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Condensed Statements of Consolidated Comprehensive Income (Unaudited) - CERC - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Net income $ 325 $ 531
Adjustment to pension and other postretirement plans (net of tax of $-0- and $-0-) (1) 1
Other comprehensive loss (1) 2
Comprehensive income 324 533
CERC    
Net income 212 631
Adjustment to pension and other postretirement plans (net of tax of $-0- and $-0-) (1) 0
Other comprehensive loss (1) 0
Comprehensive income $ 211 $ 631