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Employee Benefit Plans (Accumulated Benefit Obligations In Excess Of Plan Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Qualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Accumulated benefit obligation
Fair value of plan assets
Non-Qualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Accumulated benefit obligation 6 12
Fair value of plan assets