v3.26.1
Revision of Previously Issued Unaudited Financial Information (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests $ (92)   $ (18)   $ 3 $ (119)    
Net income (loss) attributable to Clearway Energy, Inc. 122   30   (41) 27    
Comprehensive loss attributable to noncontrolling interests (82)   (27)   18 (131)    
Comprehensive income attributable to Clearway Energy, Inc. 131   26   (27) 21    
Redeemable noncontrolling interest in subsidiaries 124   45   124 45 $ 103  
Retained earnings 111   178   111 178 213  
Noncontrolling interest 3,622   3,696   3,622 3,696 3,887  
Total Stockholders’ Equity 5,473 $ 5,503 5,535 $ 5,420 5,473 5,535 5,811 $ 5,564
Net (loss) income 222 (30) 18 (104)        
Retained Earnings (Accumulated Deficit)                
Total Stockholders’ Equity 111 (6) 178 200 111 178 213 254
Net (loss) income 122 (163) 30 (3)        
Noncontrolling Interest                
Total Stockholders’ Equity 3,622 3,740 3,696 3,484 $ 3,622 3,696 $ 3,887 $ 3,501
Net (loss) income $ 100 $ 133 (12) $ (101)        
Common Class A                
Net income (loss) attributable to Clearway Energy, Inc.     $ 9     $ 8    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share) $ 1.00   $ 0.25   $ (0.34) $ 0.23    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share) 1.00   $ 0.25   (0.34) $ 0.23    
Common Class C                
Net income (loss) attributable to Clearway Energy, Inc.     $ 21     $ 19    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share) 1.00   $ 0.25   (0.34) $ 0.23    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share) $ 1.00   $ 0.25   $ (0.34) $ 0.23    
As Previously Reported                
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests     $ (21)     $ (129)    
Net income (loss) attributable to Clearway Energy, Inc.     33     37    
Comprehensive loss attributable to noncontrolling interests     (30)     (141)    
Comprehensive income attributable to Clearway Energy, Inc.     29     31    
Redeemable noncontrolling interest in subsidiaries     38     38    
Retained earnings     188     188    
Noncontrolling interest     3,693     3,693    
Total Stockholders’ Equity     5,542     5,542    
As Previously Reported | Retained Earnings (Accumulated Deficit)                
Total Stockholders’ Equity     188     188    
Net (loss) income     33          
As Previously Reported | Noncontrolling Interest                
Total Stockholders’ Equity     3,693     3,693    
Net (loss) income     (8)          
As Previously Reported | Common Class A                
Net income (loss) attributable to Clearway Energy, Inc.     $ 10     $ 11    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share)     $ 0.28     $ 0.31    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share)     $ 0.28     $ 0.31    
As Previously Reported | Common Class C                
Net income (loss) attributable to Clearway Energy, Inc.     $ 23     $ 26    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share)     $ 0.28     $ 0.31    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share)     $ 0.28     $ 0.31    
Adjustments                
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests     $ 3     $ 10    
Net income (loss) attributable to Clearway Energy, Inc.     (3)     (10)    
Comprehensive loss attributable to noncontrolling interests     3     10    
Comprehensive income attributable to Clearway Energy, Inc.     (3)     (10)    
Redeemable noncontrolling interest in subsidiaries     7     7    
Retained earnings     (10)     (10)    
Noncontrolling interest     3     3    
Total Stockholders’ Equity     (7)     (7)    
Adjustments | Retained Earnings (Accumulated Deficit)                
Total Stockholders’ Equity     (10)     (10)    
Net (loss) income     (3)          
Adjustments | Noncontrolling Interest                
Total Stockholders’ Equity     3     3    
Net (loss) income     (4)          
Adjustments | Common Class A                
Net income (loss) attributable to Clearway Energy, Inc.     $ (1)     $ (3)    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share)     $ (0.03)     $ (0.08)    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share)     $ (0.03)     $ (0.08)    
Adjustments | Common Class C                
Net income (loss) attributable to Clearway Energy, Inc.     $ (2)     $ (7)    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share)     $ (0.03)     $ (0.08)    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share)     $ (0.03)     $ (0.08)