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Nature of Operations, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 01, 2021 USD ($) | Dec. 31, 2022 USD ($) item | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Product Information [Line Items] |  |  |  |
Dividend Expenses |  | $ 49 | $ 48 | $ 53
Maximum net premium ratio at individual cohort level |  | 100.00% |  |
Other revenues |  | $ 723 | 777 | 658
Insurance fees |  | 5,603 | 6,039 | 6,371
Reinsurance amount of in-force executive benefit and universal life reserves |  | 9,400 |  |
Coinsurance investments book value |  | 4,600 |  |
Coinsurance Investments Fair Value | $ 5,200 |  |  |
Realized gain on coinsurance investments | 635 |  |  |
Deferred gain on coinsurance investments | $ 797 |  |  |
Amortization of deferred gain on business sold through reinsurance |  | 42 | 38 | 41
Realized gain (loss) |  | 840 | (867) | (513)
Commissions and other expenses |  | 5,125 | 5,219 | 5,064
Federal income tax expense (benefit) |  | 367 | 865 | (76)
Other liabilities |  | 12,021 | 16,405 |
Retained earnings |  | 5,924 | 5,196 |
Income (loss) before taxes |  | 1,725 | 4,643 | 423
Other assets |  | 18,802 | 16,532 |
Derivative investments |  | 3,594 | 5,697 |
Other Adjustments [Member] |  |  |  |
Product Information [Line Items] |  |  |  |
Other liabilities |  | (212) | (500) |
Income (loss) before taxes |  | 12 | (12) |
Other assets |  | (70) | (760) |
Derivative investments |  | $ (142) | 260 |
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] |  |  |  |
Participating Policies as a Percentage of the Face Amount of the Insurance In Force |  | 1.00% |  |
Life Segment [Member] |  |  |  |
Product Information [Line Items] |  |  |  |
Traditional Contract Acquisition Cost Amortization Period (In Years) |  | 60 years |  |
Annuities Segment [Member] |  |  |  |
Product Information [Line Items] |  |  |  |
Traditional Contract Acquisition Cost Amortization Period Low End (in years) |  | 30 years |  |
Traditional Contract Acquisition Cost Amortization Period High End (in years) |  | 40 years |  |
Fee income |  | $ 743 | 848 | 732
Other revenues |  | $ 584 | 628 | 516
Group Protection Segment [Member] |  |  |  |
Product Information [Line Items] |  |  |  |
Traditional Contract Acquisition Cost Amortization Period (In Years) |  | 4 years |  |
Other revenues |  | $ 203 | 180 | $ 177
Retirement Plan Services Segment [Member] |  |  |  |
Product Information [Line Items] |  |  |  |
Traditional Contract Acquisition Cost Amortization Period Low End (in years) |  | 40 years |  |
Traditional Contract Acquisition Cost Amortization Period High End (in years) |  | 50 years |  |
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 | item |  | 2 |  |
Period In Which Loans No Longer Accrue Interest In Days |  | 90 days |  |
Number of missed payments to qualify loans as non-accrual | item |  | 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 |  |
Swiss Re [Member] |  |  |  |
Product Information [Line Items] |  |  |  |
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income |  | 15 years |  |
Athene Holding Ltd. [Member] |  |  |  |
Product Information [Line Items] |  |  |  |
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income |  | 20 years |  |
Other assets |  | $ 2 | 5 |
Derivative investments |  | 39 | 93 |
Restatement Adjustments [Member] |  |  |  |
Product Information [Line Items] |  |  |  |
Other revenues |  | 1 |  |
Insurance fees |  |  | 18 |
Amortization of deferred gain on business sold through reinsurance |  | (32) | (8) |
Realized gain (loss) |  | 9 | 626 |
Commissions and other expenses |  | 1 | 3 |
Federal income tax expense (benefit) |  | (5) | 129 |
Other liabilities |  | (797) | (846) |
Retained earnings |  | 468 | 482 |
Income (loss) before taxes |  | (19) | 611 |
Other assets |  | (187) | (614) |
Derivative investments |  | (142) | 260 |
Restatement Adjustments [Member] | Misstatement Associated with the Coinsurance Reinsurance Transaction [Member] |  |  |  |
Product Information [Line Items] |  |  |  |
Amortization of deferred gain on business sold through reinsurance |  | (32) | (8) |
Realized gain (loss) |  |  | 635 |
Commissions and other expenses |  |  | 4 |
Federal income tax expense (benefit) |  |  | 131 |
Other liabilities |  |  | (492) |
Retained earnings |  | $ 467 | $ 492 |

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