| **Legal Proceedings, Contingencies and Guarantees**                             | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
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| **Legal Proceedings, Commitments and Contingencies, and Guarantees [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| Legal Proceedings, Contingencies and Guarantees                                 | Legal Proceedings, Contingencies and Guarantees The Company is a party to various claims and routine litigation incidental to its business, which, based on the facts and circumstances currently known, are not material to the Company's results of operations or financial position.Guarantees As of December 31, 2019 and 2018, the Company had recorded liabilities of approximately $5 million related to guarantee and indemnification agreements and management does not believe that any future indemnity claims will be significantly greater than the amounts recorded.The Company has provided guarantees, if the primary obligor fails to perform, to holders of structured settlement annuities issued by a previously owned subsidiary.  As of December 31, 2019, the potential amount of future payments the Company could be required to pay under these guarantees was approximately $1.7 billion, which will be paid over the lifetime of the annuitants.  The Company does not believe any payment is likely under these guarantees, as the Company is the beneficiary of a trust that must be maintained at a level that approximates the discounted reserves for these annuities. |

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