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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, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Call options |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | $ (308) | $ (149) | $ (155) | $ (858)
Interest rate swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (19) | 0 | (19) | 0
Futures contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (4) | (5) | 1 | (10)
Foreign currency forwards |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 4 | 10 | 3 | 22
Other embedded derivatives |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (3) | (2) | 0 | (10)
Reinsurance related embedded derivatives |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 36 | 94 | 34 | 357
Total net investment losses |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (294) | (52) | (136) | (499)
FIA/ IUL embedded derivatives (decrease) increase |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | $ (265) | $ (166) | $ 441 | $ (1,108)

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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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