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Derivatives - Gains (losses) included in the Statement of Earnings for changes in the fair value of derivatives (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivatives not designated as hedges, gains (losses) included in net earnings | $ (18) | $ (9) | $ (2) | $ (21)
Earnings (losses) on derivatives | (25) | (8) | (21) | (18)
Fixed maturities with embedded derivatives | Net investment income |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivatives not designated as hedges, gains (losses) included in net earnings | (11) | 0 | (1) | 0
Fixed maturities with embedded derivatives | Securities |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivatives not designated as hedges, gains (losses) included in net earnings | (1) | (3) | (4) | (11)
Total return swap | Other expenses |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivatives not designated as hedges, gains (losses) included in net earnings | (6) | (6) | 3 | (10)
Designated as hedging instrument | Interest rate swaps | Net investment income |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Reclassification from accumulated other comprehensive income | $ (7) | $ 1 | $ (19) | $ 3

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4CC + Details
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