FAIR VALUE - Assets and Liabilities on Recurring Basis Using Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Servicing Rights, net
Servicing Rights:
Balance at beginning of period	$ 2,204,593	$ 1,776,395	$ 1,999,402	$ 1,124,302
Total net gains (losses) included in earnings (realized and unrealized)	140,598	233,166	765,143	1,079,525
Sales	(331,922)	(172,867)	(751,276)	(367,133)
Settlements	0	0	0	0
Transfers of IRLCs to closed loans	0	0	0	0
Balance at end of period	2,013,269	1,836,694	2,013,269	1,836,694
IRLCs, net
Derivatives:
Balance at beginning of period	57,605	333,081	180,620	647,045
Total net gains or losses included in earnings (realized and unrealized)	22,112	640,372	279,266	1,749,343
Sales		0		0
Settlements	(102,686)	(558,918)	(374,144)	(1,585,368)
Transfers of IRLCs to closed loans	(41,749)	(155,325)	(150,460)	(551,810)
Balance at end of period	$ (64,718)	$ 259,210	$ (64,718)	$ 259,210

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3).

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Amount of sales of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlements of financial instrument classified as a derivative asset (liability) after deduction of derivative liability, measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfers of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset) out of level 3 of the fair value hierarchy.

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Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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