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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, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | $ 141 | $ (27) | $ 263 | $ 0
Net investment gains (losses) |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (258) | 238 | (447) | 290
Call options | Net investment gains (losses) |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (395) | 257 | (709) | 279
Futures contracts | Net investment gains (losses) |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (8) | 5 | (5) | 4
Foreign currency forwards | Net investment gains (losses) |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 9 | 0 | 12 | 4
Other embedded derivatives | Net investment gains (losses) |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | (5) | 3 | (8) | 3
Reinsurance related embedded derivatives | Net investment gains (losses) |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | 141 | (27) | 263 | 0
FIA/ IUL embedded derivatives |  |  |  |
Derivative [Line Items] |  |  |  |
Change in fair value of derivatives | $ (454) | $ 466 | $ (942) | $ 355

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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