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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Cash and cash equivalents | $ 90,000,000 | $ 74,000,000
Accounts receivable | 710,000,000 | 889,000,000
Allowance for credit losses | 27,000,000 | 38,000,000
Accrued unbilled revenues, allowance for credit loss | 2,000,000 | 4,000,000
Prepaid expenses and other current assets ($15 and $13 related to VIEs, respectively) | 145,000,000 | 171,000,000
Regulatory assets | $ 2,513,000,000 | $ 2,193,000,000
Preferred Stock [Abstract] |  |
Cumulative preferred stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Cumulative preferred stock, authorized (in shares) | 20,000,000 | 20,000,000
Cumulative preferred stock, outstanding (in shares) | 0 | 800,000
Cumulative preferred stock, aggregate liquidation preference | $ 0 | $ 800
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) | 631,225,829 | 629,535,631
Variable Interest Entity, Primary Beneficiary |  |
Cash and cash equivalents | $ 90,000,000 | $ 75,000,000
Accounts receivable | 21,000,000 | 22,000,000
Accrued unbilled revenues, after allowance for credit losses, current | 2,000,000 | 0
Prepaid expenses and other current assets ($15 and $13 related to VIEs, respectively) | 15,000,000 | 13,000,000
Regulatory assets | $ 402,000,000 | $ 229,000,000

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