| **Life Policy and Investment Contract Reserves (Narrative) (Details) - USD ($)** | 9 Months Ended |
|----------------------------------------------------------------------------------|----------------|
||
| Life policy reserves:                                                            |           |   |
| **Liability for Future Policy Benefit, after Reinsurance [Abstract]**            |           |   |
| Discount Rate Assumption Changes included in Impact of flooring at Cohort Level  | $ 3,000,000    | $ 5,000,000 |
| Life Insurance Segment                                                           |           |   |
| **Liability for Future Policy Benefit, after Reinsurance [Abstract]**            |           |   |
| Liability for Future Policy Benefit, Adverse Development, Expense                | $ 0            | $ 0 |

| X                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Discount Rate Assumption Changes included in Impact of flooring at Cohort Level
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of expense for adverse development on liability of future policy benefit from net premium exceeding gross premium.
+ References
Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-6Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(2)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480016/944-40-65-2
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| X                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - References
No definition available.
+ Details**Name:**us-gaap_LiabilityForFuturePolicyBenefitAfterReinsuranceAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------|
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