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Derivative Financial Instruments - Offsetting (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Derivative Financial Instruments    
Potential reduction in net position of total derivative assets $ 157 $ 220
Potential reduction in net position of total derivative liabilities 157 220
Cash collateral rehypothecated 0 8
Other receivable    
Derivative Financial Instruments    
Right to reclaim cash collateral 42 140
Accounts payable    
Derivative Financial Instruments    
Obligation to return cash collateral $ 0 $ 8