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GUARANTEES AND MORTGAGE REPURCHASE LIABILITY (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Single family | Residential Portfolio Segment
Loss Contingencies [Line Items]
Loans subject to representations and warranties	$ 5,100,000,000		$ 5,100,000,000		$ 5,200,000,000
Loss sharing relationship
Loss Contingencies [Line Items]
Reserve liability related to multifamily DUS program	900,000		900,000		700,000
Loss sharing relationship | Multifamily
Loss Contingencies [Line Items]
UPB of loans sold through DUS	1,800,000,000		1,800,000,000		1,800,000,000
Losses incurred - related to DUS	0	$ 0	0	$ 0
Credit risk
Loss Contingencies [Line Items]
Reserve liability related to mortgage repurchase	$ 700,000		$ 700,000		$ 1,000,000.0

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