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Fair Value of Financial Instruments - Quantitative Information of Unobservable Inputs Used for Level Three Fair Value Measurements of Financial Instruments on Recurring Basis (Detail) $ in Millions | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 1,312 | $ 1,112
Liabilities, fair value | 4,661 | 3,397
Valuation, Market Approach | Broker quoted/Market Comparable |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | 8,365 | 7,174
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Liabilities, fair value | $ 4,258 | $ 3,115
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Surrender Rates | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0025 | 0.0025
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Surrender Rates | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.7000 | 0.7000
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Surrender Rates | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0683 | 0.0657
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Partial Withdrawals | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0200 | 0.0200
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Partial Withdrawals | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.3448 | 0.2941
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Partial Withdrawals | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0274 | 0.0273
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Non-Performance Spread | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0038 | 0.0048
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Non-Performance Spread | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0110 | 0.0144
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Non-Performance Spread | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0096 | 0.0130
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Market Value of Option | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0000 | 0.0000
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Market Value of Option | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.1893 | 0.2390
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Market Value of Option | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0263 | 0.0087
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Mortality Multiplier | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 1.0000 | 1.0000
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Mortality Multiplier | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 1.0000 | 1.0000
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Mortality Multiplier | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 1.0000 | 1.0000
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Option cost | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0007 | 0.0007
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Option cost | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0548 | 0.0497
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Option cost | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0238 | 0.0189
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Swap rates | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0384 | 0.0388
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Swap rates | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0526 | 0.0473
FIA embedded derivatives, included in contractholder funds | Discounted Cash Flow | Swap rates | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
FIA/ IUL embedded derivatives, included in contractholder funds | 0.0455 | 0.0431
Asset-backed securities | Third-Party Valuation |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 57 | $ 91
Asset-backed securities | Third-Party Valuation | Discount rate | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0509 | 0.0523
Asset-backed securities | Third-Party Valuation | Discount rate | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0695 | 0.0898
Asset-backed securities | Third-Party Valuation | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0600 | 0.0607
Corporates | Third-Party Valuation |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 787 | $ 796
Corporates | Third-Party Valuation | Discount rate | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0000 | 0.0475
Corporates | Third-Party Valuation | Discount rate | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.1287 | 0.1245
Corporates | Third-Party Valuation | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0691 | 0.0722
Corporates | Discounted Cash Flow |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 8 | $ 12
Corporates | Discounted Cash Flow | Discount rate | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.4400 | 0.4400
Corporates | Discounted Cash Flow | Discount rate | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 1.0000 | 1.0000
Corporates | Discounted Cash Flow | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.7520 | 0.7702
States, municipalities and political subdivisions | Third-Party Valuation |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 32 | $ 29
States, municipalities and political subdivisions | Third-Party Valuation | Discount rate | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0625 | 0.0762
States, municipalities and political subdivisions | Third-Party Valuation | Discount rate | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0625 | 0.0762
States, municipalities and political subdivisions | Third-Party Valuation | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0625 | 0.0762
Residential mortgage-backed securities | Third-Party Valuation |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 3 |
Residential mortgage-backed securities | Third-Party Valuation | Discount rate | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0546 |
Residential mortgage-backed securities | Third-Party Valuation | Discount rate | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0546 |
Residential mortgage-backed securities | Third-Party Valuation | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0546 |
Foreign Governments | Third-Party Valuation |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 16 | $ 16
Foreign Governments | Third-Party Valuation | Discount rate | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0694 | 0.0599
Foreign Governments | Third-Party Valuation | Discount rate | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0768 | 0.0628
Foreign Governments | Third-Party Valuation | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt securities | 0.0745 | 0.0619
Investment in unconsolidated affiliates | Valuation, Market Approach | EBITDA multiple | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Method Investment, Measurement Input | 4.4 |
Investment in unconsolidated affiliates | Valuation, Market Approach | EBITDA multiple | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Method Investment, Measurement Input | 31.8 |
Investment in unconsolidated affiliates | Valuation, Market Approach | EBITDA multiple | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Method Investment, Measurement Input | 23.2 |
Investment in unconsolidated affiliates | Affiliate | Discounted Cash Flow |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 285 | $ 23
Investment in unconsolidated affiliates | Affiliate | Valuation, Market Approach | EBITDA multiple | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment in unconsolidated affiliates |  | 5
Investment in unconsolidated affiliates | Affiliate | Valuation, Market Approach | EBITDA multiple | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment in unconsolidated affiliates |  | 5.50
Preferred securities | Affiliate | Discounted Cash Flow |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 1 | $ 1
Preferred securities | Affiliate | Discounted Cash Flow | Discount rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity/ Preferred securities | 1.0000 | 1.0000
Equity securities | Affiliate | Discounted Cash Flow |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 7 | $ 4
Equity securities | Affiliate | Discounted Cash Flow | Discount rate | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity/ Preferred securities | 0.1150 | 0.1110
Equity securities | Affiliate | Discounted Cash Flow | Discount rate | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity/ Preferred securities | 0.1150 | 0.1110
Equity securities | Affiliate | Discounted Cash Flow | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity/ Preferred securities | 0.1150 | 0.1110
Available-for-sale embedded derivative | Discounted Cash Flow |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 28 | $ 23
Available-for-sale embedded derivative | Black Scholes model | Market Value of Fund |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Available-for-sale embedded derivative | 1.0000 | 1.0000
Market risk benefits asset | Discounted Cash Flow |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, fair value | $ 88 | $ 117
Market risk benefits asset | Discounted Cash Flow | Mortality | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 1.0000 | 1.0000
Market risk benefits asset | Discounted Cash Flow | Mortality | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 1.0000 | 1.0000
Market risk benefits asset | Discounted Cash Flow | Mortality | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 1.0000 | 1.0000
Market risk benefits asset | Discounted Cash Flow | Surrender Rates | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0025 | 0.0025
Market risk benefits asset | Discounted Cash Flow | Surrender Rates | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.1000 | 0.1000
Market risk benefits asset | Discounted Cash Flow | Surrender Rates | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0522 | 0.0469
Market risk benefits asset | Discounted Cash Flow | Partial Withdrawals | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0 | 0.0200
Market risk benefits asset | Discounted Cash Flow | Partial Withdrawals | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.2326 | 0.2174
Market risk benefits asset | Discounted Cash Flow | Partial Withdrawals | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0250 | 0.0249
Market risk benefits asset | Discounted Cash Flow | Non-Performance Spread | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0038 | 0.0048
Market risk benefits asset | Discounted Cash Flow | Non-Performance Spread | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0110 | 0.0144
Market risk benefits asset | Discounted Cash Flow | Non-Performance Spread | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0096 | 0.0130
Market risk benefits asset | Discounted Cash Flow | GMWB Utilization | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.5000 | 0.5000
Market risk benefits asset | Discounted Cash Flow | GMWB Utilization | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.6000 | 0.6000
Market risk benefits asset | Discounted Cash Flow | GMWB Utilization | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.5081 | 0.5094
Market Risk benefits liability | Discounted Cash Flow |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Liabilities, fair value | $ 403 | $ 282
Market Risk benefits liability | Discounted Cash Flow | Mortality | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 1.0000 | 1.0000
Market Risk benefits liability | Discounted Cash Flow | Mortality | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 1.0000 | 1.0000
Market Risk benefits liability | Discounted Cash Flow | Mortality | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 1.0000 | 1.0000
Market Risk benefits liability | Discounted Cash Flow | Surrender Rates | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0025 | 0.0025
Market Risk benefits liability | Discounted Cash Flow | Surrender Rates | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.1000 | 0.1000
Market Risk benefits liability | Discounted Cash Flow | Surrender Rates | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0522 | 0.0469
Market Risk benefits liability | Discounted Cash Flow | Partial Withdrawals | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0 | 0.0200
Market Risk benefits liability | Discounted Cash Flow | Partial Withdrawals | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.2326 | 0.2174
Market Risk benefits liability | Discounted Cash Flow | Partial Withdrawals | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0250 | 0.0249
Market Risk benefits liability | Discounted Cash Flow | Non-Performance Spread | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0038 | 0.0048
Market Risk benefits liability | Discounted Cash Flow | Non-Performance Spread | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0110 | 0.0144
Market Risk benefits liability | Discounted Cash Flow | Non-Performance Spread | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.0096 | 0.0130
Market Risk benefits liability | Discounted Cash Flow | GMWB Utilization | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.5000 | 0.5000
Market Risk benefits liability | Discounted Cash Flow | GMWB Utilization | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.6000 | 0.6000
Market Risk benefits liability | Discounted Cash Flow | GMWB Utilization | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market risk benefit | 0.5081 | 0.5094

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