STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities
Net income	$ 218.0	$ 173.1
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	174.0	150.4
Demand side management program amortization	0.0	1.3
Deferred income taxes	16.2	14.4
Allowance for equity funds used during construction	(22.2)	(11.6)
Changes in operating assets and liabilities:
Accounts receivable	(26.5)	(25.1)
Accrued unbilled revenues	(10.4)	9.6
Inventories	(16.3)	7.0
Prepayments and other	6.0	0.6
Accounts payable	(15.1)	(0.9)
Net regulatory assets and liabilities	17.6	58.8
Other current liabilities	14.1	13.0
Pension and other employee benefit obligations	(17.6)	(7.9)
Change in other noncurrent assets	0.7	3.5
Change in other noncurrent liabilities	1.3	(0.2)
Net cash provided by operating activities	339.8	386.0
Investing activities
Utility capital/construction expenditures	(632.8)	(610.0)
Investments in utility money pool arrangement	133.0	46.0
Repayments from utility money pool arrangement	133.0	111.0
Net cash used in investing activities	(632.8)	(545.0)
Financing activities
(Repayments of) Proceeds from short-term borrowings, net	(42.0)	35.0
Proceeds from issuance of long-term debt, net	292.2	0.0
Borrowings under utility money pool arrangement	283.0	446.0
Repayments under utility money pool arrangement	(283.0)	(423.0)
Capital contributions from parent	400.8	181.4
Dividends paid to parent	(255.0)	(90.7)
Net cash provided by financing activities	396.0	148.7
Net change in cash and cash equivalents	103.0	(10.3)
Cash and cash equivalents at beginning of period	44.0	10.9
Cash and cash equivalents at end of period	147.0	0.6
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(60.3)	(57.9)
Cash paid for income taxes, net	(4.4)	(15.3)
Supplemental disclosure of non-cash investing and financing transactions:
Property, plant and equipment additions in accounts payable	67.5	54.6
Inventory transfer additions in PPE	18.7	17.0
Operating lease right-of-use assets	548.3	0.0
Allowance for equity funds used during construction	$ 22.2	$ 11.6