Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Millions, $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Utility plant, net	$ 9,967	$ 9,705
Receivables, customer, allowance for uncollectible accounts	6	5
Total current assets	1,654	1,315
Total deferred debits and other assets	$ 3,664	$ 3,609
Common stock, par value	$ 0	$ 0
Common stock, shares outstanding	40.3	40.3
Variable Interest Entity, Primary Beneficiary [Member]
Utility plant, net	$ 703	$ 729
Total current assets	68	77
Total deferred debits and other assets	$ 24	$ 31