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Financing Agreements (Borrowings Under Repurchase Agreement And Associated Assets Pledged as Collateral) (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
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Repurchase Agreements |  |
Total Fair Value of Assets Pledged and Accrued Interest | $ 4,100,000,000 | $ 11,300,000,000
Non Mark to Market Financing Facilities |  |
Repurchase Agreements |  |
Carrying Value | 906,466,000 | 0
Total Fair Value of Assets Pledged and Accrued Interest | $ 1,500,100,000 | $ 0
Weighted average haircut rate | 38.62% | 0.00%
Financing agreements with non-mark-to-market collateral provisions |  |
Repurchase Agreements |  |
Carrying Value | $ 252,747,000 | $ 0
Total Fair Value of Assets Pledged and Accrued Interest | $ 430,183,000 | $ 0
Weighted average haircut rate | 42.26% | 0.00%
Residential whole loans |  |
Repurchase Agreements |  |
Carrying Value | $ 1,124,162,000 | $ 4,743,094,000
Total Fair Value of Assets Pledged and Accrued Interest | $ 1,798,813,000 | $ 5,986,267,000
Weighted average haircut rate | 33.53% | 20.07%
Agency MBS |  |
Repurchase Agreements |  |
Carrying Value | $ 0 | $ 1,557,675,000
Total Fair Value of Assets Pledged and Accrued Interest | $ 0 | $ 1,656,373,000
Weighted average haircut rate | 0.00% | 4.46%
Non-Agency MBS |  |
Repurchase Agreements |  |
Carrying Value | $ 1,282,000 | $ 1,121,802,000
Total Fair Value of Assets Pledged and Accrued Interest | $ 2,821,000 | $ 1,420,797,000
Weighted average haircut rate | 50.00% | 20.27%
RPL/NPL MBS |  |
Repurchase Agreements |  |
Carrying Value | $ 32,950,000 | $ 495,091,000
Total Fair Value of Assets Pledged and Accrued Interest | $ 53,946,000 | $ 635,005,000
Weighted average haircut rate | 38.75% | 21.52%
CRT securities |  |
Repurchase Agreements |  |
Carrying Value | $ 54,883,000 | $ 203,569,000
Total Fair Value of Assets Pledged and Accrued Interest | $ 104,234,000 | $ 252,175,000
Weighted average haircut rate | 42.47% | 18.84%
Term Notes Backed by MSR-Related Collateral |  |
Repurchase Agreements |  |
Carrying Value | $ 124,800,000 | $ 962,515,000
Total Fair Value of Assets Pledged and Accrued Interest | $ 238,999,000 | $ 1,217,002,000
Weighted average haircut rate | 41.12% | 21.18%
Other Interest Earning Assets |  |
Repurchase Agreements |  |
Carrying Value | $ 0 | $ 57,198,000
Total Fair Value of Assets Pledged and Accrued Interest | $ 0 | $ 61,708,000
Weighted average haircut rate | 0.00% | 22.01%
Repurchase agreements |  |
Repurchase Agreements |  |
Unamortized debt issuance expense | $ 0 | $ 1,123,000
Loan Securitization |  |
Repurchase Agreements |  |
Total Fair Value of Assets Pledged and Accrued Interest | $ 141,900,000 | $ 238,800,000

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- Definition The fair value, as of the date of each statement of financial position presented, of securities which are owned but transferred to serve as collateral for the payment of repurchase agreements, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728 + Details
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- Definition Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49176635&loc=d3e9760-107771 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(a)(i)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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