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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Cash and cash equivalents $ 112 $ 90
Accounts receivable, less allowance for credit losses 701 710
Allowance for credit losses (29) (27)
Accrued unbilled revenues, allowance for credit losses (1) 2
Prepaid expenses and other current assets 96 145
Regulatory assets $ 3,007 $ 2,513
Common Stock [Abstract]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 1,000,000,000 1,000,000,000
Common stock, outstanding (in shares) 651,721,174 631,225,829
Variable Interest Entity, Primary Beneficiary    
Cash and cash equivalents $ 111 $ 90
Accounts receivable, less allowance for credit losses 2 21
Accrued unbilled revenues, after allowance for credit losses, current 2 2
Prepaid expenses and other current assets 13 15
Regulatory assets $ 316 $ 402