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Investment in NuScale - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
 1 Months Ended 4 Months Ended 10 Months Ended
Nov. 30, 2025
Feb. 13, 2026
Oct. 31, 2025
Sep. 30, 2025
Subsequent Event        
Schedule of Equity Method Investments [Line Items]        
Proceeds from repurchase of equity   $ 1,350    
NuScale        
Schedule of Equity Method Investments [Line Items]        
Related party transaction, shares sold (in shares)     15  
Investment, NuScale shares owned (in shares)       126
Related party transaction, proceeds from sale of shares     $ 605  
Remaining shares sold (in shares) 111      
Related party transaction, shares converted (in shares) 71