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SCHEDULE IV - LOANS AND OTHER LENDING INVESTMENTS (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 1,672,775
Carrying value of loans	12,615,006
Carrying Amount	12,377,806
Amount of loans extended	1,740,000
Federal income tax basis	$ 12,620,000
Threshold for reporting loans (as a percent)	3.00%
Bridge Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value of loans	$ 12,273,244
Carrying Amount	12,052,895
Bridge Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value of loans	12,273,244
Carrying Amount	12,052,895
Mezzanine Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	1,203,261
Carrying value of loans	248,457
Carrying Amount	238,441
Preferred Equity Investments | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	469,514
Carrying value of loans	85,741
Carrying Amount	78,930
Other Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value of loans	7,564
Carrying Amount	7,540
Multifamily | Bridge Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value of loans	10,789,936
Carrying Amount	$ 10,665,252
Multifamily | Bridge Loans | Loans less than 3% | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	3.00%
Multifamily | Bridge Loans | Loans less than 3% | Minimum | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	0.00%
Floor rate (as a percent)	0.10%
Multifamily | Bridge Loans | Loans less than 3% | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	12.00%
Multifamily | Bridge Loans | Loans less than 3% | Maximum | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	5.75%
Floor rate (as a percent)	5.36%
Multifamily | Mezzanine Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 1,203,261
Carrying value of loans	232,104
Carrying Amount	$ 223,008
Multifamily | Mezzanine Loans | Loans less than 3% | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	3.50%
Multifamily | Mezzanine Loans | Loans less than 3% | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	14.00%
Multifamily | Preferred Equity Investments | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 439,722
Carrying value of loans	75,941
Carrying Amount	$ 71,020
Multifamily | Preferred Equity Investments | Loans less than 3% | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	0.00%
Multifamily | Preferred Equity Investments | Loans less than 3% | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	16.00%
Single‑Family Rental | Bridge Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value of loans	$ 1,316,803
Carrying Amount	$ 1,301,522
Single‑Family Rental | Bridge Loans | Loans less than 3% | Minimum | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	0.00%
Floor rate (as a percent)	0.10%
Single‑Family Rental | Bridge Loans | Loans less than 3% | Maximum | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	6.25%
Floor rate (as a percent)	5.36%
Single‑Family Rental | Other Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value of loans	$ 7,564
Carrying Amount	$ 7,540
Single‑Family Rental | Other Loans | Loans less than 3% | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Floor rate (as a percent)	0.25%
Single‑Family Rental | Other Loans | Loans less than 3% | Minimum | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	3.98%
Single‑Family Rental | Other Loans | Loans less than 3% | Maximum | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	4.90%
Land | Bridge Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	0.00%
Carrying value of loans	$ 118,595
Carrying Amount	$ 40,726
Land | Bridge Loans | Loans less than 3% | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	4.00%
Floor rate (as a percent)	0.15%
Land | Mezzanine Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	0.00%
Carrying value of loans	$ 9,333
Carrying Amount	$ 9,333
Land | Preferred Equity Investments | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	0.00%
Carrying value of loans	$ 8,100
Carrying Amount	7,910
Office | Bridge Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value of loans	35,410
Carrying Amount	$ 35,268
Office | Bridge Loans | Loans less than 3% | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	3.50%
Retail | Bridge Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value of loans	$ 12,500
Carrying Amount	$ 10,127
Retail | Bridge Loans | Loans less than 3% | Minimum | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	3.50%
Floor rate (as a percent)	1.00%
Retail | Mezzanine Loans | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	12.00%
Prior Liens	$ 0
Carrying value of loans	7,020
Carrying Amount	$ 6,100
Retail | Mezzanine Loans | Loans less than 3% | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Base spread (as a percent)	3.50%
Floor rate (as a percent)	1.00%
Commercial | Preferred Equity Investments | Loans less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate (as a percent)	6.00%
Prior Liens	$ 29,792
Carrying value of loans	$ 1,700

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Amount of federal income tax basis of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 29
-Footnote 8
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Footnote 8))
-Publisher FASB
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Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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-Publisher SEC

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
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-Section 12
-Subsection 29
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
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Amount of prior lien on real estate securing mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 29
-Paragraph Column E
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
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-Name Accounting Standards Codification
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-Publisher FASB
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Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 310
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-Section S99
-Paragraph 1
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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