CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities
Net income	$ 516	$ 455
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	560	482
Deferred income taxes	38	26
Amortization of investment tax credits	(2)	(2)
Allowance for equity funds used during construction	(19)	(30)
Provision for bad debts	28	16
Changes in operating assets and liabilities:
Accounts receivable	(38)	(19)
Accrued unbilled revenues	49	72
Inventories	(58)	(11)
Other current assets	2	(10)
Accounts payable	25	(51)
Net regulatory assets and liabilities	(544)	31
Other current liabilities	(49)	(41)
Pension and other employee benefit obligations	(53)	(45)
Other, net	(40)	(15)
Net cash provided by operating activities	415	858
Investing activities
Utility capital/construction expenditures	(1,098)	(1,293)
Investments in utility money pool arrangement	(273)	(366)
Repayments from utility money pool arrangement	243	366
Net cash used in investing activities	(1,128)	(1,293)
Financing activities
Repayments of short-term borrowings, net	(136)	0
Borrowings under utility money pool arrangement	514	1,382
Repayments under utility money pool arrangement	(571)	(1,360)
Proceeds from issuance of long-term debt	738	735
Repayments of long-term debt	0	(400)
Capital contributions from parent	567	788
Dividends paid to parent	(340)	(704)
Net cash provided by financing activities	772	441
Net change in cash, cash equivalents and restricted cash	59	6
Cash, cash equivalents and restricted cash at beginning of period	28	11
Cash, cash equivalents and restricted cash at end of period	87	17
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(195)	(184)
Cash paid for income taxes, net	(14)	(17)
Supplemental disclosure of non-cash investing and financing transactions:
Accrued property, plant and equipment additions	170	159
Inventory transfers to property, plant and equipment	11	26
Operating lease right-of-use assets	4	14
Allowance for equity funds used during construction	$ 19	$ 30