STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities
Net income	$ 126	$ 114
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	158	124
Deferred income taxes	(39)	11
Allowance for equity funds used during construction	(2)	(14)
Provision for bad debts	3	3
Changes in operating assets and liabilities:
Accounts receivable	(28)	(6)
Accrued unbilled revenues	20	4
Inventories	(16)	(16)
Prepayments and other	21	(4)
Accounts payable	6	4
Net regulatory assets and liabilities	(96)	(32)
Other current liabilities	1	(8)
Pension and other employee benefit obligations	(16)	(15)
Other, net	(2)	3
Net cash provided by operating activities	96	160
Investing activities
Utility capital/construction expenditures	(334)	(520)
Investments in utility money pool arrangement	83	4
Repayments from utility money pool arrangement	83	4
Net cash used in investing activities	(334)	(520)
Financing activities
Repayments of short-term borrowings, net	(250)	0
Proceeds from issuance of long-term debt, net	247	343
Borrowings under utility money pool arrangement	324	711
Repayments under utility money pool arrangement	(261)	(711)
Capital contributions from parent	304	436
Dividends paid to parent	(130)	(129)
Net cash provided by financing activities	234	650
Net change in cash, cash equivalents and restricted cash	(4)	290
Cash, cash equivalents and restricted cash at beginning of period	6	16
Cash, cash equivalents and restricted cash at end of period	2	306
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(54)	(40)
Cash received for income taxes, net	17	5
Supplemental disclosure of non-cash investing and financing transactions:
Accrued property, plant and equipment additions	39	108
Inventory transfers to property, plant and equipment	6	14
Allowance for equity funds used during construction	2	14
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 2	$ 306