Residential Consumer Loans - Schedule of Geographic Concentration of Residential Consumer Loans (Details) - Geographic Concentration Risk - Loan Benchmark	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Concentration Risk [Line Items]
Concentration risk (as a percent)	100.00%	100.00%
Securitized Re-Performing Loans
Concentration Risk [Line Items]
Concentration risk (as a percent)	0.00%	100.00%
Securitized Re-Performing Loans | California
Concentration Risk [Line Items]
Concentration risk (as a percent)	0.00%	14.00%
Securitized Re-Performing Loans | Florida
Concentration Risk [Line Items]
Concentration risk (as a percent)	0.00%	10.00%
Securitized Re-Performing Loans | Texas
Concentration Risk [Line Items]
Concentration risk (as a percent)	0.00%	3.00%
Securitized Re-Performing Loans | Washington
Concentration Risk [Line Items]
Concentration risk (as a percent)	0.00%	2.00%
Securitized Re-Performing Loans | New York
Concentration Risk [Line Items]
Concentration risk (as a percent)	0.00%	11.00%
Securitized Re-Performing Loans | Colorado
Concentration Risk [Line Items]
Concentration risk (as a percent)	0.00%	1.00%
Securitized Re-Performing Loans | Illinois
Concentration Risk [Line Items]
Concentration risk (as a percent)		6.00%
Securitized Re-Performing Loans | New Jersey
Concentration Risk [Line Items]
Concentration risk (as a percent)		7.00%
Securitized Re-Performing Loans | Maryland
Concentration Risk [Line Items]
Concentration risk (as a percent)		5.00%
Securitized Re-Performing Loans | Other States
Concentration Risk [Line Items]
Concentration risk (as a percent)	0.00%	41.00%
Held-for-Sale
Concentration Risk [Line Items]
Concentration risk (as a percent)	100.00%	100.00%
Held-for-Sale | California
Concentration Risk [Line Items]
Concentration risk (as a percent)	28.00%	26.00%
Held-for-Sale | Florida
Concentration Risk [Line Items]
Concentration risk (as a percent)	8.00%	5.00%
Held-for-Sale | Texas
Concentration Risk [Line Items]
Concentration risk (as a percent)	6.00%	8.00%
Held-for-Sale | Washington
Concentration Risk [Line Items]
Concentration risk (as a percent)	5.00%	12.00%
Held-for-Sale | New York
Concentration Risk [Line Items]
Concentration risk (as a percent)	5.00%	1.00%
Held-for-Sale | Colorado
Concentration Risk [Line Items]
Concentration risk (as a percent)	3.00%	6.00%
Held-for-Sale | Illinois
Concentration Risk [Line Items]
Concentration risk (as a percent)		3.00%
Held-for-Sale | New Jersey
Concentration Risk [Line Items]
Concentration risk (as a percent)		2.00%
Held-for-Sale | Maryland
Concentration Risk [Line Items]
Concentration risk (as a percent)		0.00%
Held-for-Sale | Other States
Concentration Risk [Line Items]
Concentration risk (as a percent)	45.00%	37.00%
Held-for- Investment
Concentration Risk [Line Items]
Concentration risk (as a percent)	100.00%	100.00%
Held-for- Investment | California
Concentration Risk [Line Items]
Concentration risk (as a percent)	29.00%	31.00%
Held-for- Investment | Florida
Concentration Risk [Line Items]
Concentration risk (as a percent)	7.00%	7.00%
Held-for- Investment | Texas
Concentration Risk [Line Items]
Concentration risk (as a percent)	9.00%	10.00%
Held-for- Investment | Washington
Concentration Risk [Line Items]
Concentration risk (as a percent)	8.00%	8.00%
Held-for- Investment | New York
Concentration Risk [Line Items]
Concentration risk (as a percent)	2.00%	2.00%
Held-for- Investment | Colorado
Concentration Risk [Line Items]
Concentration risk (as a percent)	5.00%	6.00%
Held-for- Investment | Illinois
Concentration Risk [Line Items]
Concentration risk (as a percent)		2.00%
Held-for- Investment | New Jersey
Concentration Risk [Line Items]
Concentration risk (as a percent)		2.00%
Held-for- Investment | Maryland
Concentration Risk [Line Items]
Concentration risk (as a percent)		1.00%
Held-for- Investment | Other States
Concentration Risk [Line Items]
Concentration risk (as a percent)	40.00%	31.00%