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Fair Value of Financial Instruments - Fair Value Measured on a Recurring Basis Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | $ (4,458) | $ 269 | $ 2,886
Items Included in Net Income | (2,604) | (4,044) | 1,440
Gains (Losses) in OCI and Other | 12 | 33 | (1,702)
Issuances, Sales, Maturities, Settlements, Calls, Net | 1,229 | (388) | 693
Transfers Into or Out of Level 3, Net | (651) | (328) | (3,048)
Ending Fair Value | $ (6,472) | $ (4,458) | $ 269
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Net income (loss) | Net income (loss) | Net income (loss)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] | Unrealized investment gain (loss) | Unrealized investment gain (loss) | Unrealized investment gain (loss)
Corporate bonds | Fixed maturity AFS securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | $ 2,497 | $ 2,295 | $ 5,720
Items Included in Net Income | (1) | 2 | 1
Gains (Losses) in OCI and Other | (14) | 17 | (1,550)
Issuances, Sales, Maturities, Settlements, Calls, Net | 514 | 194 | 796
Transfers Into or Out of Level 3, Net | (131) | (11) | (2,672)
Ending Fair Value | 2,865 | 2,497 | 2,295
State and municipal bonds | Fixed maturity AFS securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 5 | 35 | 0
Items Included in Net Income | 0 | (4) | 0
Gains (Losses) in OCI and Other | 0 | 4 | (1)
Issuances, Sales, Maturities, Settlements, Calls, Net | 0 | (30) | 0
Transfers Into or Out of Level 3, Net | (5) | 0 | 36
Ending Fair Value | 0 | 5 | 35
Foreign government bonds | Fixed maturity AFS securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value |  | 0 | 41
Items Included in Net Income |  |  | 0
Gains (Losses) in OCI and Other |  |  | (6)
Issuances, Sales, Maturities, Settlements, Calls, Net |  |  | (30)
Transfers Into or Out of Level 3, Net |  |  | (5)
Ending Fair Value |  |  | 0
RMBS | Fixed maturity AFS securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 13 | 1 | 4
Items Included in Net Income | 0 | 0 | 0
Gains (Losses) in OCI and Other | (2) | 0 | 1
Issuances, Sales, Maturities, Settlements, Calls, Net | 6 | 5 | 21
Transfers Into or Out of Level 3, Net | (5) | 7 | (25)
Ending Fair Value | 12 | 13 | 1
CMBS | Fixed maturity AFS securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 8 | 0 | 0
Items Included in Net Income | 0 | 0 | 0
Gains (Losses) in OCI and Other | (1) | 0 | 0
Issuances, Sales, Maturities, Settlements, Calls, Net | 29 | (4) | 17
Transfers Into or Out of Level 3, Net | (28) | 12 | (17)
Ending Fair Value | 8 | 8 | 0
ABS | Fixed maturity AFS securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 1,484 | 1,117 | 870
Items Included in Net Income | 0 | 0 | 0
Gains (Losses) in OCI and Other | 25 | 9 | (113)
Issuances, Sales, Maturities, Settlements, Calls, Net | 1,037 | 733 | 676
Transfers Into or Out of Level 3, Net | (447) | (375) | (316)
Ending Fair Value | 2,099 | 1,484 | 1,117
Hybrid and redeemable preferred securities | Fixed maturity AFS securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 48 | 49 | 93
Items Included in Net Income | 0 | 0 | (6)
Gains (Losses) in OCI and Other | 3 | (2) | (22)
Issuances, Sales, Maturities, Settlements, Calls, Net | 12 | (2) | (12)
Transfers Into or Out of Level 3, Net | 10 | 3 | (4)
Ending Fair Value | 73 | 48 | 49
Trading securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 284 | 581 | 828
Items Included in Net Income | 1 | 17 | (80)
Gains (Losses) in OCI and Other | 0 | 0 | 0
Issuances, Sales, Maturities, Settlements, Calls, Net | (20) | (313) | (152)
Transfers Into or Out of Level 3, Net | 0 | (1) | (15)
Ending Fair Value | 265 | 284 | 581
Equity securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 42 | 153 | 95
Items Included in Net Income | (4) | (19) | 54
Gains (Losses) in OCI and Other | 0 | 0 | 0
Issuances, Sales, Maturities, Settlements, Calls, Net | 0 | (98) | 19
Transfers Into or Out of Level 3, Net | (4) | 6 | (15)
Ending Fair Value | 34 | 42 | 153
Mortgage loans on real estate |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 288 | 487 | 739
Items Included in Net Income | 9 | (7) | (20)
Gains (Losses) in OCI and Other | 1 | 5 | (5)
Issuances, Sales, Maturities, Settlements, Calls, Net | (66) | (197) | (227)
Transfers Into or Out of Level 3, Net | 0 | 0 | 0
Ending Fair Value | 232 | 288 | 487
Derivative liabilities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 36 | 2 | 21
Items Included in Net Income | (124) | (13) | 2
Gains (Losses) in OCI and Other | 0 | 0 | (6)
Issuances, Sales, Maturities, Settlements, Calls, Net | 3 | 16 | 0
Transfers Into or Out of Level 3, Net | (51) | 31 | (15)
Ending Fair Value | (136) | 36 | 2
Other investments |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 0 |  |
Items Included in Net Income | 0 |  |
Gains (Losses) in OCI and Other | 0 |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | 13 |  |
Transfers Into or Out of Level 3, Net | 10 |  |
Ending Fair Value | 23 | 0 |
Ceded MRBs | Other assets |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 2 | 12 | 95
Items Included in Net Income | 0 | (10) | (83)
Gains (Losses) in OCI and Other | 0 | 0 | 0
Issuances, Sales, Maturities, Settlements, Calls, Net | 0 | 0 | 0
Transfers Into or Out of Level 3, Net | 0 | 0 | 0
Ending Fair Value | 2 | 2 | 12
Ceded MRBs | Other liabilities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | (239) | (205) | (17)
Items Included in Net Income | (142) | (34) | (188)
Gains (Losses) in OCI and Other | 0 | 0 | 0
Issuances, Sales, Maturities, Settlements, Calls, Net | 0 | 0 | 0
Transfers Into or Out of Level 3, Net | 0 | 0 | 0
Ending Fair Value | (381) | (239) | (205)
Indexed annuity ceded embedded derivatives | Other assets |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | 940 | 525 | 528
Items Included in Net Income | 161 | 6 | (215)
Gains (Losses) in OCI and Other | 0 | 0 | 0
Issuances, Sales, Maturities, Settlements, Calls, Net | 14 | 409 | 212
Transfers Into or Out of Level 3, Net | 0 | 0 | 0
Ending Fair Value | 1,115 | 940 | 525
RILA, fixed indexed annuity and IUL contracts | Policyholder account balances |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | (9,077) | (4,783) |
Items Included in Net Income | (3,059) | (3,193) |
Gains (Losses) in OCI and Other | 0 | 0 |
Issuances, Sales, Maturities, Settlements, Calls, Net | (313) | (1,101) | (627)
Transfers Into or Out of Level 3, Net | 0 | 0 |
Ending Fair Value | (12,449) | (9,077) | (4,783)
RILA, fixed indexed annuity and IUL contracts | Future contract benefits |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value |  | (4,783) | (6,131)
Items Included in Net Income |  |  | 1,975
Gains (Losses) in OCI and Other |  |  | 0
Issuances, Sales, Maturities, Settlements, Calls, Net |  |  | (627)
Transfers Into or Out of Level 3, Net |  |  | 0
Ending Fair Value |  |  | (4,783)
Reinsurance-related embedded derivatives | Other liabilities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |  |  |
Beginning Fair Value | (789) | 0 |
Items Included in Net Income | 555 | (789) |
Gains (Losses) in OCI and Other | 0 | 0 |
Issuances, Sales, Maturities, Settlements, Calls, Net | 0 | 0 |
Transfers Into or Out of Level 3, Net | 0 | 0 |
Ending Fair Value | $ (234) | $ (789) | $ 0

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- Definition Represents the net increase or decrease to the amount of certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments) due to purchases, sales, issuances, or settlements during the period. The alternative investments represented by this item are subject to significant unobservable inputs (Level 3) for purposes of measuring fair value. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 102 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-102 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into (out of) level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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