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Derivative Financial Instruments - Schedule of Change in Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Equity options |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | $ 260 | $ (308) | $ 487 | $ (155)
Interest rate swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 114 | (19) | 9 | (19)
Futures contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 7 | (4) | 18 | 1
Other derivative investments |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (4) | 4 | 1 | 3
Other embedded derivatives |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 3 | (3) | 6 | 0
Reinsurance related embedded derivatives |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (178) | 36 | (186) | 34
Total net investment gains (losses) |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 202 | (294) | 335 | (136)
Indexed annuities/IUL embedded derivatives increase |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | $ 563 | $ (265) | $ 1,153 | $ 441

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
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