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Investments - Gross realized gains and losses on available for sale fixed maturity security investment transactions (Details) - Fixed maturities - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Gross realized gains and losses on the sale of available for sale fixed maturity security investments |  |  |
Gross gains | $ 35 | $ 22 | $ 43
Gross losses | $ (19) | $ (14) | $ (20)

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- References No definition available. + Details
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- Definition This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
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- Definition This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
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Balance Type: | debit
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- Details
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Period Type: |