MORTGAGE-BACKED SECURITIES - Sales (Details) - USD ($)	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Marketable Securities, Gain (Loss)
Investment Sales, Carrying Value	$ (1,464,125,000)	$ (995,920,000)
Proceeds From Sale Of Mortgage Backed Securities MBS Categorized As Trading	1,413,039,000	988,523,000
Marketable Securities, Realized Gain (Loss)	(51,086,000)	(7,397,000)
Available For Sale Securities Gross Realized Gains	709,000	2,813,000
Available For Sale Securities Gross Realized Losses	$ (51,795,000)	$ (10,210,000)

No definition available.

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- Definition

The cash inflow associated with the sale of mortgage-backed securities classified as trading securities.

+ References

No definition available.

+ Details

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- Definition

Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27357-111563

+ Details

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- Definition

Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

+ Details

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- Definition

Amount of realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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