Variable Interest Entities - Assets and Liabilities of Consolidated CLO (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets:
Cash and cash equivalents	$ 217,362	$ 563,217
Carrying Value	18,480,919	12,217,352
Investment securities	860,984	736,658
Accrued interest receivable	116,262	95,980
Other assets	188,626	190,748
Total Assets	83,850,397	80,873,509
Liabilities
Accounts payable, accrued expenses and other liabilities	189,696	206,845
Collateralized loan obligations and single asset securitization, net	2,616,116	930,554
Total Liabilities	77,201,590	76,010,933
Total loans held-for-investment
Assets:
Carrying Value	15,604,119	11,164,517
Primary beneficiary
Assets:
Total Assets	102,400
Liabilities
Total Liabilities	53,500
CLOs and SASB | Primary beneficiary
Assets:
Cash and cash equivalents	15,297	96,998
Investment securities	11,426	0
Accrued interest receivable	8,936	5,454
Other assets	11,213	557
Total Assets	3,120,444	1,105,450
Liabilities
Accounts payable, accrued expenses and other liabilities	3,335	663
Collateralized loan obligations and single asset securitization, net	2,616,116	930,554
Total Liabilities	2,619,451	931,217
CLOs and SASB | Primary beneficiary | Total loans held-for-investment
Assets:
Carrying Value	$ 3,073,572	$ 1,002,441