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SECURITIES - Weighted Average Life (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Estimated Fair Value |  |  |
Total | [1] | $ 75,652,396 | $ 114,833,580
Amortized Cost |  |  |
Total |  | 72,487,080 | 112,863,385
Residential Investments |  |  |
Estimated Fair Value |  |  |
Less than one year |  | 110,203 | 3,997
Greater than one year through five years |  | 45,643,138 | 36,290,254
Greater than five years through ten years |  | 28,509,058 | 77,732,756
Greater than ten years |  | 1,309,255 | 533,550
Total |  | 75,571,654 | 114,560,557
Amortized Cost |  |  |
Less than one year |  | 109,540 | 4,543
Greater than one year through five years |  | 43,404,877 | 35,581,833
Greater than five years through ten years |  | 27,610,923 | 76,504,845
Greater than ten years |  | 1,279,353 | 506,719
Total |  | $ 72,404,693 | $ 112,597,940
[1] | Excludes $81.5 million and $102.5 million at December 31, 2020 and 2019, respectively, of agency mortgage-backed securities, $576.6 million and $468.0 million at December 31, 2020 and 2019, respectively, of non-Agency mortgage-backed securities and $391.0 million and $500.3 million at December 31, 2020 and December 31, 2019, respectively, of commercial mortgage-backed securities in consolidated VIEs pledged as collateral and eliminated from the Company’s Consolidated Statements of Financial Condition.

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- Definition Amortized cost of 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 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454 + Details
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