v3.26.1
Statements of Changes in Shareholder's Equity (Unaudited) - MEC - USD ($)
$ in Millions
Total
Additional Paid-in Capital
Retained Earnings
MEC
MEC
Common Stock
MEC
Additional Paid-in Capital
MEC
Retained Earnings
Balance at Dec. 31, 2024       $ 10,181 $ 0 $ 561 $ 9,620
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income $ 1,187     232     232
Other equity transactions (5)   $ (2) (1)     (1)
Balance at Mar. 31, 2025       10,412 0 561 9,851
Balance at Dec. 31, 2025 54,065     10,742 0 561 10,181
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 1,114     248     248
Other equity transactions 9 $ 5          
Balance at Mar. 31, 2026 $ 55,052     $ 10,990 $ 0 $ 561 $ 10,429