Beneficial Interests - Schedule of Beneficial Interest Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Schedule Of Beneficial Interest [Line Items]
Outstanding principal balance, asset	$ 9,248,857		$ 9,248,857		$ 7,089,947
Fair value, asset	545,938		545,938		396,216
Fair value, liability	10,200		10,200		5,100
Derivatives
Schedule Of Beneficial Interest [Line Items]
Outstanding principal balance, liability	2,870,374		2,870,374		2,325,305
Fair value, liability	10,158		10,158		5,075
Hybrid Instruments
Schedule Of Beneficial Interest [Line Items]
Outstanding principal balance, asset	6,316,763		6,316,763		4,530,737
Fair value, asset	519,086		519,086		372,402
Derivatives
Schedule Of Beneficial Interest [Line Items]
Outstanding principal balance, asset	2,932,094		2,932,094		2,559,210
Fair value, asset	26,852		26,852		$ 23,814
Beneficial interests
Schedule Of Beneficial Interest [Line Items]
Fair value adjustments and realized gains (losses) on beneficial interests, net	$ (8,407)	$ (6,288)	$ 4,727	$ 11,377