SERVICING - Schedules of Geographic Concentration of the Loans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]
UPB of Underlying Loans	$ 17,341,095	$ 12,930,483
% of Total	100.00%	100.00%
California \| Concentration Risk
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]
UPB of Underlying Loans	$ 4,135,498	$ 3,239,619
California \| Concentration Risk \| Loans Underlying Servicing Assets
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]
% of Total	23.80%	25.10%
Florida \| Concentration Risk
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]
UPB of Underlying Loans	$ 2,002,340	$ 1,553,217
Florida \| Concentration Risk \| Loans Underlying Servicing Assets
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]
% of Total	11.50%	12.00%
Other \| Concentration Risk
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]
UPB of Underlying Loans	$ 11,203,257	$ 8,137,647
Other \| Concentration Risk \| Loans Underlying Servicing Assets
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]
% of Total	64.70%	62.90%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.