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[Member] KKR Real Estate FInance Trust Inc. 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losses Beginning balance Ending balance Beginning balance Ending balance Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Remaining authorized amount Common Stock, Remaining Authorized Amount Common Stock, Remaining Authorized Amount Basic (in shares) Weighted Average Number of Shares Outstanding, Basic New Jersey NEW JERSEY Schedule of Earnings (Loss) Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Director Director [Member] Related Party Transaction [Domain] Related Party Transaction [Domain] Subsequent Events [Abstract] Subsequent Events [Abstract] North Carolina NORTH CAROLINA Debt Disclosure [Abstract] Debt Disclosure [Abstract] Other Income Nonoperating Income (Expense) [Abstract] ATM Continuous Offering Program [Member] Continuous Offering Program [Member] Unamortized discount Debt Instrument, Unamortized Discount Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount 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[Member] Morgan Stanley Bank, N.A. [Member] Counterparty Name [Axis] Counterparty Name [Axis] Net income (loss) Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Management fee to related parties Management Fee To Affiliate Management Fee To Affiliate Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member]