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Business, Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) Segment | Dec. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) segment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jan. 01, 2021 USD ($) | Dec. 31, 2020 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |  |  |  |
Number of segments |  | 6 |  | 6 |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset, Amortization Expense |  |  | $ 0 |  | $ 3 | $ 45 |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | $ 219,269 | $ 219,269 | 219,269 | $ 219,269 | 210,597 |  | $ 211,737 |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 219,269 | 219,269 | 219,269 | 219,269 | 210,597 |  | 211,737 |
Deferred Sale Inducement Cost | 146 | 146 | 146 | 146 | 133 |  |  |
Property, Plant and Equipment, Capitalized Computer Software, Gross | 7,300 | 7,300 | 7,300 | 7,300 | 6,900 |  |  |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment and Capitalized Computer Software | $ 4,800 | 4,800 | 4,800 | 4,800 | 4,400 |  |  |
Depreciation and Capitalized Computer Software, Amortization |  |  | 470 |  | 423 | 426 |  |
Maximum |  |  |  |  |  |  |  |
Real Estate Held-for-investment And Accumulated Depreciation [Line Items] |  |  |  |  |  |  |  |
Real Estate Held-for-investment And Accumulated Depreciation Life Used For Depreciation | 55 years |  |  |  |  |  |  |
Other balance sheet reclassifications upon adoption of the LDTI standard |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |  |  |  | 7,519 |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |  |  |  | 7,519 |
Annuities and Risk Solutions | Retirement and Income Solutions |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | $ 17,711 | 17,711 | 17,711 | 17,711 | 15,549 | 14,431 | 13,643 | $ 13,643
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | $ 17,711 | $ 17,711 | $ 17,711 | $ 17,711 | $ 15,549 | $ 14,431 | 13,643 | 13,643
Annuities and Risk Solutions | Other balance sheet reclassifications upon adoption of the LDTI standard | Retirement and Income Solutions |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |  |  |  | 7,417 | 7,400
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |  |  |  | $ 7,417 | $ 7,400
Building | Maximum |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life | 40 years | 40 years | 40 years | 40 years |  |  |  |
Leasehold Improvements | Maximum |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life | 20 years | 20 years | 20 years | 20 years |  |  |  |
VODA and VOCRA | Minimum |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Amortization period | 9 years | 9 years | 9 years | 9 years |  |  |  |
VODA and VOCRA | Maximum |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Amortization period | 40 years | 40 years | 40 years | 40 years |  |  |  |
Computer Software, Intangible Asset | Minimum |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Amortization period | 4 years | 4 years | 4 years | 4 years |  |  |  |

X
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