Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Cash and cash equivalents	$ 66	$ 90
Accounts receivable, less allowance for credit losses	633	710
Allowance for credit losses	(30)	(27)
Accrued unbilled revenues, allowance for credit losses	(2)	2
Prepaid expenses and other current assets	112	145
Regulatory assets	$ 2,525	$ 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)	641,953,090	631,225,829
Variable Interest Entity, Primary Beneficiary
Cash and cash equivalents	$ 66	$ 90
Accounts receivable, less allowance for credit losses	28	21
Accrued unbilled revenues, after allowance for credit losses, current	2	2
Prepaid expenses and other current assets	13	15
Regulatory assets	$ 322	$ 402