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Acquisitions - Assets Acquired and Liabilities Assumed - Nationstar (Details) - USD ($) $ in Millions | Aug. 01, 2018 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Liabilities: |  |  |
Preliminary goodwill |  | $ 120 | $ 23
Nationstar Mortgage Holdings Inc. |  |  |
Assets: |  |  |
Cash and cash equivalents | $ 166 |  |
Restricted cash | 430 |  |
Mortgage servicing rights | 3,422 |  |
Advances and other receivables | 1,262 |  |
Reverse mortgage interests | 9,189 |  |
Mortgage loans held for sale | 1,514 |  |
Mortgage loans held for investment | 125 |  |
Property and equipment | 96 |  |
Other assets | 610 |  |
Fair value of assets acquired | 16,814 |  |
Liabilities: |  |  |
Unsecured senior notes | 1,830 |  |
Advance facilities | 551 |  |
Warehouse facilities | 2,701 |  |
Payables and other liabilities | 1,352 |  |
MSR related liabilities—nonrecourse | 1,065 |  |
Mortgage servicing liabilities | 123 |  |
Other nonrecourse debt | 7,583 |  |
Fair value of liabilities assumed | 15,205 |  |
Total fair value of net tangible assets acquired | 1,609 |  |
Intangible assets | 103 |  |
Preliminary goodwill | 65 | $ 65 | $ 10
Total | 1,777 |  |
Customer relationships | Nationstar Mortgage Holdings Inc. |  |  |
Liabilities: |  |  |
Intangible assets | $ 61 |  |
Useful life, assets acquired | 6 years |  |
Trade name | Nationstar Mortgage Holdings Inc. |  |  |
Liabilities: |  |  |
Intangible assets | $ 8 |  |
Useful life, assets acquired | 5 years |  |
Technology | Nationstar Mortgage Holdings Inc. |  |  |
Liabilities: |  |  |
Intangible assets | $ 11 |  |
Capitalized software costs | Nationstar Mortgage Holdings Inc. |  |  |
Liabilities: |  |  |
Intangible assets | $ 23 |  |
Useful life, assets acquired | 2 years |  |
Minimum | Technology | Nationstar Mortgage Holdings Inc. |  |  |
Liabilities: |  |  |
Useful life, assets acquired | 3 years |  |
Maximum | Technology | Nationstar Mortgage Holdings Inc. |  |  |
Liabilities: |  |  |
Useful life, assets acquired | 5 years |  |

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