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FAIR VALUE DISCLOSURES - Quantitative Information about Level 3 (Details) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Liability for market risk benefits |  | $ 11,810 | $ 14,612
Assets for market risk benefits |  | 863 | 591
Level 3 | Discounted cash flow | Alliance Bernstein |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
AB Contingent consideration payable |  | $ 9 | $ 253
Level 3 | Discounted cash flow | Discount Rate | Minimum | Alliance Bernstein |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Expected revenue growth and discount rate |  | 0.019 | 0.019
Level 3 | Discounted cash flow | Discount Rate | Maximum | Alliance Bernstein |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Expected revenue growth and discount rate |  | 0.104 | 0.104
Level 3 | Discounted cash flow | Discount Rate | Weighted Average | Alliance Bernstein |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Expected revenue growth and discount rate |  | 0.073 | 0.046
Level 3 | Discounted cash flow | Expected Revenue Growth Rate | Minimum | Alliance Bernstein |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Expected revenue growth and discount rate |  | 0.020 | 0.020
Level 3 | Discounted cash flow | Expected Revenue Growth Rate | Maximum | Alliance Bernstein |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Expected revenue growth and discount rate |  | 0.293 | 0.839
Level 3 | Discounted cash flow | Expected Revenue Growth Rate | Weighted Average | Alliance Bernstein |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Expected revenue growth and discount rate |  | 0.055 | 0.103
Level 3 | Corporate | Matrix pricing model |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair value of fixed maturities AFS |  | $ 402 | $ 373
Level 3 | Corporate | Matrix pricing model | Spread over Benchmark | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0070 | 0.0020
Level 3 | Corporate | Matrix pricing model | Spread over Benchmark | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0220 | 0.0747
Level 3 | Corporate | Matrix pricing model | Spread over Benchmark | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0153 | 0.0181
Level 3 | Corporate | Market comparable companies |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair value of fixed maturities AFS |  | $ 981 | $ 979
Level 3 | Corporate | Market comparable companies | EBITDA Multiples | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 4.7 | 3.3
Level 3 | Corporate | Market comparable companies | EBITDA Multiples | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 36.5 | 29.0
Level 3 | Corporate | Market comparable companies | EBITDA Multiples | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 12.2 | 13.6
Level 3 | Corporate | Market comparable companies | Discount Rate | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.084 | 0.000
Level 3 | Corporate | Market comparable companies | Discount Rate | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.349 | 0.228
Level 3 | Corporate | Market comparable companies | Discount Rate | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.039 | 0.039
Level 3 | Corporate | Market comparable companies | Cash Flow Multiples | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 1.8 | 0.8
Level 3 | Corporate | Market comparable companies | Cash Flow Multiples | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 11.8 | 10.0
Level 3 | Corporate | Market comparable companies | Cash Flow Multiples | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 4.5 | 6.3
Level 3 | Corporate | Market comparable companies | Loan to Value | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.000 | 0.034
Level 3 | Corporate | Market comparable companies | Loan to Value | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.564 | 0.610
Level 3 | Corporate | Market comparable companies | Loan to Value | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.150 | 0.138
Level 3 | Trading Securities, at Fair Value | Market comparable companies |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair value of fixed maturities AFS |  | $ 1 |
Level 3 | Trading Securities, at Fair Value | Market comparable companies | Cash Flow Multiples | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 8.4 |
Level 3 | Trading Securities, at Fair Value | Market comparable companies | Cash Flow Multiples | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 8.4 |
Level 3 | Trading Securities, at Fair Value | Market comparable companies | Cash Flow Multiples | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 8.4 |
Level 3 | Trading Securities, at Fair Value | Discounted cash flow |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair value of fixed maturities AFS |  | $ 75 | $ 61
Discount years | 7 years | 7 years |
Level 3 | Trading Securities, at Fair Value | Discounted cash flow | Earnings/Revenue Multiple |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 8.6 | 9.1
Level 3 | Trading Securities, at Fair Value | Discounted cash flow | Discount Factor |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.100 | 0.1000
Level 3 | Other equity investments | Discounted cash flow |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair value of fixed maturities AFS |  |  | $ 2
Level 3 | Other equity investments | Discounted cash flow | Earnings/Revenue Multiple | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  |  | 3.9
Level 3 | Other equity investments | Discounted cash flow | Earnings/Revenue Multiple | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  |  | 8.4
Level 3 | Other equity investments | Discounted cash flow | Earnings/Revenue Multiple | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  |  | 6.5
Level 3 | Purchased MRB asset | Discounted cash flow |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair value of fixed maturities AFS |  | $ 7,376 | $ 9,427
Level 3 | Purchased MRB asset | Discounted cash flow | Lapse Rate | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0024 | 0.0021
Level 3 | Purchased MRB asset | Discounted cash flow | Lapse Rate | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.1305 | 0.1238
Level 3 | Purchased MRB asset | Discounted cash flow | Lapse Rate | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0217 | 0.0179
Level 3 | Purchased MRB asset | Discounted cash flow | Withdrawal Rate | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0006 | 0.0007
Level 3 | Purchased MRB asset | Discounted cash flow | Withdrawal Rate | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.1165 | 0.1497
Level 3 | Purchased MRB asset | Discounted cash flow | Withdrawal Rate | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0048 | 0.0046
Level 3 | Purchased MRB asset | Discounted cash flow | GMIB Utilization Rate | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0004 | 0.0004
Level 3 | Purchased MRB asset | Discounted cash flow | GMIB Utilization Rate | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.6670 | 0.6621
Level 3 | Purchased MRB asset | Discounted cash flow | GMIB Utilization Rate | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0675 | 0.0744
Level 3 | Purchased MRB asset | Discounted cash flow | Non-Performance Risk | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0033 | 0.0035
Level 3 | Purchased MRB asset | Discounted cash flow | Non-Performance Risk | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0093 | 0.0097
Level 3 | Purchased MRB asset | Discounted cash flow | Non-Performance Risk | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0034 | 0.0045
Level 3 | Purchased MRB asset | Discounted cash flow | Volatility Rate - Equity | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.12 | 0.11
Level 3 | Purchased MRB asset | Discounted cash flow | Volatility Rate - Equity | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.29 | 0.28
Level 3 | Purchased MRB asset | Discounted cash flow | Volatility Rate - Equity | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.23 | 0.23
Level 3 | Purchased MRB asset | Discounted cash flow | Mortality | Ages 0 - 40 | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0001 | 0.0001
Level 3 | Purchased MRB asset | Discounted cash flow | Mortality | Ages 0 - 40 | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0017 | 0.0018
Level 3 | Purchased MRB asset | Discounted cash flow | Mortality | Ages 0 - 40 | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0336 | 0.0307
Level 3 | Purchased MRB asset | Discounted cash flow | Mortality | Ages 41 - 60 | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0006 | 0.0007
Level 3 | Purchased MRB asset | Discounted cash flow | Mortality | Ages 41 - 60 | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0052 | 0.0053
Level 3 | Purchased MRB asset | Discounted cash flow | Mortality | Ages 61 - 115 | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.0032 | 0.0033
Level 3 | Purchased MRB asset | Discounted cash flow | Mortality | Ages 61 - 115 | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Percentage measurement input of equity securities |  | 0.4120 | 0.4200
Level 3 | Direct MRB | Discounted cash flow |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Direct MRB |  | $ 10,947 | $ 14,021
Level 3 | Direct MRB | Discounted cash flow | Lapse Rate | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0024 | 0.0021
Level 3 | Direct MRB | Discounted cash flow | Lapse Rate | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.3618 | 0.2937
Level 3 | Direct MRB | Discounted cash flow | Lapse Rate | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0357 | 0.0307
Level 3 | Direct MRB | Discounted cash flow | Withdrawal Rate | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0000 | 0.0000
Level 3 | Direct MRB | Discounted cash flow | Withdrawal Rate | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.1165 | 0.1497
Level 3 | Direct MRB | Discounted cash flow | Withdrawal Rate | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0058 | 0.0064
Level 3 | Direct MRB | Discounted cash flow | Non-Performance Risk |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0094 | 0.0118
Level 3 | Direct MRB | Discounted cash flow | Non-Performance Risk | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0094 | 0.0118
Level 3 | Direct MRB | Discounted cash flow | Mortality | Ages 0 - 40 | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0001 | 0.0001
Level 3 | Direct MRB | Discounted cash flow | Mortality | Ages 0 - 40 | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0017 | 0.0018
Level 3 | Direct MRB | Discounted cash flow | Mortality | Ages 0 - 40 | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0300 | 0.0250
Level 3 | Direct MRB | Discounted cash flow | Mortality | Ages 41 - 60 | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0006 | 0.0007
Level 3 | Direct MRB | Discounted cash flow | Mortality | Ages 41 - 60 | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0052 | 0.0053
Level 3 | Direct MRB | Discounted cash flow | Mortality | Ages 61 - 115 | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0032 | 0.0033
Level 3 | Direct MRB | Discounted cash flow | Mortality | Ages 61 - 115 | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.4120 | 0.4200
Level 3 | Direct MRB | Discounted cash flow | Annuitization Rate | Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0004 | 0.0004
Level 3 | Direct MRB | Discounted cash flow | Annuitization Rate | Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 1.0000 | 1.0000
Level 3 | Direct MRB | Discounted cash flow | Annuitization Rate | Weighted Average |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Measurement input of servicing liability |  | 0.0515 | 0.0538

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