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STATEMENTS OF CONSOLIDATED CHANGES IN EQUITY - 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, 2021   629,000,000         1,000      
Beginning balance at Dec. 31, 2021   $ 6 $ 8,529 $ 154 $ (64)   $ 0 $ 4,106 $ 1,017 $ 10
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Non-cash contribution from parent               54    
Contribution from parent               289    
Dividend to parent for sale of Arkansas and Oklahoma Natural Gas businesses               (720)    
Net income $ 1,057     1,057   $ 725     725  
Dividend to parent                 (124)  
Other comprehensive income 33       33 6       6
Ending balance (in shares) at Dec. 31, 2022   630,000,000         1,000      
Ending balance at Dec. 31, 2022 10,042 $ 6 8,568 709 (31) 5,363 $ 0 3,729 1,618 16
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Non-cash contribution from parent               0    
Contribution from parent               500    
Dividend to parent for sale of Arkansas and Oklahoma Natural Gas businesses               0    
Net income 917     917   512     512  
Dividend to parent                 (496)  
Other comprehensive income $ (4)       (4) 0       0
Ending balance (in shares) at Dec. 31, 2023 631,225,829 631,000,000         1,000      
Ending balance at Dec. 31, 2023 $ 9,667 $ 6 8,604 1,092 (35) 5,879 $ 0 4,229 1,634 16
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Non-cash contribution from parent               0    
Contribution from parent               290    
Dividend to parent for sale of Arkansas and Oklahoma Natural Gas businesses               0    
Net income 1,019     1,019   540     540  
Dividend to parent                 (442)  
Other comprehensive income $ 18       18 1       1
Ending balance (in shares) at Dec. 31, 2024 651,727,276 652,000,000         1,000      
Ending balance at Dec. 31, 2024 $ 10,666 $ 6 $ 9,105 $ 1,572 $ (17) $ 6,268 $ 0 $ 4,519 $ 1,732 $ 17