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SECURED FINANCING - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Repurchase Agreements: |  |
Repurchase agreements | $ 64,825,239 | $ 101,740,728
Repurchase agreements - weighted average effective borrowing rates | 0.82% | 1.99%
Repurchase agreements - weighted average remaining maturities | 64 days | 65 days
Maximum repurchase agreements available under counterparty arrangements | $ 2,400,000 |
Commitments available to be drawn | 1,900,000 |
Other secured financing long term, amount | 917,876 | $ 4,455,700
Secured financings and interest rate swaps - collateral held, estimated fair value | 70,600,000 | 112,800,000
Secured financings and interest rate swaps - collateral held, accrued interest | 200,000 | $ 357,900
FHLB De Moines |  |
Repurchase Agreements: |  |
Debt weighted average interest rate |  | 2.16%
Stock held in FHLB | $ 4,400 | $ 147,900
FHLB De Moines | Non Current | Maturity Period in Less Than One Year |  |
Repurchase Agreements: |  |
Other secured financing long term, amount |  | $ 1,400,000
FHLB De Moines | Non Current | Maturity Period in Less Than One Year | Maximum |  |
Repurchase Agreements: |  |
Other secured financing short term amount, expiration period |  | 1 year
FHLB De Moines | Non Current | Maturity Period Between One to Three Years |  |
Repurchase Agreements: |  |
Other secured financing long term, amount |  | $ 2,100,000
FHLB De Moines | Non Current | Maturity Period Between One to Three Years | Minimum |  |
Repurchase Agreements: |  |
Other secured financing short term amount, expiration period |  | 1 year
FHLB De Moines | Non Current | Maturity Period Between One to Three Years | Maximum |  |
Repurchase Agreements: |  |
Other secured financing short term amount, expiration period |  | 3 years

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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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