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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