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Reverse Mortgage Interests, Net - Unsecurtized Interests (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Jul. 31, 2018
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Reverse Mortgage Interest [Abstract] |  |  |
Repurchased HECM loans (exceed 98% MCA) | $ 789 | $ 949 |
HECM related receivables | 250 | 300 |
Funded borrower draws not yet securitized | 67 | 76 |
REO-related receivables | 14 | 16 |
Purchase discount | (68) | (122) | $ (173)
Total unsecuritized interests | $ 1,052 | $ 1,219 |

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- Definition Reverse Mortgage Interest [Abstract] + References No definition available. + Details
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- Definition Reverse Mortgage Interest, Unpaid Principal Balance, Unsecuritized + References No definition available. + Details
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- Definition Reverse Mortgage Interest, Unpaid Principal Balance, Unsecuritized, Funded Draws Not Yet Securitized + References No definition available. + Details
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- Definition Reverse Mortgage Interest, Unpaid Principal Balance, Unsecuritized, Home Equity Conversion Mortgage Receivables + References No definition available. + Details
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- Definition Reverse Mortgage Interest, Unpaid Principal Balance, Unsecuritized, Purchase Discount + References No definition available. + Details
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- Definition Reverse Mortgage Interest, Unpaid Principal Balance, Unsecuritized, Real Estate Owned Related Receivables + References No definition available. + Details
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- Definition Reverse Mortgage Interest, Unpaid Principal Balance, Unsecuritized, Repurchase of Home Equity Conversion Mortgages + References No definition available. + Details
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