| **Legal Proceedings, Contingencies and Guarantees**                             | 9 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 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 September 30, 2020 and December 31, 2019, the Company had recorded liabilities of approximately $5 million related to guarantee and indemnification agreements.  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 September 30, 2020, 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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