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Derivative Instruments - Summary of Notional and Fair Value of Derivative Assets and Liabilities (Details) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2022 USD ($)
Derivative [Line Items] |  |  |  |  |
Derivative assets, fair value | $ 5,114 |  | $ 5,114 |  | $ 3,309
Derivative liabilities, fair value | 1,753 |  | 1,753 |  | 1,646
Total derivative liabilities | 9,923 |  | 9,923 |  | 7,410
Derivative Asset, Including Embedded Derivatives | (539) |  | (539) |  | (2,963)
Derivatives designated as hedges |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative assets, fair value | 1,017 |  | 1,017 |  | 1,164
Derivative liabilities, fair value | $ 1,156 |  | $ 1,156 |  | $ 1,159
Derivatives designated as hedges | Foreign currency swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 7,460 |  | 7,460 |  | 6,677
Derivative assets, fair value | $ 659 |  | $ 659 |  | $ 747
Derivative liabilities, fair value | $ 189 |  | $ 189 |  | $ 154
Derivatives designated as hedges | Interest rate swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 10,031 |  | 10,031 |  | 9,332
Derivative assets, fair value | $ 25 |  | $ 25 |  | $ 9
Derivative liabilities, fair value | $ 168 |  | $ 168 |  | $ 150
Derivatives designated as hedges | Foreign currency forwards |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 6,432 |  | 6,432 |  | 6,283
Derivative assets, fair value | $ 331 |  | $ 331 |  | $ 406
Derivative liabilities, fair value | $ 80 |  | $ 80 |  | $ 52
Derivatives designated as hedges | Cross Currency Interest Rate Contract |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 4,468 |  | 4,468 |  | 4,468
Derivative assets, fair value | $ 0 |  | $ 0 |  | $ 0
Derivative liabilities, fair value | 719 |  | 719 |  | 803
Derivatives not designated as hedges |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Total derivative liabilities | 8,767 |  | 8,767 |  | 6,251
Derivative Asset, Including Embedded Derivatives | $ (1,556) |  | $ (1,556) |  | $ (4,127)
Derivatives not designated as hedges | Foreign currency swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 3,981 |  | 3,981 |  | 3,563
Derivative assets, fair value | $ 290 |  | $ 290 |  | $ 251
Derivative liabilities, fair value | $ 109 |  | $ 109 |  | $ 112
Derivatives not designated as hedges | Interest rate swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 1,013 |  | 1,013 |  | 488
Derivative assets, fair value | $ 90 |  | $ 90 |  | $ 74
Derivative liabilities, fair value | $ 0 |  | $ 0 |  | $ 0
Derivatives not designated as hedges | Equity options |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 69,779 |  | 69,779 |  | 65,089
Derivative assets, fair value | $ 3,326 |  | $ 3,326 |  | $ 1,374
Derivative liabilities, fair value | $ 97 |  | $ 97 |  | $ 114
Derivatives not designated as hedges | Futures |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 35 |  | 35 |  | 18
Derivative assets, fair value | $ 87 |  | $ 87 |  | $ 33
Derivative liabilities, fair value | $ 0 |  | $ 0 |  | $ 0
Derivatives not designated as hedges | Foreign currency forwards |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 19,833 |  | 19,833 |  | 16,376
Derivative assets, fair value | $ 299 |  | $ 299 |  | $ 413
Derivative liabilities, fair value | 390 |  | 390 |  | 257
Derivatives not designated as hedges | Embedded derivatives | Funds withheld |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Embedded derivative assets, fair value | 5,653 |  | 5,653 |  | (6,272)
Embedded derivative liabilities, fair value | (28) |  | (28) |  | (77)
Derivatives not designated as hedges | Embedded derivatives | Interest sensitive contract liabilities |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Embedded derivative assets, fair value | 0 |  | 0 |  | 0
Embedded derivative liabilities, fair value | $ 8,198 |  | $ 8,198 |  | $ 5,841
Derivatives not designated as hedges | Other swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 231 |  | 231 |  | 89
Derivative assets, fair value | $ 5 |  | $ 5 |  | $ 0
Derivative liabilities, fair value | $ 1 |  | $ 1 |  | $ 4
Net Investment Hedging [Member] | Derivatives designated as hedges | Foreign currency forwards |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 227 |  | 227 |  | 216
Derivative assets, fair value | $ 2 |  | $ 2 |  | $ 2
Derivative liabilities, fair value | 0 |  | 0 |  | $ 0
Fair Value Hedging [Member] | Derivatives designated as hedges | Foreign currency swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net, Recorded in Other Comprehensive Income | (57) | $ 65 | 57 | $ 9 |
Fair Value Hedging [Member] | Derivatives designated as hedges | Foreign currency swaps | Investment related gains (losses) |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 0 | 0 | 0 | 0 |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | (43) | 242 | (102) | 333 |
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge | 45 | (252) | 109 | (347) |
Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss) | 2 | (10) | 7 | (14) |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Amortization Approach | 0 | 0 | 0 | 0 |
Fair Value Hedging [Member] | Derivatives designated as hedges | Interest rate swaps | Investment related gains (losses) |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 0 | 0 | 0 | 0 |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | (120) | (5) | (18) | (77) |
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge | 120 | 18 | 16 | 93 |
Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss) | 0 | 13 | (2) | 16 |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Amortization Approach | 0 | 0 | 0 | 0 |
Fair Value Hedging [Member] | Derivatives designated as hedges | Foreign currency forwards |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net, Recorded in Other Comprehensive Income | (61) | 16 | 2 | (57) |
Fair Value Hedging [Member] | Derivatives designated as hedges | Foreign currency forwards | Investment related gains (losses) |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 3 | 0 | 7 | 1 |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | (35) | 201 | (105) | 328 |
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge | 37 | (232) | 110 | (358) |
Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss) | 2 | (31) | 5 | (30) |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Amortization Approach | (42) | 16 | 45 | 30 |
Fair Value Hedging [Member] | Derivatives designated as hedges | Cross Currency Interest Rate Contract | Investment related gains (losses) |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 0 | 0 | 0 | 0 |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 7 | (335) | 85 | (494) |
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge | (10) | 298 | (80) | 495 |
Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss) | (3) | (37) | 5 | 1 |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Amortization Approach | 0 | 0 | 0 | 0 |
Fair Value Hedging [Member] | Derivatives designated as hedges | Cross Currency Interest Rate Contract | Interest sensitive contract benefits |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 0 | 0 | 0 | 0 |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 13 | 15 | 28 | 25 |
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge | (15) | (14) | (30) | (23) |
Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss) | (2) | 1 | (2) | 2 |
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Amortization Approach | $ 0 | $ 0 | $ 0 | $ 0 |

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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