v3.26.3
Long-term Debt - Schedule of Debt (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Total debt $ 9,510 $ 8,674
Less current maturities (539) (708)
Less net debt issuance costs (78) (70)
Add premiums 4 2
Total long-term debt 8,897 7,898
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 $ 144 361
Basis spread on variable rate (as a percentage) 1.75%  
Fixed rate    
Debt Instrument [Line Items]    
Total debt $ 3,137 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 $ 3,504 $ 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%