v3.26.3
Segment Reporting (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Segment Reporting [Line Items]          
Number Of Reportable Segments Not Disclosed Flag     segment    
Operating revenues $ 522 $ 429 $ 1,357 $ 1,119  
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 167 128 450 381  
Depreciation, amortization and accretion 198 176 576 502  
General and administrative 13 10 39 31  
Transaction and integration costs 9 3 21 8  
Operating income (loss) 135 112 271 197  
Equity in earnings of unconsolidated affiliates 29 15 45 27  
Other income, net 12 7 28 22  
Loss on debt extinguishment 0 (7) (5) (7)  
Interest expense (43) (98) (249) (297)  
Income (Loss) Before Income Taxes 133 29 90 (58)  
Income tax expense (benefit) 10 (31) 5 (26)  
Net Income (Loss) 123 60 85 (32)  
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests 72 (172) 75 (291)  
Net Income Attributable to Clearway Energy, Inc. 51 232 10 259  
Equity investments in affiliates 391 301 391 301 $ 291
Capital expenditures 269 73 398 162  
Total Assets 17,373 16,066 17,373 16,066 $ 16,655
Net income (loss) attributable to noncontrolling interests 72 (172) 75 (291)  
Net income (loss) attributable to Clearway Energy, Inc. 51 232 10 259  
As Previously Reported          
Segment Reporting [Line Items]          
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests   (176)   (305)  
Net Income Attributable to Clearway Energy, Inc.   236   273  
Net income (loss) attributable to noncontrolling interests   (176)   (305)  
Net income (loss) attributable to Clearway Energy, Inc.   236   273  
Adjustments          
Segment Reporting [Line Items]          
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests   4   14  
Net Income Attributable to Clearway Energy, Inc.   (4)   (14)  
Net income (loss) attributable to noncontrolling interests   4   14  
Net income (loss) attributable to Clearway Energy, Inc.   (4)   (14)  
Operating Segments          
Segment Reporting [Line Items]          
Operating revenues 522 429 1,357 1,119  
Operating Segments | Flexible Generation          
Segment Reporting [Line Items]          
Operating revenues 85 106 232 224  
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 34 31 93 86  
Depreciation, amortization and accretion 28 28 84 84  
General and administrative 0 0 0 0  
Transaction and integration costs 0 0 0 0  
Operating income (loss) 23 47 55 54  
Equity in earnings of unconsolidated affiliates 1 0 3 0  
Other income, net 0 1 2 3  
Loss on debt extinguishment   0 0 0  
Interest expense (9) (9) (25) (27)  
Income (Loss) Before Income Taxes 15 39 35 30  
Income tax expense (benefit) 0 0 0 0  
Net Income (Loss) 15 39 35 30  
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests 0 0 0 0  
Net Income Attributable to Clearway Energy, Inc. 15 39 35 30  
Equity investments in affiliates 68 72 68 72  
Capital expenditures 2 2 7 4  
Total Assets 1,743 1,859 1,743 1,859  
Net income (loss) attributable to noncontrolling interests 0 0 0 0  
Net income (loss) attributable to Clearway Energy, Inc. 15 39 35 30  
Operating Segments | Renewables & Storage          
Segment Reporting [Line Items]          
Operating revenues 437 323 1,125 895  
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 133 97 357 295  
Depreciation, amortization and accretion 169 148 490 418  
General and administrative 0 0 0 0  
Transaction and integration costs 0 0 0 0  
Operating income (loss) 135 78 278 182  
Equity in earnings of unconsolidated affiliates 28 15 42 27  
Other income, net 11 6 22 17  
Loss on debt extinguishment   (7) (5) (7)  
Interest expense (7) (61) (130) (195)  
Income (Loss) Before Income Taxes 167 31 207 24  
Income tax expense (benefit) 0 0 0 0  
Net Income (Loss) 167 31 207 24  
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests 8 (316) (142) (460)  
Net Income Attributable to Clearway Energy, Inc. 159 347 349 484  
Equity investments in affiliates 323 229 323 229  
Capital expenditures 267 71 391 158  
Total Assets 15,436 14,123 15,436 14,123  
Net income (loss) attributable to noncontrolling interests 8 (316) (142) (460)  
Net income (loss) attributable to Clearway Energy, Inc. 159 347 349 484  
Operating Segments | Renewables & Storage | As Previously Reported          
Segment Reporting [Line Items]          
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests   (322)   (483)  
Net Income Attributable to Clearway Energy, Inc.   353   507  
Net income (loss) attributable to noncontrolling interests   (322)   (483)  
Net income (loss) attributable to Clearway Energy, Inc.   353   507  
Operating Segments | Renewables & Storage | Adjustments          
Segment Reporting [Line Items]          
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests   6   23  
Net Income Attributable to Clearway Energy, Inc.   (6)   (23)  
Net income (loss) attributable to noncontrolling interests   6   23  
Net income (loss) attributable to Clearway Energy, Inc.   (6)   (23)  
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 1 0 2 0  
General and administrative 13 10 39 31  
Transaction and integration costs 9 3 21 8  
Operating income (loss) (23) (13) (62) (39)  
Equity in earnings of unconsolidated affiliates 0 0 0 0  
Other income, net 1 0 4 2  
Loss on debt extinguishment   0 0 0  
Interest expense (27) (28) (94) (75)  
Income (Loss) Before Income Taxes (49) (41) (152) (112)  
Income tax expense (benefit) 10 (31) 5 (26)  
Net Income (Loss) (59) (10) (157) (86)  
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests 64 144 217 169  
Net Income Attributable to Clearway Energy, Inc. (123) (154) (374) (255)  
Equity investments in affiliates 0 0 0 0  
Capital expenditures 0 0 0 0  
Total Assets 194 84 194 84  
Net income (loss) attributable to noncontrolling interests 64 144 217 169  
Net income (loss) attributable to Clearway Energy, Inc. $ (123) (154) $ (374) (255)  
Corporate | As Previously Reported          
Segment Reporting [Line Items]          
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests   146   178  
Net Income Attributable to Clearway Energy, Inc.   (156)   (264)  
Net income (loss) attributable to noncontrolling interests   146   178  
Net income (loss) attributable to Clearway Energy, Inc.   (156)   (264)  
Corporate | Adjustments          
Segment Reporting [Line Items]          
Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests   (2)   (9)  
Net Income Attributable to Clearway Energy, Inc.   2   9  
Net income (loss) attributable to noncontrolling interests   (2)   (9)  
Net income (loss) attributable to Clearway Energy, Inc.   $ 2   $ 9