v3.26.1
Mergers, Acquisitions, and Dispositions - Purchase Price Allocation (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Jan. 31, 2026
Jan. 07, 2026
Dec. 31, 2025
Liabilities assumed:        
Goodwill $ 11,527     $ 420
Calpine        
Assets acquired:        
Cash and cash equivalents     $ 1,540  
Restricted cash and cash equivalents     261  
Accounts receivable     761  
Derivative assets     2,140  
Inventories     989  
Assets held for sale 5,603   5,603  
Property, plant, and equipment     18,481  
Renewable energy credits     180  
Unamortized energy contracts(b)     2,133  
Other assets     700  
Total assets acquired     32,788  
Liabilities assumed:        
Accounts payable and accrued expenses     1,601  
Debt     12,551  
Derivative liabilities     644  
Renewable energy credit obligation     258  
Deferred income taxes and unamortized ITCs     4,083  
Asset retirement obligations     350  
Unamortized energy contracts(b)     1,815  
Other liabilities     758  
Total liabilities assumed     22,060  
Net identifiable assets acquired     10,728  
Goodwill     11,107  
Total merger consideration     21,835  
Business Combination, Recognized Asset Acquired to Liability Assumed, Held for Sale [Abstract]        
Property, plant and equipment 5,454      
Inventories 136      
Other assets 13      
Total assets held for sale 5,603   5,603  
Asset retirement obligations 16      
Other liabilities 82      
Total liabilities associated with assets held for sale $ 98      
Business Combination, Unamortized Energy Credits [Abstract]        
Other current assets     517  
Other deferred debits and other assets     1,616  
Other current liabilities     367  
Other deferred credits and other liabilities     1,448  
Debt, current     279  
Debt, noncurrent   $ 12,600 $ 12,272