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Investments (Amortized Cost Of Mortgage Loans On Real Estate On Nonaccrual Status) (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual | $ 47 | $ 34
Commercial [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with no ACL |  |
Nonaccrual |  |
Residential [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual | $ 47 | $ 34

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