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Fair Value of Assets and Liabilities (Quantitative Info for Level 3 Inputs) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Market risk benefit assets | $ 1,981 | $ 800 | [1] | $ 944
Market risk benefit liabilities | 5,467 | 5,864 | [1] | $ 10,175
Fair Value, Measurements, Recurring |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Market risk benefit assets | 1,981 | 800 |  |
Market risk benefit liabilities | 5,467 | 5,864 |  |
Policyholders' account balances | 7,752 | 3,492 |  |
Level 3 |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Funds held under reinsurance agreements | $ 10,000 |  |  |
Level 3 | Minimum |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Fair value inputs, policyholder age | 50 years |  |  |
Level 3 | Minimum | Market risk benefit liabilities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Mortality rate | 0.00% |  |  |
Level 3 | Maximum |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Fair value inputs, policyholder age | 90 years |  |  |
Level 3 | Fair Value, Measurements, Recurring |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Market risk benefit assets | $ 1,981 | 800 |  |
Market risk benefit liabilities | 5,467 | 5,864 |  |
Policyholders' account balances | $ 7,752 | $ 3,492 |  |
Level 3 | Internal | Minimum | Discounted cash flow | Market risk benefit liabilities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Lapse rate | 1.00% | 1.00% |  |
Spread over SOFR | 0.41% | 0.50% |  |
Utilization rate | 38.00% | 38.00% |  |
Withdrawal rate (greater than maximum range) | 81.00% | 77.00% |  |
Mortality rate | 0.00% | 0.00% |  |
Equity volatility curve | 15.00% | 18.00% |  |
Level 3 | Internal | Minimum | Discounted cash flow | Policyholders’ account balances |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Lapse rate | 1.00% | 1.00% |  |
Spread over SOFR | 0.41% | 0.17% |  |
Mortality rate | 0.00% | 0.00% |  |
Equity volatility curve | 6.00% | 6.00% |  |
Option budget | (1.00%) | (2.00%) |  |
Level 3 | Internal | Minimum | Discounted cash flow | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Discount rate | 0.57% | 0.61% |  |
Level 3 | Internal | Minimum | Discounted cash flow | Commercial mortgage-backed securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Liquidity premium | 0.60% |  |  |
Level 3 | Internal | Minimum | Discounted cash flow | Market risk benefit assets |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Lapse rate | 1.00% | 1.00% |  |
Spread over SOFR | 0.41% | 0.50% |  |
Utilization rate | 38.00% | 38.00% |  |
Withdrawal rate (greater than maximum range) | 81.00% | 77.00% |  |
Mortality rate | 0.00% | 0.00% |  |
Equity volatility curve | 15.00% | 18.00% |  |
Level 3 | Internal | Minimum | Discounted cash flow | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Discount rate | 0.16% | 0.16% |  |
Level 3 | Internal | Minimum | Discounted cash flow | Separate accounts commercial mortgage loan |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Spread |  | 1.25% |  |
Level 3 | Internal | Minimum | Market comparables | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
EBITDA multiples | 5.5 | 2.2 |  |
Level 3 | Internal | Minimum | Market comparables | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
EBITDA multiples | 1.0 | 1.0 |  |
Level 3 | Internal | Minimum | Liquidation | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Liquidation value | 3.55% | 8.16% |  |
Level 3 | Internal | Minimum | Net asset value | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Share price | 3 | 6 |  |
Level 3 | Internal | Maximum | Discounted cash flow | Market risk benefit liabilities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Lapse rate | 20.00% | 20.00% |  |
Spread over SOFR | 1.82% | 2.20% |  |
Utilization rate | 95.00% | 95.00% |  |
Withdrawal rate (greater than maximum range) | 100.00% | 100.00% |  |
Mortality rate | 15.00% | 15.00% |  |
Equity volatility curve | 25.00% | 26.00% |  |
Level 3 | Internal | Maximum | Discounted cash flow | Policyholders’ account balances |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Lapse rate | 80.00% | 80.00% |  |
Spread over SOFR | 1.85% | 1.93% |  |
Mortality rate | 23.00% | 23.00% |  |
Equity volatility curve | 25.00% | 30.00% |  |
Option budget | 7.00% | 6.00% |  |
Level 3 | Internal | Maximum | Discounted cash flow | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Discount rate | 20.00% | 20.00% |  |
Level 3 | Internal | Maximum | Discounted cash flow | Commercial mortgage-backed securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Liquidity premium | 0.75% |  |  |
Level 3 | Internal | Maximum | Discounted cash flow | Market risk benefit assets |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Lapse rate | 20.00% | 20.00% |  |
Spread over SOFR | 1.82% | 2.20% |  |
Utilization rate | 95.00% | 95.00% |  |
Withdrawal rate (greater than maximum range) | 100.00% | 100.00% |  |
Mortality rate | 15.00% | 15.00% |  |
Equity volatility curve | 25.00% | 26.00% |  |
Level 3 | Internal | Maximum | Discounted cash flow | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Discount rate | 20.00% | 20.00% |  |
Level 3 | Internal | Maximum | Discounted cash flow | Separate accounts commercial mortgage loan |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Spread |  | 2.10% |  |
Level 3 | Internal | Maximum | Market comparables | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
EBITDA multiples | 8.8 | 23.5 |  |
Level 3 | Internal | Maximum | Market comparables | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
EBITDA multiples | 10.0 | 7.5 |  |
Level 3 | Internal | Maximum | Liquidation | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Liquidation value | 68.00% | 8.25% |  |
Level 3 | Internal | Maximum | Net asset value | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Share price | 1,714 | 1,708 |  |
Level 3 | Internal | Weighted Average | Discounted cash flow | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Discount rate | 8.65% | 8.09% |  |
Level 3 | Internal | Weighted Average | Discounted cash flow | Commercial mortgage-backed securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Liquidity premium | 0.70% |  |  |
Level 3 | Internal | Weighted Average | Discounted cash flow | Separate accounts commercial mortgage loan |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Spread |  | 1.44% |  |
Level 3 | Internal | Weighted Average | Market comparables | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
EBITDA multiples | 7.4 | 8.3 |  |
Level 3 | Internal | Weighted Average | Market comparables | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
EBITDA multiples | 6.3 | 4.0 |  |
Level 3 | Internal | Weighted Average | Liquidation | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Liquidation value | 57.63% | 8.21% |  |
Level 3 | Internal | Weighted Average | Net asset value | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Share price | 733 | 22 |  |
Level 3 | Internal | Fair Value, Measurements, Recurring | Market risk benefit liabilities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Market risk benefit liabilities | $ 5,467 | $ 5,864 |  |
Level 3 | Internal | Fair Value, Measurements, Recurring | Policyholders’ account balances |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Policyholders' account balances | 7,752 | 3,492 |  |
Level 3 | Internal | Fair Value, Measurements, Recurring | Corporate securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Corporate securities | 1,311 | 3,128 |  |
Level 3 | Internal | Fair Value, Measurements, Recurring | Commercial mortgage-backed securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Commercial mortgage-backed securities | 938 |  |  |
Level 3 | Internal | Fair Value, Measurements, Recurring | Market risk benefit assets |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Market risk benefit assets | 1,981 | 800 |  |
Level 3 | Internal | Fair Value, Measurements, Recurring | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Equity securities | $ 246 | 290 |  |
Level 3 | Internal | Fair Value, Measurements, Recurring | Separate accounts commercial mortgage loan |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Commercial mortgage loans |  | $ 74 |  |
Level 3 | Internal | Fair Value, Measurements, Recurring | Minimum | Discounted cash flow | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Discount rate, equity securities | 10.00% |  |  |
Level 3 | Internal | Fair Value, Measurements, Recurring | Maximum | Discounted cash flow | Equity securities |  |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |  |
Discount rate, equity securities | 20.00% |  |  |
[1] | Prior period amounts adjusted for the implementation of ASU 2018-12: Targeted Improvements to the Accounting for Long-Duration Contracts.

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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References No definition available. + Details
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- Definition Market value of entity divided by earnings before interest, taxes, depreciation and amortization (EBITDA), used as an input to measure fair value. + References No definition available. + Details
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- Definition Actuarially determined assumption around contract lapse rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts. + References No definition available. + Details
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- Definition Actuarially determined assumption around client mortality rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts. + References No definition available. + Details
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- Definition Actuarially determined assumption around utilization rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts. + References No definition available. + Details
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482736/825-10-45-1A + Details
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- Definition Amount of the reinsurer's funds held on its behalf by the ceding insurer, including funds held in trust, under reinsurance treaties or contracts with the assuming insurer as security for the payment of the obligations thereunder. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(10)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Publisher FASB -URI https://asc.fasb.org//310-10/tableOfContent + Details
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- Definition Amount of asset position for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29G -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29G Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7B + Details
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- Definition Amount of liability position for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29G -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29G Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7B + Details
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