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Derivatives Derivatives, Credit-Risk Contingent Features (Details) - USD ($)
$ in Billions
Dec. 31, 2023
Dec. 31, 2022
Derivatives [Abstract]    
Net derivative liabilities with credit-risk contingent features $ 23.7 $ 20.7
Collateral posted 21.4 17.4
Additional collateral to be posted upon a below investment grade credit rating $ 2.3 $ 3.3