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Investments (Schedule Of Average Carrying Value Of Impaired Mortgage Loans On Real Estate) (Details) - Commercial [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Information about impaired mortgage loans on real estate |  |  |  |
Average carrying value for impaired mortgage loans on real estate | $ 37 | $ 16 | $ 36 | $ 10
Interest income recognized on impaired mortgage loans on real estate |  |  |  |
Interest income collected on impaired mortgage loans on real estate |  |  |  |

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- Definition Average carrying value for impaired loans on real estate. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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- Definition Interest income collected on impaired mortgage loans on real estate. + References No definition available. + Details
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- Definition Interest income recognized on impaired mortgage loans on real estate. + References No definition available. + Details
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- Details
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