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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Cash and cash equivalents $ 161 $ 90
Accounts receivable, less allowance for credit losses 675 710
Allowance for credit losses 32 27
Accrued unbilled revenues, allowance for credit losses 2 2
Prepaid expenses and other current assets 131 145
Regulatory assets $ 2,428 $ 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) 633,166,053 631,225,829
Variable Interest Entity, Primary Beneficiary    
Cash and cash equivalents $ 132 $ 90
Accounts receivable, less allowance for credit losses 20 21
Accrued unbilled revenues, after allowance for credit losses, current 2 2
Prepaid expenses and other current assets 15 15
Regulatory assets $ 367 $ 402