v3.25.3
Derivatives - Pre-Tax Effects of Derivative Instruments (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]        
(Gain) loss on derivatives, net     $ 539 $ (70)
Natural gas supply contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
(Gain) loss on derivatives, net $ (24) $ 0 91 0
Interest rate swaps        
Derivative Instruments, Gain (Loss) [Line Items]        
(Gain) loss on derivatives, net $ 144 $ 480 $ 448 $ (70)