CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities
Net income	$ 219	$ 214
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	245	230
Deferred income taxes	(3)	(31)
Allowance for equity funds used during construction	(13)	(7)
Provision for bad debts	8	10
Changes in operating assets and liabilities:
Accounts receivable	(12)	40
Accrued unbilled revenues	49	200
Inventories	45	120
Other current assets	5	24
Accounts payable	(118)	(195)
Net regulatory assets and liabilities	70	62
Other current liabilities	109	98
Pension and other employee benefit obligations	(5)	0
Other, net	(15)	(5)
Net cash provided by operating activities	584	760
Investing activities
Utility capital/construction expenditures	(663)	(464)
Investments in utility money pool arrangement	(64)	0
Repayments from utility money pool arrangement	64	0
Net cash used in investing activities	(663)	(464)
Financing activities
Repayments of short-term borrowings, net	(52)	65
Borrowings under utility money pool arrangement	381	0
Repayments under utility money pool arrangement	(182)	0
Repayments of long-term debt	0	(250)
Capital contributions from parent	79	74
Dividends paid to parent	(130)	(173)
Net cash provided by (used in) financing activities	96	(284)
Net change in cash, cash equivalents and restricted cash	17	12
Cash, cash equivalents and restricted cash at beginning of period	13	10
Cash, cash equivalents and restricted cash at end of period	30	22
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(77)	(79)
Cash received for income taxes, net; includes proceeds from tax credit transfers	42	20
Supplemental disclosure of non-cash investing and financing transactions:
Accrued property, plant and equipment additions	215	154
Inventory transfers to property, plant and equipment	18	15
Operating lease right-of-use assets	0	17
Allowance for equity funds used during construction	$ 13	$ 7