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GUARANTEES AND MORTGAGE REPURCHASE LIABILITY (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Loss Contingencies [Line Items]
Loans serviced for others	$ 7,048,505,000		$ 7,048,505,000		$ 7,216,343,000
Single family
Loss Contingencies [Line Items]
Loans serviced for others	5,198,826,000		5,198,826,000		5,316,304,000
Loss sharing relationship
Loss Contingencies [Line Items]
Reserve liability related to multifamily DUS program	600,000		600,000		500,000
Loss sharing relationship | Multifamily
Loss Contingencies [Line Items]
UPB of loans sold through DUS	1,700,000,000		1,700,000,000		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	$ 1,100,000		$ 1,100,000		$ 1,500,000

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