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CONDENSED STATEMENTS OF CONSOLIDATED CHANGES IN EQUITY (Unaudited) - CERC - USD ($)
$ in Millions
Total
Common Stock
Additional Paid-in-Capital
Retained Earnings
Accumulated Other Comprehensive Loss
CERC
CERC
Common Stock
CERC
Additional Paid-in-Capital
CERC
Retained Earnings
CERC
Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2023   631,000,000         1,000      
Beginning balance at Dec. 31, 2023   $ 6 $ 8,604 $ 1,092 $ (35)   $ 0 $ 4,229 $ 1,634 $ 16
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income $ 350     350   $ 264     264  
Dividend to parent                 (115)  
Other comprehensive income (loss) 2       2 (1)       (1)
Ending balance (in shares) at Mar. 31, 2024   633,000,000         1,000      
Ending balance at Mar. 31, 2024 $ 9,998 $ 6 8,583 1,442 (33) 6,027 $ 0 4,229 1,783 15
Beginning balance (in shares) at Dec. 31, 2024 651,727,276 652,000,000         1,000      
Beginning balance at Dec. 31, 2024 $ 10,666 $ 6 9,105 1,572 (17) 6,268 $ 0 4,519 1,732 17
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 297     297   305     305  
Dividend to parent                 (97)  
Other comprehensive income (loss) $ 0       0 0       0
Ending balance (in shares) at Mar. 31, 2025 652,726,754 652,000,000         1,000      
Ending balance at Mar. 31, 2025 $ 10,955 $ 6 $ 9,097 $ 1,869 $ (17) $ 6,476 $ 0 $ 4,519 $ 1,940 $ 17