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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, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivatives not designated as hedges, gains (losses) included in net earnings | $ 1 | $ 6 | $ 6 | $ 16
Earnings (losses) on derivatives | (6) | (1) | (8) | 4
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 | 1 | 7 | 1 | 10
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 | 0 | (4) | (1) | (3)
Total return swap | Other expenses |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivatives not designated as hedges, gains (losses) included in net earnings | 0 | 3 | 6 | 9
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) | $ (7) | $ (14) | $ (12)

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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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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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