v3.26.1
Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Income Tax Disclosures [Line Items]    
Effective Income Tax Rate Reconciliation, Percent (17.00%) (77.00%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%  
Income Tax Expense (Benefit) $ (41) $ 17
Related Party Tax Expense Effect of Change in Allocation Methodology 26  
Unrecognized tax benefit, discrete items, net of allowance 36  
AES Andes    
Income Tax Disclosures [Line Items]    
Unrecognized tax benefit, discrete items, net of allowance $ 27