v3.25.2
Summary of Significant Accounting Policies - Schedule of EPS Available to Edison International Common Shareholders (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Basic earnings per share:        
Net income available to Edison International common shareholders $ 343 $ 439 $ 1,779 $ 428
Earnings allocated to participating securities 0 0 (1) 0
Income available to common shareholders $ 343 $ 439 $ 1,778 $ 428
Weighted average common shares outstanding (in shares) 385 385 385 385
Basic earnings per share (in dollars per share) $ 0.89 $ 1.14 $ 4.62 $ 1.11
Diluted earnings per share:        
Add back: Earnings allocated to participating securities $ 0 $ 1 $ 1 $ 1
Net income available to Edison International common shareholders $ 343 $ 440 $ 1,779 $ 429
Weighted average common shares outstanding (in shares) 385 385 385 385
Effect of dilutive securities (in shares) 1 3 1 2
Adjusted weighted average shares - diluted (in shares) 386 388 386 387
Diluted earnings per share (in dollars per share) $ 0.89 $ 1.13 $ 4.61 $ 1.11