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Investments - Summary of Maximum Loss Exposure (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 74,432	$ 58,948
Less: Assets received	246,047	235,149
Investment funds
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	20,278	1,647
Investment funds | Investments, excluding investments in related party
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	340	1,792
Related Party | Investment funds
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	2,253	10,922
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Less: Assets received	61,578	53,243
Variable Interest Entity, Not Primary Beneficiary | Investment funds
Variable Interest Entity [Line Items]
Less: Assets received	12,480	1,297
Variable Interest Entity, Not Primary Beneficiary | Investment funds | Investments, excluding investments in related party
Variable Interest Entity [Line Items]
Less: Assets received	79	1,178
Variable Interest Entity, Not Primary Beneficiary | Related Party | Investment funds
Variable Interest Entity [Line Items]
Less: Assets received	1,569	7,391
Fixed Maturity Securities | Investments, excluding investments in related party
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	40,992	31,622
Fixed Maturity Securities | Related Party
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	10,290	12,681
Fixed Maturity Securities | Variable Interest Entity, Not Primary Beneficiary | Investments, excluding investments in related party
Variable Interest Entity [Line Items]
Less: Assets received	37,454	31,769
Fixed Maturity Securities | Variable Interest Entity, Not Primary Beneficiary | Related Party
Variable Interest Entity [Line Items]
Less: Assets received	9,717	11,324
Equity securities | Related Party
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	279	284
Equity securities | Variable Interest Entity, Not Primary Beneficiary | Related Party
Variable Interest Entity [Line Items]
Less: Assets received	$ 279	$ 284

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