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Derivatives - Gain (loss) included in the Statement of Earnings for changes in the fair value of derivatives that do not qualify for hedge accounting (Details) - Not designated as hedging instrument - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Derivative, Gain (Loss) on Derivative, Net [Abstract] |  |
Derivative | $ 75 | $ 19
MBS with embedded derivatives | Realized gains (losses) on securities |  |
Derivative, Gain (Loss) on Derivative, Net [Abstract] |  |
Derivative | (2) | 1
MBS with embedded derivatives | Net earnings (loss) from discontinued operations | Annuity subsidiaries |  |
Derivative, Gain (Loss) on Derivative, Net [Abstract] |  |
Derivative | 0 | 3
Fixed-indexed and variable-indexed annuities (embedded derivative) | Net earnings (loss) from discontinued operations | Annuity subsidiaries |  |
Derivative, Gain (Loss) on Derivative, Net [Abstract] |  |
Derivative | (40) | 647
Call option | Net earnings (loss) from discontinued operations | Annuity subsidiaries |  |
Derivative, Gain (Loss) on Derivative, Net [Abstract] |  |
Derivative | 114 | (628)
Equity index put options | Net earnings (loss) from discontinued operations | Annuity subsidiaries |  |
Derivative, Gain (Loss) on Derivative, Net [Abstract] |  |
Derivative | 2 | (6)
Reinsurance contract (embedded derivative) | Net earnings (loss) from discontinued operations | Annuity subsidiaries |  |
Derivative, Gain (Loss) on Derivative, Net [Abstract] |  |
Derivative | $ 1 | $ 2

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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 http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 + Details
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