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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
May 01, 2022
Summary of Significant Accounting Policies [Line Items]        
Restricted cash $ 184,000,000 $ 176,000,000    
Restricted cash, current 401,000,000 516,000,000    
Allowance for credit losses 0 0    
Interest costs capitalized 28,000,000 36,000,000 $ 2,000,000  
Contingent lease revenue recognized $ 831,000,000 $ 780,000,000 $ 850,000,000  
Income tax benefit threshold 50.00%      
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Operating revenues Operating revenues Operating revenues  
Disposed of by Sale | Thermal        
Summary of Significant Accounting Policies [Line Items]        
Assets ownership sold (as a percentage)       100.00%
Long-Term Debt, Current        
Summary of Significant Accounting Policies [Line Items]        
Restricted cash, current $ 37,000,000 $ 178,000,000    
Debt Service Obligations        
Summary of Significant Accounting Policies [Line Items]        
Restricted cash, current 102,000,000 85,000,000    
Cash Distribution        
Summary of Significant Accounting Policies [Line Items]        
Restricted cash, current 78,000,000 77,000,000    
Operating Funds        
Summary of Significant Accounting Policies [Line Items]        
Restricted cash, current 184,000,000 176,000,000    
Project Level Subsidiaries        
Summary of Significant Accounting Policies [Line Items]        
Cash and cash equivalents held at project subsidiaries $ 194,000,000 $ 125,000,000