v3.26.1
Segment Reporting (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting [Line Items]          
Number Of Reportable Segments Not Disclosed Flag     segment    
Operating revenues $ 481 $ 392 $ 835 $ 690  
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 149 131 283 253  
Depreciation, amortization and accretion 196 163 378 326  
General and administrative 15 11 26 21  
Transaction and integration costs 5 2 12 5  
Operating income (loss) 116 85 136 85  
Equity in earnings of unconsolidated affiliates 11 7 16 12  
Other income, net 8 8 16 15  
Loss on debt extinguishment (3) 0 (5) 0  
Interest expense (105) (83) (206) (199)  
Income (Loss) Before Income Taxes 27 17 (43) (87)  
Income tax expense (benefit) (3) 5 (5) 5  
Net Income (Loss) 30 12 (38) (92)  
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests (92) (18) 3 (119)  
Net Income (Loss) Attributable to Clearway Energy, Inc. 122 30 (41) 27  
Equity investments in affiliates 375 297 375 297 $ 291
Capital expenditures 47 51 129 89  
Total Assets 16,772 16,033 16,772 16,033 $ 16,655
Net income (loss) attributable to noncontrolling interests (92) (18) 3 (119)  
Net income (loss) attributable to Clearway Energy, Inc. 122 30 (41) 27  
As Previously Reported          
Segment Reporting [Line Items]          
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests   (21)   (129)  
Net Income (Loss) Attributable to Clearway Energy, Inc.   33   37  
Net income (loss) attributable to noncontrolling interests   (21)   (129)  
Net income (loss) attributable to Clearway Energy, Inc.   33   37  
Adjustments          
Segment Reporting [Line Items]          
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests   3   10  
Net Income (Loss) Attributable to Clearway Energy, Inc.   (3)   (10)  
Net income (loss) attributable to noncontrolling interests   3   10  
Net income (loss) attributable to Clearway Energy, Inc.   (3)   (10)  
Operating Segments          
Segment Reporting [Line Items]          
Operating revenues 481 392 835 690  
Operating Segments | Flexible Generation          
Segment Reporting [Line Items]          
Operating revenues 86 50 147 118  
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 29 24 59 55  
Depreciation, amortization and accretion 28 28 56 56  
General and administrative 0 0 0 0  
Transaction and integration costs 0 0 0 0  
Operating income (loss) 29 (2) 32 7  
Equity in earnings of unconsolidated affiliates 0 0 2 0  
Other income, net 1 1 2 2  
Loss on debt extinguishment 0   0 0  
Interest expense (8) (10) (16) (18)  
Income (Loss) Before Income Taxes 22 (11) 20 (9)  
Income tax expense (benefit) 0 0 0 0  
Net Income (Loss) 22 (11) 20 (9)  
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests 0 0 0 0  
Net Income (Loss) Attributable to Clearway Energy, Inc. 22 (11) 20 (9)  
Equity investments in affiliates 70 73 70 73  
Capital expenditures 1 0 5 2  
Total Assets 1,770 1,879 1,770 1,879  
Net income (loss) attributable to noncontrolling interests 0 0 0 0  
Net income (loss) attributable to Clearway Energy, Inc. 22 (11) 20 (9)  
Operating Segments | Renewables & Storage          
Segment Reporting [Line Items]          
Operating revenues 395 342 688 572  
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 120 107 224 198  
Depreciation, amortization and accretion 168 135 321 270  
General and administrative 0 0 0 0  
Transaction and integration costs 0 0 0 0  
Operating income (loss) 107 100 143 104  
Equity in earnings of unconsolidated affiliates 11 7 14 12  
Other income, net 6 6 11 11  
Loss on debt extinguishment (3)   (5) 0  
Interest expense (66) (50) (123) (134)  
Income (Loss) Before Income Taxes 55 63 40 (7)  
Income tax expense (benefit) 0 0 0 0  
Net Income (Loss) 55 63 40 (7)  
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests (198) (45) (150) (144)  
Net Income (Loss) Attributable to Clearway Energy, Inc. 253 108 190 137  
Equity investments in affiliates 305 224 305 224  
Capital expenditures 46 51 124 87  
Total Assets 14,876 14,083 14,876 14,083  
Net income (loss) attributable to noncontrolling interests (198) (45) (150) (144)  
Net income (loss) attributable to Clearway Energy, Inc. 253 108 190 137  
Operating Segments | Renewables & Storage | As Previously Reported          
Segment Reporting [Line Items]          
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests   (50)   (161)  
Net Income (Loss) Attributable to Clearway Energy, Inc.   113   154  
Net income (loss) attributable to noncontrolling interests   (50)   (161)  
Net income (loss) attributable to Clearway Energy, Inc.   113   154  
Operating Segments | Renewables & Storage | Adjustments          
Segment Reporting [Line Items]          
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests   5   17  
Net Income (Loss) Attributable to Clearway Energy, Inc.   (5)   (17)  
Net income (loss) attributable to noncontrolling interests   5   17  
Net income (loss) attributable to Clearway Energy, Inc.   (5)   (17)  
Corporate          
Segment Reporting [Line Items]          
Operating revenues 0 0 0 0  
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 0 0 0 0  
Depreciation, amortization and accretion 0 0 1 0  
General and administrative 15 11 26 21  
Transaction and integration costs 5 2 12 5  
Operating income (loss) (20) (13) (39) (26)  
Equity in earnings of unconsolidated affiliates 0 0 0 0  
Other income, net 1 1 3 2  
Loss on debt extinguishment 0   0 0  
Interest expense (31) (23) (67) (47)  
Income (Loss) Before Income Taxes (50) (35) (103) (71)  
Income tax expense (benefit) (3) 5 (5) 5  
Net Income (Loss) (47) (40) (98) (76)  
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests 106 27 153 25  
Net Income (Loss) Attributable to Clearway Energy, Inc. (153) (67) (251) (101)  
Equity investments in affiliates 0 0 0 0  
Capital expenditures 0 0 0 0  
Total Assets 126 71 126 71  
Net income (loss) attributable to noncontrolling interests 106 27 153 25  
Net income (loss) attributable to Clearway Energy, Inc. $ (153) (67) $ (251) (101)  
Corporate | As Previously Reported          
Segment Reporting [Line Items]          
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests   29   32  
Net Income (Loss) Attributable to Clearway Energy, Inc.   (69)   (108)  
Net income (loss) attributable to noncontrolling interests   29   32  
Net income (loss) attributable to Clearway Energy, Inc.   (69)   (108)  
Corporate | Adjustments          
Segment Reporting [Line Items]          
Less: Net (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests   (2)   (7)  
Net Income (Loss) Attributable to Clearway Energy, Inc.   2   7  
Net income (loss) attributable to noncontrolling interests   (2)   (7)  
Net income (loss) attributable to Clearway Energy, Inc.   $ 2   $ 7