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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

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