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Supplementary Financial Information - Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Supplementary Financial Information [Abstract]        
Cash and cash equivalents $ 3,485 $ 455    
Restricted cash included in current assets 40 37    
Restricted cash included in noncurrent assets 14 33    
Total cash, cash equivalents and restricted cash 3,539 525 $ 1,359 $ 444
Cash payments related to:        
Interest paid 636 581 482  
Capitalized interest (37) (29) (26)  
Interest paid (net of capitalized interest) 599 552 456  
Non-cash investing and financing activities:        
Accrued property, plant and equipment additions 104 103 171  
Book value of nuclear fuel sold $ 26 $ 0 $ 0