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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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivatives not designated as hedges, gains (losses) included in net earnings | $ 6 | $ (7) | $ 16 | $ (12)
Earnings (losses) on derivatives | (1) | (6) | 4 | (10)
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 | 7 | 0 | 10 | 0
Fixed maturities with embedded derivatives | Realized gains (losses) on securities |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivatives not designated as hedges, gains (losses) included in net earnings | (4) | (3) | (3) | (8)
Total return swap | Other expenses |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivatives not designated as hedges, gains (losses) included in net earnings | 3 | (4) | 9 | (4)
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 | $ (12) | $ 2

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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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