v3.26.3
Exit Activities and Asset Sales (Schedule of Income, Assets, and Liabilities from Discontinued Operations) (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
Current          
Cash and cash equivalents $ 26   $ 26   $ 0
Total current assets 43   43   0
Non‑current          
Total non‑current assets 783   783   0
Current          
Total current liabilities 14   14   0
Non‑current          
Total non‑current liabilities 87   87   0
Impairment   $ 0 (102) $ 0  
Variable Interest Entity, Primary Beneficiary          
Current          
Total current assets 39   39   0
Non‑current          
Total non‑current assets 686   686   0
Current          
Total current liabilities 11   11   0
Non‑current          
Total non‑current liabilities 59   59   $ 0
Disposal Group, Held-for-Sale, Not Discontinued Operations | NorthStar Clean Energy Strategic Divestments          
Current          
Cash and cash equivalents 26   26    
Accounts receivable and other current assets 17   17    
Total current assets 43   43    
Non‑current          
Plant, property, and equipment, net 693   693    
Construction work in progress 76   76    
Other non‑current assets 14   14    
Total non‑current assets 783   783    
Total assets 826   826    
Current          
Accounts payable and other current liabilities 14   14    
Total current liabilities 14   14    
Non‑current          
Non-current portion of finance leases 52   52    
AROs 35   35    
Total non‑current liabilities 87   87    
Total liabilities 101   101    
Noncontrolling interest associated with VIEs held for sale 479   479    
Discontinued operation, maximum obligation 180   180    
Impairment 102   102    
Expected cost $ 10   $ 10