v3.26.1
Long-term Debt - Schedule of Long-Term Debt (Details) - USD ($)
$ in Millions
1 Months Ended 6 Months Ended
Jul. 31, 2026
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]      
Total debt   $ 9,141 $ 8,680
Less current maturities   (574) (714)
Less net debt issuance costs   (80) (70)
Add premiums   4 2
Total long-term debt   8,491 7,898
Intercompany Note with Clearway, Inc.      
Debt Instrument [Line Items]      
Total debt   $ 4 6
Interest rate (as a percentage)   3.79%  
Senior Notes      
Debt Instrument [Line Items]      
Total debt   $ 2,725 2,125
Senior Notes | Minimum      
Debt Instrument [Line Items]      
Interest rate (as a percentage)   3.75%  
Senior Notes | Maximum      
Debt Instrument [Line Items]      
Interest rate (as a percentage)   5.75%  
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility      
Debt Instrument [Line Items]      
Total debt   $ 60 361
Basis spread on variable rate (as a percentage)   1.75%  
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility | Subsequent Event      
Debt Instrument [Line Items]      
Total debt $ 55    
Borrowings 45    
Repayments of outstanding borrowings $ 50    
Fixed rate      
Debt Instrument [Line Items]      
Total debt   $ 3,195 3,001
Fixed rate | Minimum      
Debt Instrument [Line Items]      
Basis spread on fixed rate (as a percentage)   2.339%  
Fixed rate | Maximum      
Debt Instrument [Line Items]      
Basis spread on fixed rate (as a percentage)   8.00%  
Variable rate      
Debt Instrument [Line Items]      
Total debt   $ 3,157 $ 3,187
Variable rate | Minimum      
Debt Instrument [Line Items]      
Basis spread on variable rate (as a percentage)   1.375%  
Variable rate | Maximum      
Debt Instrument [Line Items]      
Basis spread on variable rate (as a percentage)   2.75%