starwood Property Trust, Inc. (“STWD” and, together with its subsidiaries, “we” or the “Company”) is a Maryland corporation that commenced operations in August 2009, upon the completion of our initial public offering. We are focused primarily on originating, acquiring, financing and managing mortgage loans and other real estate investments in the United States (“U.S.”), Europe and Australia. As market conditions change over time, we may adjust our strategy to take advantage of changes in interest rates and credit spreads as well as economic and credit conditions. We have four reportable business segments as of December 31, 2021 and we refer to the investments within these segments as our target assets: •Real estate commercial and residential lending (the “Commercial and Residential Lending Segment”)—engages primarily in originating, acquiring, financing and managing commercial first mortgages, non-agency residential mortgages (“residential loans”), subordinated mortgages, mezzanine loans, preferred equity, commercial mortgage-backed securities (“CMBS”), residential mortgage-backed securities (“RMBS”) and other real estate and real estate-related debt investments in the U.S., Europe and Australia (including distressed or non-performing loans). Our residential loans are secured by a first mortgage lien on residential property and primarily consist of non-agency residential loans that are not guaranteed by any U.S. Government agency or federally chartered corporation. •Infrastructure lending (the “Infrastructure Lending Segment”)—engages primarily in originating, acquiring, financing and managing infrastructure debt investments. •Real estate property (the “Property Segment”)—engages primarily in acquiring and managing equity interests in stabilized commercial real estate properties, including multifamily properties and commercial properties subject to net leases, that are held for investment. •Real estate investing and servicing (the “Investing and Servicing Segment”)—includes (i) a servicing business in the U.S. that manages and works out problem assets, (ii) an investment business that selectively acquires and manages unrated, investment grade and non-investment grade rated CMBS, including subordinated interests of securitization and resecuritization transactions, (iii) a mortgage loan business which originates conduit loans for the primary purpose of selling these loans into securitization transactions and (iv) an investment business that selectively acquires commercial real estate assets, including properties acquired from CMBS trusts. Our segments exclude the consolidation of securitization variable interest entities (“VIEs”). We are organized and conduct our operations to qualify as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended (the “Code”). As such, we will generally not be subject to U.S. federal corporate income tax on that portion of our net income that is distributed to stockholders if we distribute at least 90% of our taxable income to our stockholders by prescribed dates and comply with various other requirements. We are organized as a holding company and conduct our business primarily through our various wholly-owned subsidiaries. We are externally managed and advised by SPT Management, LLC (our “Manager”) pursuant to the terms of a management agreement. Our Manager is controlled by Barry Sternlicht, our Chairman and Chief Executive Officer. Our Manager is an affiliate of Starwood Capital Group Global L.P., a privately-held private equity firm founded by Mr. Sternlicht.