CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating activities
Net income	$ 32	$ 34
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	37	39
Deferred income taxes	9	(10)
Allowance for equity funds used during construction	(1)	(1)
Changes in operating assets and liabilities:
Accounts receivable	4	(7)
Accrued unbilled revenues	10	11
Inventories	2	3
Other current assets	6	5
Accounts payable	(9)	(13)
Net regulatory assets and liabilities	(47)	4
Other current liabilities	(3)	(3)
Pension and other employee benefit obligations	(5)	(7)
Other, net	1	1
Net cash provided by operating activities	36	56
Investing activities
Capital/construction expenditures	(51)	(63)
Net cash used in investing activities	(51)	(63)
Financing activities
Proceeds from short-term borrowings, net	7	11
Borrowings under utility money pool arrangement	(56)	0
Repayments under utility money pool arrangement	43	0
Capital contributions from parent	39	12
Dividends paid to parent	(20)	(15)
Other, net	2	0
Net cash provided by financing activities	15	8
Net change in cash, cash equivalents and restricted cash	0	1
Cash, cash equivalents and restricted cash at beginning of period	2	1
Cash, cash equivalents and restricted cash at end of period	2	2
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(10)	(11)
Cash paid for income taxes, net	(1)	(2)
Supplemental disclosure of non-cash investing and financing transactions:
Accrued property, plant and equipment additions	14	16
Inventory transfers to property, plant and equipment	1	1
Allowance for equity funds used during construction	$ 1	$ 1