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Derivative Financial Instruments - Schedule of Change in Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Equity options |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | $ (23) | $ 98 | $ 227 | $ 153
Interest rate swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (25) | 0 | (105) | 0
Futures contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 5 | 0 | 11 | 5
Other derivative investments |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 2 | 0 | 5 | (1)
Other embedded derivatives |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 0 | 2 | 3 | 3
Reinsurance related embedded derivatives |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 10 | 17 | (8) | (2)
Total net investment gains |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (31) | 117 | 133 | 158
Indexed annuities/IUL embedded derivatives increase |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | $ 169 | $ 252 | $ 590 | $ 706

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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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