v3.26.3
Revision of Previously Issued Unaudited Financial Information (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests $ 72     $ (172)     $ 75 $ (291)    
Net income attributable to Clearway Energy, Inc. 51     232     10 259    
Comprehensive loss attributable to noncontrolling interests 142     (174)     160 (305)    
Comprehensive income attributable to Clearway Energy, Inc. 113     229     86 250    
Redeemable noncontrolling interest in subsidiaries 123     104     123 104 $ 103  
Retained earnings 104     358     104 358 213  
Noncontrolling interest 3,730     3,650     3,730 3,650 3,887  
Total Stockholders’ Equity 5,644 $ 5,473 $ 5,503 5,685 $ 5,535 $ 5,420 5,644 5,685 5,811 $ 5,564
Net (loss) income 152 222 (30) 222 18 (104)        
Retained Earnings (Accumulated Deficit)                    
Total Stockholders’ Equity 104 111 (6) 358 178 200 104 358 213 254
Net (loss) income 51 122 (163) 232 30 (3)        
Noncontrolling Interest                    
Total Stockholders’ Equity 3,730 3,622 3,740 3,650 3,696 3,484 $ 3,730 3,650 $ 3,887 $ 3,501
Net (loss) income $ 101 $ 100 $ 133 (10) $ (12) $ (101)        
Common Class A                    
Net income attributable to Clearway Energy, Inc.       $ 68       $ 76    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share) $ 0.42     $ 1.97     $ 0.08 $ 2.20    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share) 0.42     $ 1.97     0.08 $ 2.20    
Common Class C                    
Net income attributable to Clearway Energy, Inc.       $ 164       $ 183    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share) 0.42     $ 1.97     0.08 $ 2.20    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share) $ 0.42     $ 1.97     $ 0.08 $ 2.20    
As Previously Reported                    
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests       $ (176)       $ (305)    
Net income attributable to Clearway Energy, Inc.       236       273    
Comprehensive loss attributable to noncontrolling interests       (178)       (319)    
Comprehensive income attributable to Clearway Energy, Inc.       233       264    
Redeemable noncontrolling interest in subsidiaries       74       74    
Retained earnings       372       372    
Noncontrolling interest       3,666       3,666    
Total Stockholders’ Equity       5,715       5,715    
As Previously Reported | Retained Earnings (Accumulated Deficit)                    
Total Stockholders’ Equity       372       372    
Net (loss) income       236            
As Previously Reported | Noncontrolling Interest                    
Total Stockholders’ Equity       3,666       3,666    
Net (loss) income       9            
As Previously Reported | Common Class A                    
Net income attributable to Clearway Energy, Inc.       $ 69       $ 80    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share)       $ 2.00       $ 2.32    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share)       $ 2.00       $ 2.32    
As Previously Reported | Common Class C                    
Net income attributable to Clearway Energy, Inc.       $ 167       $ 193    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share)       $ 2.00       $ 2.32    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share)       $ 2.00       $ 2.32    
Adjustments                    
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests       $ 4       $ 14    
Net income attributable to Clearway Energy, Inc.       (4)       (14)    
Comprehensive loss attributable to noncontrolling interests       4       14    
Comprehensive income attributable to Clearway Energy, Inc.       (4)       (14)    
Redeemable noncontrolling interest in subsidiaries       30       30    
Retained earnings       (14)       (14)    
Noncontrolling interest       (16)       (16)    
Total Stockholders’ Equity       (30)       (30)    
Adjustments | Retained Earnings (Accumulated Deficit)                    
Total Stockholders’ Equity       (14)       (14)    
Net (loss) income       (4)            
Adjustments | Noncontrolling Interest                    
Total Stockholders’ Equity       (16)       (16)    
Net (loss) income       (19)            
Adjustments | Common Class A                    
Net income attributable to Clearway Energy, Inc.       $ (1)       $ (4)    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share)       $ (0.03)       $ (0.12)    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share)       $ (0.03)       $ (0.12)    
Adjustments | Common Class C                    
Net income attributable to Clearway Energy, Inc.       $ (3)       $ (10)    
Earnings per weighted average Class A and Class C common share - basic (in dollars per share)       $ (0.03)       $ (0.12)    
Earnings per weighted average Class A and Class C common share - diluted (in dollars per share)       $ (0.03)       $ (0.12)