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Held-for-Sale and Dispositions Dispositions (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Proceeds from Divestiture of Businesses and Interests in Affiliates $ 5 $ 11  
Gain (loss) on disposal and sale of businesses interests 1 $ (43)  
Property, Plant and Equipment, Net $ 33,995   $ 33,166
Hoosier Wind      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Business Combination, Voting Equity Interest Acquired, Percentage 100.00%    
Jordan (IPP1 & IPP4)      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Equity Method Investment, Ownership Percentage   10.00%  
Mong Duong held-for-sale      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Debt, Long-Term and Short-Term, Combined Amount $ 525    
Dominican Republic Renewables      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Debt, Long-Term and Short-Term, Combined Amount 350    
Property, Plant and Equipment, Net 434    
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Jordan (IPP1 & IPP4)      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Gain (loss) on disposal and sale of businesses interests (10)    
Net proceeds received from sale of businesses   $ 45  
Divestiture of Business, sales price   58  
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Ventanas      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Divestiture of Business, sales price 5    
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax 16 9  
Income (Loss) from Individually Significant Component Disposed of or Held-for-Sale, Excluding Discontinued Operations, before Income Tax 32 22  
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong Subsidiary [Member]      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax 12 10  
Income (Loss) from Individually Significant Component Disposed of or Held-for-Sale, Excluding Discontinued Operations, before Income Tax $ 26 $ 23  
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Jordan (IPP1 & IPP4)      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Disposal Group Not Discontinued Operation Ownership Interest Sold 26.00% 26.00%  
Sale of Stock, Percentage of Ownership after Transaction 10.00%    
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong Financing SPV      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Disposal Group Not Discontinued Operation Ownership Interest Sold 51.00%    
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong held-for-sale      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Assets Carrying Amount Disclosure Nonrecurring $ 367    
Disposal Group Not Discontinued Operation Ownership Interest Sold 51.00%    
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Dominican Republic Renewables      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax $ 4 $ (1)  
Assets Carrying Amount Disclosure Nonrecurring $ 116    
Disposal Group Not Discontinued Operation Ownership Interest Sold 50.00%    
Income (Loss) from Individually Significant Component Disposed of or Held-for-Sale, Excluding Discontinued Operations, before Income Tax $ 6 (1)  
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Ventanas      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Disposal Group Not Discontinued Operation Ownership Interest Sold 100.00%    
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Mong Duong Subsidiary [Member]      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Disposal Group Not Discontinued Operation Ownership Interest Sold 51.00%    
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff | Mong Duong held-for-sale      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Long term Concession receivable $ 934    
Mong Duong held-for-sale      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Impairment of Long-Lived Assets to be Disposed of $ 17 $ 37  
Dominican Republic Renewables      
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]      
Discontinued Operation, Equity Method Investment Retained after Disposal, Ownership Interest before Disposal 50.00%