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Investments (Other Invested Assets) (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018
Document Period End Date | Jun. 30, 2019 |
Other invested assets | $ 2,121,406 | $ 1,915,297
Equity Release Mortgages [Member] |  |
Other invested assets | 641,611 | 475,905
Limited Partner [Member] |  |
Other invested assets | 1,008,571 | 965,094
Derivatives |  |
Other invested assets | 122,484 | 180,699
Fair Value Option Contractholder Directed Unit Linked Investments [Member] |  |
Other invested assets | 255,174 | 197,770
Other |  |
Other invested assets | $ 93,566 | $ 95,829

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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. + References No definition available. + Details
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