VARIABLE INTEREST ENTITIES - Schedule of Financial Condition of VIEs Reflected in Consolidated Statements of Financial Condition (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Assets
Mortgage servicing rights	$ 1,790,980	$ 1,748,209	[1]
Other assets	219,391	233,003	[1]
Total assets	86,832,017	81,850,712	[1]
Liabilities
Other liabilities	28,657	74,269	[1]
Total liabilities	74,922,984	70,481,286	[1]
Consolidated VIEs
Assets
Cash and cash equivalents	2,500	2,200
Consolidated VIEs | MSR VIE
Assets
Cash and cash equivalents	2,456	2,239
Loans	1,180	1,293
Mortgage servicing rights	25	27
Other assets	1,262	1,238
Total assets	4,923	4,797
Liabilities
Payable for unsettled trades	2,152	2,152
Other liabilities	1,352	1,409
Total liabilities	$ 3,504	$ 3,561

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