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Derivative Financial Instruments - Carrying Amounts of Derivative Instruments (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Derivative [Line Items] |  |
Total asset derivatives | $ 756 | $ 546
Total liability derivatives | 3,572 | 3,115
Derivative investments | Call options |  |
Derivative [Line Items] |  |
Total asset derivatives | 420 | 244
Other long-term investments | Embedded derivatives |  |
Derivative [Line Items] |  |
Total asset derivatives | 23 | 23
Prepaid expenses and other assets | Embedded derivatives |  |
Derivative [Line Items] |  |
Total asset derivatives | 313 | 279
Contractholder funds | FIA/ IUL embedded derivatives, included in contractholder funds |  |
Derivative [Line Items] |  |
Total liability derivatives | 3,556 | 3,115
Accounts payable and accrued liabilities: | Call options |  |
Derivative [Line Items] |  |
Total liability derivatives | 2 | 0
Accounts payable and accrued liabilities: | Interest Rate Swap |  |
Derivative [Line Items] |  |
Total liability derivatives | $ 16 | $ 0

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