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STATEMENTS OF CONSOLIDATED CHANGES IN EQUITY - HOUSTON ELECTRIC - USD ($)
$ in Millions
Total
Common Stock
Additional Paid-in-Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Houston Electric
Houston Electric
Common Stock
Houston Electric
Additional Paid-in-Capital
Houston Electric
Retained Earnings
Houston Electric
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 $ 2,678 $ 944 $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Non-cash contribution from parent               38    
Contribution from parent               1,143    
Other               1    
Net income $ 1,057     1,057   $ 510     510  
Dividend to parent                 (316)  
Other comprehensive loss 33       33 0       0
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) 4,998 $ 0 3,860 1,138 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Non-cash contribution from parent               0    
Contribution from parent               885    
Other               0    
Net income 917     917   593     593  
Dividend to parent                 (367)  
Other comprehensive loss $ (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) 6,109 $ 0 4,745 1,364 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Non-cash contribution from parent               0    
Contribution from parent               844    
Other               0    
Net income 1,019     1,019   546     546  
Dividend to parent                 (339)  
Other comprehensive loss $ 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) $ 7,159 $ 0 $ 5,589 $ 1,571 $ (1)