XML 78 R68.htm IDEA: XBRL DOCUMENT v3.22.4
Price Risk Management (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Derivative [Line Items]      
Derivative Liability, Fair Value, Amount Not Offset Against Collateral $ 5 $ 3  
Net gain or loss recognized in the statement of income offset by regulatory accounting (188) (119) $ 12
Margin Deposit Assets 0    
Right to reclaim cash collateral 0 0  
Derivative, Collateral, Obligation to Return Cash 140 58  
Derivative, Collateral, Obligation to Return Securities 16    
Derivative Asset, Fair Value, Amount Offset Against Collateral 156    
Credit Risk Contract [Member]      
Derivative [Line Items]      
Derivative, Net Liability Position, Aggregate Fair Value 183    
Collateral Already Posted, Aggregate Fair Value 130    
Collateral Aggregate Fair Value 27    
Right to reclaim cash collateral $ 109    
Letter of Credit [Member] | Credit Risk Contract [Member]      
Derivative [Line Items]      
Collateral posted as letter of credit 21 million    
Electricity [Member]      
Derivative [Line Items]      
Derivative Liability, Fair Value, Amount Not Offset Against Collateral   1  
Natural Gas [Member]      
Derivative [Line Items]      
Derivative Liability, Fair Value, Amount Not Offset Against Collateral   $ 2