SCHEDULE IV - MORTGAGE LOANS ON REAL ESTATE (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) loan	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount	$ 16,089,510,000	$ 12,696,220,000	$ 11,370,323,000	$ 12,856,934,000
Residential Loans Held for Investment
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount	10,064,276,000
Principal Amount Subject to Delinquent Principal or Interest	126,390,000
Residential consumer loans, held-for-sale, at fair value
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount	1,013,547,000
Principal Amount Subject to Delinquent Principal or Interest	$ 0
Residential consumer loans, held-for-sale, at fair value | Hybrid ARM loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	154
Carrying Amount	$ 173,913,000
Principal Amount Subject to Delinquent Principal or Interest	$ 0
Residential consumer loans, held-for-sale, at fair value | Hybrid ARM loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.63%
Residential consumer loans, held-for-sale, at fair value | Hybrid ARM loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.25%
Residential consumer loans, held-for-sale, at fair value | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	736
Carrying Amount	$ 839,634,000
Principal Amount Subject to Delinquent Principal or Interest	$ 0
Residential consumer loans, held-for-sale, at fair value | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.25%
Residential consumer loans, held-for-sale, at fair value | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	9.75%
Residential investor term loans, at fair value
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount	$ 158,637,000
Principal Amount Subject to Delinquent Principal or Interest	$ 33,065,000
Residential investor term loans, at fair value | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	101
Carrying Amount	$ 158,637,000
Principal Amount Subject to Delinquent Principal or Interest	$ 33,065,000
Residential investor term loans, at fair value | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	5.95%
Residential investor term loans, at fair value | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.50%
Single Family Rental Loans Held for Investment at Fair Value
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount	$ 2,485,069,000
Principal Amount Subject to Delinquent Principal or Interest	194,143,000
Bridge at Redwood
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount	1,120,282,000
Principal Amount Subject to Delinquent Principal or Interest	129,229,000
Real estate loans, federal income tax basis	$ 1,760,000,000
Bridge at Redwood | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	272
Carrying Amount	$ 579,300,000
Principal Amount Subject to Delinquent Principal or Interest	$ 7,741,000
Bridge at Redwood | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.30%
Bridge at Redwood | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.50%
Bridge at Redwood | Floating ARM Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	390
Carrying Amount	$ 540,982,000
Principal Amount Subject to Delinquent Principal or Interest	$ 121,488,000
Bridge at Redwood | Floating ARM Loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.10%
Bridge at Redwood | Floating ARM Loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	11.80%
Consolidated Agency Multifamily Loans Held-for-Investment
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount	$ 424,597,000
Principal Amount Subject to Delinquent Principal or Interest	$ 0
Consolidated Agency Multifamily Loans Held-for-Investment | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	28
Carrying Amount	$ 424,597,000
Principal Amount Subject to Delinquent Principal or Interest	$ 0
Consolidated Agency Multifamily Loans Held-for-Investment | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.25%
Consolidated Agency Multifamily Loans Held-for-Investment | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.25%
Sequoia Choice Securitization Entities | Residential Loans Held for Investment | ARMS loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	897
Carrying Amount	$ 104,369,000
Principal Amount Subject to Delinquent Principal or Interest	$ 1,903,000
Sequoia Choice Securitization Entities | Residential Loans Held for Investment | ARMS loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.25%
Sequoia Choice Securitization Entities | Residential Loans Held for Investment | ARMS loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.75%
Sequoia Choice Securitization Entities | Residential Loans Held for Investment | Hybrid ARM loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	426
Carrying Amount	$ 379,061,000
Principal Amount Subject to Delinquent Principal or Interest	$ 621,000
Sequoia Choice Securitization Entities | Residential Loans Held for Investment | Hybrid ARM loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.88%
Sequoia Choice Securitization Entities | Residential Loans Held for Investment | Hybrid ARM loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.88%
Sequoia Choice Securitization Entities | Residential Loans Held for Investment | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	9,782
Carrying Amount	$ 8,336,124,000
Principal Amount Subject to Delinquent Principal or Interest	$ 16,956,000
Sequoia Choice Securitization Entities | Residential Loans Held for Investment | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.88%
Sequoia Choice Securitization Entities | Residential Loans Held for Investment | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.50%
Freddie Mac SLST
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Real estate loans, federal income tax basis	$ 0
Freddie Mac SLST | Residential Loans Held for Investment | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	9,760
Carrying Amount	$ 1,244,722,000
Principal Amount Subject to Delinquent Principal or Interest	$ 106,910,000
Freddie Mac SLST | Residential Loans Held for Investment | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.00%
Freddie Mac SLST | Residential Loans Held for Investment | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	11.00%
Term at CAFL | Single Family Rental Loans Held for Investment at Fair Value | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	856
Carrying Amount	$ 2,485,069,000
Principal Amount Subject to Delinquent Principal or Interest	$ 194,143,000
Term at CAFL | Single Family Rental Loans Held for Investment at Fair Value | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.81%
Term at CAFL | Single Family Rental Loans Held for Investment at Fair Value | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.24%
Term at CAFL | Bridge at Redwood
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount	$ 823,103,000
Principal Amount Subject to Delinquent Principal or Interest	$ 20,964,000
Term at CAFL | Bridge at Redwood | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	1,099
Carrying Amount	$ 375,792,000
Principal Amount Subject to Delinquent Principal or Interest	$ 8,695,000
Term at CAFL | Bridge at Redwood | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.75%
Term at CAFL | Bridge at Redwood | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.00%
Term at CAFL | Bridge at Redwood | Floating ARM Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	1,197
Carrying Amount	$ 447,311,000
Principal Amount Subject to Delinquent Principal or Interest	$ 12,269,000
Term at CAFL | Bridge at Redwood | Floating ARM Loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.10%
Term at CAFL | Bridge at Redwood | Floating ARM Loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	13.67%
Held-for- Investment at Legacy Sequoia
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Real estate loans, federal income tax basis	$ 0