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SECURED FINANCING - Additional Information (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019
Repurchase Agreements: |  |  |
Netted amounts | $ 67,163,598 | $ 101,740,728 | [1]
Repurchase agreements - weighted average effective borrowing rates | 0.70% | 1.99% |
Repurchase agreements - weighted average remaining maturities | 74 days | 65 days |
Repurchase agreement amount | $ 2,100,000 |  |
Remaining capacity of repurchase agreement | 1,700,000 |  |
Other secured financing long term, amount | 1,538,996 | $ 4,455,700 | [1]
Secured financings and interest rate swaps - collateral held, estimated fair value | 74,300,000 | 112,800,000 |
Secured financings and interest rate swaps - collateral held, accrued interest | $ 225,800 | $ 357,900 |
Minimum |  |  |
Repurchase Agreements: |  |  |
Maturity period (in years) | 5 years |  |
Maximum |  |  |
Repurchase Agreements: |  |  |
Maturity period (in years) | 7 years |  |
Maturity Period Beyond Three Years | Period One | Maximum |  |  |
Repurchase Agreements: |  |  |
Maturity period (in years) | 1 year | 1 year |
Maturity Period Beyond Three Years | Period Two | Minimum |  |  |
Repurchase Agreements: |  |  |
Maturity period (in years) |  | 1 year |
Maturity Period Beyond Three Years | Period Two | Maximum |  |  |
Repurchase Agreements: |  |  |
Maturity period (in years) |  | 3 years |
FHLB De Moines |  |  |
Repurchase Agreements: |  |  |
Debt weighted average interest rate | 1.55% | 2.16% |
Stock held in FHLB | $ 28,800 | $ 147,900 |
FHLB De Moines | Maturity Period Beyond Three Years | Period One |  |  |
Repurchase Agreements: |  |  |
Other secured financing long term, amount | $ 600,000 | 1,400,000 |
FHLB De Moines | Maturity Period Beyond Three Years | Period Two |  |  |
Repurchase Agreements: |  |  |
Other secured financing long term, amount |  | $ 2,100,000 |
[1] | Derived from the audited consolidated financial statements at December 31, 2019.

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- Definition The fair value as of the balance sheet date of securities pledged as collateral that an institution holds on behalf of repurchase agreements, after giving effect for interest rate swaps. + References No definition available. + Details
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- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 325 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=75031641&loc=d3e63345-112809 + Details
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