Securitized Debt - Maturities of Long-Term Debt (Details) - Variable Interest Entities, Primary Beneficiary - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Securitized debt
Debt Instrument [Line Items]
Within One Year	$ 1,625,450	$ 1,636,544
One to Three Years	2,608,877	2,535,642
Three to Five Years	1,913,618	1,733,022
Greater Than Five Years	2,690,324	1,949,240
Total	8,838,269	7,854,448
Securitized Loans | Non-Agency RMBS
Debt Instrument [Line Items]
Within One Year	410	640
One to Three Years	409	523
Three to Five Years	2	71
Greater Than Five Years	80	92
Total	$ 901	$ 1,326