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Nature of Operations, Basis of Presentation and Summary of Significant Accounting Policies (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($) item | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Product Information [Line Items] |  |  |
Estimated Contract Life UL Policies (In Years) | 40 years |  |
Estimated Contract Life VUL Policies (In Years) | 40 years |  |
Front End Load Annuity Products Assumed Life (In Years) | 25 years |  |
Number Of Scenarios Used Per Policy To Value A Block Of Guarantees | 100 |  |
Total Scenarios To Value GLB liability | 45,000,000 |  |
Dividend Expenses | $ | $ 48 | $ 53 | $ 51
Sales Force Intangibles [Member] |  |  |
Product Information [Line Items] |  |  |
Useful Life of Intangible Assets (In Years) | 25 years |  |
VOCRA [Member] |  |  |
Product Information [Line Items] |  |  |
Useful Life of Intangible Assets (In Years) | 20 years |  |
VODA [Member] |  |  |
Product Information [Line Items] |  |  |
Useful Life of Intangible Assets (In Years) | 13 years |  |
Maximum [Member] |  |  |
Product Information [Line Items] |  |  |
Estimated Contract Life Fixed and Variable Deferred Annuities (In Years) | 30 years |  |
Traditional Contract Acquisition Cost Amortization Period (In Years) | 30 years |  |
Participating Policies as a Percentage of the Face Amount of the Insurance In Force | 1.00% | 1.00% | 1.00%
Minimum [Member] |  |  |
Product Information [Line Items] |  |  |
Estimated Contract Life Fixed and Variable Deferred Annuities (In Years) | 15 years |  |
Life Insurance Segment [Member] | Maximum [Member] |  |  |
Product Information [Line Items] |  |  |
Investment Yield Assumptions for Traditional Direct Individual Life Reserves | 7.75% |  |
Life Insurance Segment [Member] | Minimum [Member] |  |  |
Product Information [Line Items] |  |  |
Investment Yield Assumptions for Traditional Direct Individual Life Reserves | 2.25% |  |
Annuities Segment [Member] | Maximum [Member] |  |  |
Product Information [Line Items] |  |  |
Investment Yield Assumptions for Immediate and Deferred Paid-Up Annuities | 12.75% |  |
Annuities Segment [Member] | Minimum [Member] |  |  |
Product Information [Line Items] |  |  |
Investment Yield Assumptions for Immediate and Deferred Paid-Up Annuities | 0.50% |  |
Commercial [Member] |  |  |
Product Information [Line Items] |  |  |
Number of days past due to qualify as delinquent | 60 days |  |
Number of missed payments to qualify as delinqent | 2 |  |
Period In Which Loans No Longer Accrue Interest In Days | 90 days |  |
Number of missed payments to qualify loans as non-accrual | 3 |  |
Loan-to-value ratio indicating principal is greater than collateral | 100.00% |  |
Commercial [Member] | Maximum [Member] |  |  |
Product Information [Line Items] |  |  |
Debt-service coverage ratio indicating property income not covering debt payments | 1.0 |  |
Residential [Member] |  |  |
Product Information [Line Items] |  |  |
Period In Which Loans No Longer Accrue Interest In Days | 90 days |  |
Athene Holding Ltd. [Member] |  |  |
Product Information [Line Items] |  |  |
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income | 20 years |  |

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