CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Activities:
Net Income	$ 15.2	$ 26.5
Adjustments to Reconcile Net Income to Cash Provided by Operating Activities:
Depreciation and Amortization	13.5	13.8
Deferred Tax Provision	4.7	8.2
Gain on Divestiture, Net (See Note 1)		(13.4)
Changes in Working Capital Items:
Accounts Receivable	(7.5)	(7.1)
Accrued Revenue	11.4	14.5
Exchange Gas Receivable	3.9	7.7
Regulatory Liabilities	3.1	3.5
Accounts Payable	(11.1)	(9.6)
Other Changes in Working Capital Items	(3.0)	0.3
Deferred Regulatory and Other Charges	(0.4)	(6.9)
Other, Net	(1.9)	0.3
Cash Provided by Operating Activities	27.9	37.8
Investing Activities:
Property, Plant and Equipment Additions	(16.8)	(10.9)
Proceeds from Divestiture, Net (See Note 1)		13.4
Cash Provided by (Used in) Investing Activities	(16.8)	2.5
Financing Activities:
Proceeds from (Repayment of) Short-Term Debt, Net	13.0	(17.0)
Repayment of Long-Term Debt	(14.4)	(13.4)
Increase (Decrease) in Capital Lease Obligations	0.2	(0.9)
Net Decrease in Exchange Gas Financing	(3.6)	(7.3)
Dividends Paid	(5.6)	(5.5)
Proceeds from Issuance of Common Stock	0.3	0.3
Cash (Used in) Financing Activities	(10.1)	(43.8)
Net Increase (Decrease) in Cash and Cash Equivalents	1.0	(3.5)
Cash and Cash Equivalents at Beginning of Period	5.2	7.8
Cash and Cash Equivalents at End of Period	6.2	4.3
Supplemental Cash Flow Information:
Interest Paid	3.6	3.6
Income Taxes Paid
Payments on Capital Leases	0.1	0.8
Non-cash Investing Activity:
Capital Expenditures Included in Accounts Payable	0.5	0.7
Right-of-Use Assets Obtained in Exchange for Lease Obligations	$ 0.9	$ 3.9