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COMMITMENTS, CONTINGENCIES AND REGULATORY MATTERS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Concentration Risk
Sublease income	$ 0.2	$ 0.1		$ 0.5	$ 0.1
Amounts held in escrow and trust accounts	$ 19.0			$ 19.0		$ 21.6
Minimum
Concentration Risk
Lease term (in years)	1 year			1 year
Maximum
Concentration Risk
Lease term (in years)	6 years			6 years
Onity Financial Corporation | Revenue | Customer Concentration Risk
Concentration Risk
Percentage of revenue from largest customer (in percent)	43.00%	43.00%		44.00%	43.00%
Highly Correlated - Onity | Revenue | Customer Concentration Risk
Concentration Risk
Percentage of revenue from largest customer (in percent)	6.00%			6.00%
RITM | Revenue | Customer Concentration Risk | Onity Financial Corporation
Concentration Risk
Percentage of loans serviced and subserviced by largest customer's largest client (in percent)			14.00%
Percentage of delinquent loans Onity services (in percent)			0.64

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