Debt Obligations - Summary of Debt (Details) - USD ($)	3 Months Ended
Debt Obligations - Summary of Debt (Details) - USD ($)	Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Outstanding Principal	$ 3,031,281,000
Unamortized debt issuance costs	$ 6,516,000	$ 2,811,000
Average haircut weighted by outstanding face amount of collateral	32.80%	34.90%
Average haircut weighted by outstanding face amount of collateral if maximum amount is borrowed	30.50%	32.10%
Commercial Real Estate Loans
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 7,100,000	$ 6,200,000
Minimum
Debt Instrument [Line Items]
Weighted average life (Years)	1 year
Maximum
Debt Instrument [Line Items]
Weighted average life (Years)	2 years 4 months 24 days
Total Debt \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	$ 6,162,222,000
Outstanding Principal	3,031,281,000
Carrying value	$ 3,024,168,000
Weighted average funding cost	6.40%
Secured Financing Agreements \| Secured financing agreements, net
Debt Instrument [Line Items]
Carrying value	$ 3,024,168,000	2,798,674,000
Secured Financing Agreements \| KREF Lending IX \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	460,877,000
Outstanding Principal	437,983,000
Carrying value	$ 437,428,000	437,002,000
Weighted average funding cost	6.20%
Outstanding Principal	$ 600,156,000
Carrying value	596,989,000
Secured Financing Agreements \| KREF Lending XII \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	350,000,000
Outstanding Principal	99,071,000
Carrying value	$ 99,042,000	99,233,000
Weighted average funding cost	5.70%
Outstanding Principal	$ 149,396,000
Carrying value	147,375,000
Secured Financing Agreements \| KREF Lending XV \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	300,000,000
Outstanding Principal	121,616,000
Carrying value	$ 120,680,000	0
Weighted average funding cost	5.80%
Outstanding Principal	$ 152,020,000
Carrying value	148,948,000
Secured Financing Agreements \| KREF Lending V \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	100,720,000
Outstanding Principal	100,720,000
Carrying value	$ 100,679,000	177,408,000
Weighted average funding cost	7.00%
Outstanding Principal	$ 220,203,000
Carrying value	219,384,000
Secured Financing Agreements \| Wells Fargo \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	1,000,000,000
Outstanding Principal	760,823,000
Carrying value	$ 759,587,000	650,621,000
Weighted average funding cost	6.00%
Outstanding Principal	$ 1,093,651,000
Carrying value	1,063,930,000
Secured Financing Agreements \| Morgan Stanley \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	600,000,000
Outstanding Principal	270,397,000
Carrying value	$ 268,996,000	276,875,000
Weighted average funding cost	6.60%
Outstanding Principal	$ 398,197,000
Carrying value	397,405,000
Secured Financing Agreements \| Goldman Sachs \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	400,000,000
Outstanding Principal	108,973,000
Carrying value	$ 108,218,000	107,973,000
Weighted average funding cost	7.00%
Outstanding Principal	$ 204,497,000
Carrying value	203,353,000
Secured Financing Agreements \| BMO Facility \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	300,000,000
Outstanding Principal	74,899,000
Carrying value	$ 74,809,000	74,727,000
Weighted average funding cost	6.30%
Outstanding Principal	$ 94,953,000
Carrying value	94,413,000
Secured Financing Agreements \| HSBC Facility \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	500,000,000
Outstanding Principal	$ 0
Weighted average funding cost	0.00%
Outstanding Principal	$ 0
Carrying value	0
Carrying Value	(9,000)	(12,000)
Secured Financing Agreements \| KREF Lending XIII \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	265,625,000
Outstanding Principal	195,198,000
Carrying value	$ 194,025,000	193,285,000
Weighted average funding cost	7.60%
Outstanding Principal	$ 229,644,000
Carrying value	225,588,000
Secured Financing Agreements \| KREF Lending XIV \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	125,000,000
Outstanding Principal	$ 58,519,000
Weighted average funding cost	7.40%
Outstanding Principal	$ 73,148,000
Carrying value	71,595,000
Carrying Value	57,846,000	47,761,000
Secured Financing Agreements \| KREF Lending XI \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	100,000,000
Outstanding Principal	100,000,000
Carrying value	$ 99,979,000	99,967,000
Weighted average funding cost	7.10%
Outstanding Principal	$ 125,000,000
Carrying value	124,023,000
Term Loan Facility \| KREF Lending VII \| Secured financing agreements, net
Debt Instrument [Line Items]
Maximum Facility Size	1,000,000,000
Outstanding Principal	613,082,000
Carrying value	$ 612,888,000	553,834,000
Weighted average funding cost	6.40%
Outstanding Principal	$ 792,538,000
Carrying value	783,027,000
Revolving Credit Agreement \| Secured financing agreements, net
Debt Instrument [Line Items]
Outstanding Principal	90,000,000
Carrying value	$ 90,000,000	$ 80,000,000
Weighted average funding cost	6.50%
Revolving Credit Agreement \| Secured financing agreements, net \| Minimum
Debt Instrument [Line Items]
Maximum Facility Size	$ 610,000,000
Revolving Credit Agreement \| Secured financing agreements, net \| Maximum
Debt Instrument [Line Items]
Maximum Facility Size	660,000,000
Revolving Credit Agreement \| Morgan Stanley \| Secured financing agreements, net
Debt Instrument [Line Items]
Deferred financing/debt issuance costs	$ 6,500,000
Loan Facility \| KREF Lending VII \| Secured financing agreements, net
Debt Instrument [Line Items]
Weighted average life (Years)	5 years
Loan Facility \| KREF \| Secured financing agreements, net
Debt Instrument [Line Items]
Weighted average life (Years)	2 years

KKR Real Estate Finance Trust Inc. 10-Q