RELATED PARTY TRANSACTION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
RELATED PARTY TRANSACTION
Related party loans outstanding	$ 193.4	$ 137.0
Accounts Receivable, after Allowance for Credit Loss, Related Party, Type	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Accounts Receivable, after Allowance for Credit Loss, Related Party, Name	wd:AffordableHousingProjectPartnersMember	wd:AffordableHousingProjectPartnersMember
Interest Income	$ 12.5
Interest Income, Operating, Related Party [Extensible Enumeration]	us-gaap:RelatedPartyMember