v3.26.1
PROPERTY, PLANT AND EQUIPMENT - Summary (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Property, plant and equipment, at fair value      
Beginning balance $ 37,839    
Additions 113    
Transfer from construction work-in-progress 337    
Transfer to assets held for sale (2,529)    
Items recognized through OCI:      
Change in fair value 93    
Foreign exchange 1,576    
Items recognized through net income:      
Change in fair value (20)    
Depreciation (595)    
Ending balance 36,814    
Construction work-in-progress      
Construction in progress, beginning balance 1,860    
Additions 442    
Transfer to property, plant and equipment (337)    
Items recognized through OCI:      
Foreign exchange (8)    
Construction in progress, ending balance 1,957    
Total property, plant and equipment, at fair value 38,771   $ 39,699
Hydroelectric      
Property, plant and equipment, at fair value      
Beginning balance 29,208    
Additions 63    
Transfer from construction work-in-progress 16    
Transfer to assets held for sale (2,349)    
Items recognized through OCI:      
Change in fair value 116    
Foreign exchange 1,424    
Items recognized through net income:      
Change in fair value 0    
Depreciation (277)    
Ending balance 28,201    
Construction work-in-progress      
Construction in progress, beginning balance 280    
Additions 45    
Transfer to property, plant and equipment (16)    
Items recognized through OCI:      
Foreign exchange 3    
Construction in progress, ending balance 312    
Total property, plant and equipment, at fair value 28,513   29,488
Right-of-use assets, not subject to revaluation 55 $ 29  
Land not subject to revaluation 146 204  
Wind      
Property, plant and equipment, at fair value      
Beginning balance 4,175    
Additions 7    
Transfer from construction work-in-progress 134    
Transfer to assets held for sale 0    
Items recognized through OCI:      
Change in fair value 0    
Foreign exchange 58    
Items recognized through net income:      
Change in fair value (10)    
Depreciation (173)    
Ending balance 4,191    
Construction work-in-progress      
Construction in progress, beginning balance 542    
Additions 81    
Transfer to property, plant and equipment (134)    
Items recognized through OCI:      
Foreign exchange 5    
Construction in progress, ending balance 494    
Total property, plant and equipment, at fair value 4,685   4,717
Right-of-use assets, not subject to revaluation 101 104  
Land not subject to revaluation 12 12  
Solar      
Property, plant and equipment, at fair value      
Beginning balance 4,450    
Additions 37    
Transfer from construction work-in-progress 187    
Transfer to assets held for sale (180)    
Items recognized through OCI:      
Change in fair value (18)    
Foreign exchange 92    
Items recognized through net income:      
Change in fair value (10)    
Depreciation (144)    
Ending balance 4,414    
Construction work-in-progress      
Construction in progress, beginning balance 868    
Additions 254    
Transfer to property, plant and equipment (187)    
Items recognized through OCI:      
Foreign exchange (16)    
Construction in progress, ending balance 919    
Total property, plant and equipment, at fair value 5,333   5,318
Other      
Property, plant and equipment, at fair value      
Beginning balance 6    
Additions 6    
Transfer from construction work-in-progress 0    
Transfer to assets held for sale 0    
Items recognized through OCI:      
Change in fair value (5)    
Foreign exchange 2    
Items recognized through net income:      
Change in fair value 0    
Depreciation (1)    
Ending balance 8    
Construction work-in-progress      
Construction in progress, beginning balance 170    
Additions 62    
Transfer to property, plant and equipment 0    
Items recognized through OCI:      
Foreign exchange 0    
Construction in progress, ending balance 232    
Total property, plant and equipment, at fair value 240   $ 176
Right-of-use assets, not subject to revaluation 0 8  
Solar Segment      
Items recognized through OCI:      
Right-of-use assets, not subject to revaluation 143 118  
Land not subject to revaluation $ 39 $ 40