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Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities (Quantitative Information for Level 3 Inputs) (Details) $ in Millions | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
--- | --- | ---
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Assets, Fair Value Disclosure | $ 59,554 | $ 62,516
Corporate Debt Securities [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Assets, Fair Value Disclosure | $ 42 | $ 49
Corporate Debt Securities [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 0.01 | 0.01
Corporate Debt Securities [Member] | Maximum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input |  | 0.01
Corporate Debt Securities [Member] | Minimum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input |  | 0
Asset-backed Securities [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Assets, Fair Value Disclosure | $ 183 | $ 205
Asset-backed Securities [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 0.04 | 0.04
Asset-backed Securities [Member] | Maximum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 0.18 | 0.18
Asset-backed Securities [Member] | Minimum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 0.02 | 0.02
US Government Agencies Debt Securities [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Assets, Fair Value Disclosure | $ 10 | $ 12
US Government Agencies Debt Securities [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 0.01 | 0.01
US Government Agencies Debt Securities [Member] | Maximum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 0.01 | 0.01
US Government Agencies Debt Securities [Member] | Minimum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 0 | 0
Equity securities | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Assets, Fair Value Disclosure | $ 6 | $ 5
Funds Withheld At Interest Embedded Derivatives [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Assets, Fair Value Disclosure | 134 | 182
Embedded Derivatives In Indexed Annuity [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | $ 645 | $ 693
Embedded Derivatives In Indexed Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.02 | 0.02
Embedded Derivatives In Indexed Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.04 | 0.04
Embedded Derivatives In Indexed Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.01 | 0.01
Embedded Derivatives In Variable Annuity [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | $ 148 | $ 162
Measurement Input, Long-term Revenue Growth Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.14 | 0.14
Measurement Input, Long-term Revenue Growth Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.27 | 0.27
Measurement Input, Long-term Revenue Growth Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0 | 0
Measurement Input Crediting Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0.02 | 0.02
Measurement Input Crediting Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Maximum [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0.04 | 0.04
Measurement Input Crediting Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0.01 | 0.01
Measurement Input, Counterparty Credit Risk [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [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, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0.05 | 0.05
Measurement Input, Counterparty Credit Risk [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0 | 0
Measurement Input, Counterparty Credit Risk [Member] | Embedded Derivatives In Variable Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.01 | 0.01
Measurement Input, Counterparty Credit Risk [Member] | Embedded Derivatives In Variable Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.05 | 0.05
Measurement Input, Counterparty Credit Risk [Member] | Embedded Derivatives In Variable Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0 | 0
Measurement Input, Withdrawal Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0.04 | 0.04
Measurement Input, Withdrawal Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Maximum [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0.05 | 0.05
Measurement Input, Withdrawal Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0 | 0
Measurement Input, Withdrawal Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.03 | 0.03
Measurement Input, Withdrawal Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.05 | 0.05
Measurement Input, Withdrawal Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0 | 0
Measurement Input, Withdrawal Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.05 | 0.05
Measurement Input, Withdrawal Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.07 | 0.07
Measurement Input, Withdrawal Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0 | 0
Measurement Input, Lapse Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0.12 | 0.18
Measurement Input, Lapse Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Maximum [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0.35 | 0.35
Measurement Input, Lapse Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0 | 0
Measurement Input, Lapse Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.11 | 0.16
Measurement Input, Lapse Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.35 | 0.35
Measurement Input, Lapse Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0 | 0
Measurement Input, Lapse Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.04 | 0.04
Measurement Input, Lapse Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.25 | 0.25
Measurement Input, Lapse Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0 | 0
Measurement Input, Mortality Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Weighted Average [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0.03 | 0.03
Measurement Input, Mortality Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Maximum [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 1 | 1
Measurement Input, Mortality Rate [Member] | Funds Withheld At Interest Embedded Derivatives [Member] | Minimum [Member] | Valuation, Income Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Asset, Measurement Input | 0 | 0
Measurement Input, Mortality Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.03 | 0.02
Measurement Input, Mortality Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 1 | 1
Measurement Input, Mortality Rate [Member] | Embedded Derivatives In Indexed Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0 | 0
Measurement Input, Mortality Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Weighted Average [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0.02 | 0.02
Measurement Input, Mortality Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Maximum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 1 | 1
Measurement Input, Mortality Rate [Member] | Embedded Derivatives In Variable Annuity [Member] | Minimum [Member] | Valuation Technique, Discounted Cash Flow [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Embedded Derivative Liability, Measurement Input | 0 | 0
Measurement Input, EBITDA Multiple [Member] | Corporate Debt Securities [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 6.8 | 6.4
Measurement Input, EBITDA Multiple [Member] | Corporate Debt Securities [Member] | Maximum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 7.0 | 7.0
Measurement Input, EBITDA Multiple [Member] | Corporate Debt Securities [Member] | Minimum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Debt Instrument, Measurement Input | 6.7 | 5.2
Measurement Input, EBITDA Multiple [Member] | Equity securities | Weighted Average [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Equity Securities, FV-NI, Measurement Input | 8.3 | 8.0
Measurement Input, EBITDA Multiple [Member] | Equity securities | Maximum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Equity Securities, FV-NI, Measurement Input | 10.6 | 10.6
Measurement Input, EBITDA Multiple [Member] | Equity securities | Minimum [Member] | Valuation, Market Approach [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Equity Securities, FV-NI, Measurement Input | 6.9 | 6.9

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