STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities
Net income	$ 112.9	$ 91.6
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	112.1	98.1
Demand side management program amortization	0.0	0.8
Deferred income taxes	3.3	(2.3)
Allowance for equity funds used during construction	(19.0)	(6.6)
Changes in operating assets and liabilities:
Accounts receivable	(1.3)	(25.3)
Accrued unbilled revenues	(11.3)	2.3
Inventories	(9.9)	7.9
Prepayments and other	5.2	0.7
Accounts payable	(24.5)	0.6
Net regulatory assets and liabilities	37.0	46.2
Other current liabilities	1.1	13.9
Pension and other employee benefit obligations	(16.3)	(7.9)
Other, net	0.5	0.0
Change in other noncurrent assets	(0.3)	4.4
Change in other noncurrent liabilities	0.5	(0.5)
Net cash provided by operating activities	190.0	223.9
Investing activities
Utility capital/construction expenditures	(364.2)	(471.7)
Investments in utility money pool arrangement	100.0	46.0
Repayments from utility money pool arrangement	0.0	111.0
Net cash used in investing activities	(464.2)	(406.7)
Financing activities
Proceeds from (repayments of) short-term borrowings, net	(42.0)	132.0
Proceeds from (repayments of) from issuance of long-term debt, net	292.8	0.0
Borrowings under utility money pool arrangement	283.0	180.0
Repayments under utility money pool arrangement	(283.0)	(80.0)
Capital contributions from parent	378.8	0.4
Dividends paid to parent	(137.7)	(60.1)
Net cash provided by (used in) financing activities	491.9	172.3
Net change in cash and cash equivalents	217.7	(10.5)
Cash and cash equivalents at beginning of period	44.0	10.9
Cash and cash equivalents at end of period	261.7	0.4
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(39.9)	(36.7)
Cash paid for income taxes, net	0.0	(7.6)
Supplemental disclosure of non-cash investing and financing transactions:
Property, plant and equipment additions in accounts payable	68.6	43.3
Inventory transfer additions in PPE	12.6	11.2
Operating lease right-of-use assets	548.3	0.0
Allowance for equity funds used during construction	$ 19.0	$ 6.6