v3.25.2
Supplemental Information (Narrative) (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount $ (1) $ 1  
Deferred Compensation Liability, Classified, Noncurrent $ 79   $ 79
January 1, 2025      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years    
Performance Shares | January 1, 2025      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares) 275,869    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Granted in Period, Fair Value $ 33    
Stock Issued During Period Percentage Conversion Of Units, Low End 0.00%    
Stock Issued During Period Percentage Conversion Of Units, High End 200.00%    
Performance Shares | Market performance measures achievement | January 1, 2025      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares) 236,448    
Performance Shares | Renewable generation and energy storage installation targets | January 1, 2025      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares) 39,421    
Restricted Stock Units (RSUs) | January 1, 2025      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares) 118,213    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Granted in Period, Fair Value $ 11