VARIABLE INTEREST ENTITIES - Schedule of Financial Condition of VIEs Reflected in Consolidated Statements of Financial Condition (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets
Mortgage servicing rights	$ 2,018,896	$ 1,748,209	[1]
Other assets	195,248	233,003	[1]
Total assets	89,330,477	81,850,712	[1]
Liabilities
Other liabilities	74,795	74,269	[1]
Total liabilities	77,443,132	70,481,286	[1]
Consolidated VIEs
Assets
Cash and cash equivalents	3,500	2,200
Consolidated VIEs | MSR VIE
Assets
Cash and cash equivalents	3,544	2,239
Loans	1,148	1,293
Mortgage servicing rights	22	27
Other assets	378	1,238
Total assets	5,092	4,797
Liabilities
Payable for unsettled trades	0	2,152
Other liabilities	1,267	1,409
Total liabilities	$ 1,267	$ 3,561

[1] (1)Derived from the audited consolidated financial statements at December 31, 2022.