Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill by Reportable Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill.	$ 937,881	$ 698,635	$ 266,465	$ 248,958
Capital Markets
Goodwill [Line Items]
Goodwill.	448,048
Servicing and Asset Management
Goodwill [Line Items]
Goodwill.	$ 489,833