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Fair Value of Assets and Liabilities (Quantitative Information for Level 3 Inputs) (Details)
$ in Millions

Dec. 31, 2023

USD ($)

Dec. 31, 2022

USD ($)

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Assets, Fair Value Disclosure

$ (61,924)

^[1]

$ (54,567)

^[2]

Embedded Derivatives In Indexed Annuity [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Financial and Nonfinancial Liabilities, Fair Value Disclosure

$ 415

$ 530

Embedded Derivatives In Indexed Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0.01

0.01

Embedded Derivatives In Indexed Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0.04

0.04

Embedded Derivatives In Indexed Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0.02

0.02

Asset-backed Securities [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Assets, Fair Value Disclosure

$ (268)

$ (274)

Asset-backed Securities [Member] | Minimum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0

0

Asset-backed Securities [Member] | Maximum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0.18

0.18

Asset-backed Securities [Member] | Weighted Average [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0.02

0.02

Corporate Debt Securities [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Assets, Fair Value Disclosure

$ (91)

$ (25)

Total Return Swap [Member] | Funds Withheld At Interest Embedded Derivatives [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Assets, Fair Value Disclosure

(50)

(34)

US Government Agencies Debt Securities [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Assets, Fair Value Disclosure

$ (7)

$ (9)

US Government Agencies Debt Securities [Member] | Minimum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0

0

US Government Agencies Debt Securities [Member] | Maximum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0.01

0.01

US Government Agencies Debt Securities [Member] | Weighted Average [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0.01

0.01

Equity Securities [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Assets, Fair Value Disclosure

$ (31)

$ (9)

Equity Securities [Member] | Weighted Average [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0.04

Corporate And Other Segment Reporting Information [Member] | Minimum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0

Corporate And Other Segment Reporting Information [Member] | Maximum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0.02

Corporate And Other Segment Reporting Information [Member] | Weighted Average [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

0.01

0.01

Measurement Input Crediting Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0.01

0.01

Measurement Input Crediting Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Maximum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0.04

0.04

Measurement Input Crediting Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0.02

0.02

Measurement Input, Counterparty Credit Risk [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0

0

Measurement Input, Counterparty Credit Risk [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Maximum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0.05

0.05

Measurement Input, Counterparty Credit Risk [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0

0

Measurement Input, Withdrawal Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0

0

Measurement Input, Withdrawal Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0.05

0.05

Measurement Input, Withdrawal Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0.04

0.03

Measurement Input, Withdrawal Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0

0

Measurement Input, Withdrawal Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Maximum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0.05

0.05

Measurement Input, Withdrawal Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0.04

0.04

Measurement Input, Lapse Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0

0

Measurement Input, Lapse Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0.35

0.35

Measurement Input, Lapse Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0.17

0.16

Measurement Input, Lapse Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0

0

Measurement Input, Lapse Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Maximum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0.35

0.35

Measurement Input, Lapse Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0.18

0.17

Measurement Input, Mortality Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0

0

Measurement Input, Mortality Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

1

1

Measurement Input, Mortality Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Liability, Measurement Input

0.03

0.03

Measurement Input, Mortality Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0

0

Measurement Input, Mortality Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Maximum [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

1

1

Measurement Input, Mortality Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Embedded Derivative Asset, Measurement Input

0.03

0.03

Measurement Input, EBITDA Multiple [Member] | Corporate Debt Securities [Member] | Minimum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

6

Measurement Input, EBITDA Multiple [Member] | Corporate Debt Securities [Member] | Maximum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

8.5

Measurement Input, EBITDA Multiple [Member] | Corporate Debt Securities [Member] | Weighted Average [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Debt Instrument, Measurement Input

7.1

5.3

Measurement Input, EBITDA Multiple [Member] | Equity Securities [Member] | Minimum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Equity Securities, FV-NI, Measurement Input

8.4

8.4

Measurement Input, EBITDA Multiple [Member] | Equity Securities [Member] | Maximum [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Equity Securities, FV-NI, Measurement Input

12.3

11.2

Measurement Input, EBITDA Multiple [Member] | Equity Securities [Member] | Weighted Average [Member] | Valuation, Market Approach [Member]

Fair Value Measurement Inputs and Valuation Techniques [Line Items]

Equity Securities, FV-NI, Measurement Input

10.1

9.6

[1]	Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of December 31, 2023, the fair value of such investments was $856 million
[2]	Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of December 31, 2022, the fair value of such investments was $683 million.

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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X

- Definition

Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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-Section 50
-Paragraph 2
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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+ References

No definition available.

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Fair value of financial and nonfinancial obligations.

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