Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Millions, $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Utility plant, net	$ 10,227	$ 10,098
Receivables, customer, allowance for uncollectible accounts	6	5
Total current assets	1,608	1,804
Total deferred debits and other assets	$ 3,520	$ 3,604
Common stock, par value	$ 0	$ 0
Common stock, shares outstanding	40.3	40.3
Variable Interest Entity, Primary Beneficiary [Member]
Utility plant, net	$ 711	$ 719
Total current assets	93	92
Total deferred debits and other assets	$ 25	$ 23