Consolidated Statement of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Activities
Net Income		$ 174.1	$ 172.2	$ 155.8
AFUDC – Equity		(1.2)	(1.2)	(2.1)
Income from Equity Investments – Net of Dividends		(2.3)	(3.2)	(5.7)
Impairment of Goodwill	[1]	0.0	0.0	3.3
Change in Fair Value of Contingent Consideration	[2]	(2.0)	(0.7)	(13.6)
Deferred Fuel Adjustment Clause Charge		0.0	19.5	0.0
Loss (Gain) on Sales of Investments and Property, Plant and Equipment		1.0	0.4	(6.0)
Depreciation Expense		200.1	171.9	190.6
Amortization of PSAs		(23.6)	(23.6)	(22.3)
Amortization of Other Intangible Assets and Other Assets		10.4	10.2	10.3
Deferred Income Tax Expense (Benefit)		(15.8)	14.4	19.4
Share-Based and ESOP Compensation Expense		6.8	6.6	5.1
Defined Benefit Pension and Other Postretirement Benefit Expense		8.6	10.1	4.6
Bad Debt Expense		1.1	0.8	4.1
Provision for Interim Rate Refund		16.3	32.3	0.0
Provision for Tax Reform Refund		10.7	0.0	0.0
Changes in Operating Assets and Liabilities
Accounts Receivable		(10.7)	(8.0)	(4.7)
Inventories		55.5	11.9	13.3
Prepayments and Other		(4.0)	(5.3)	(6.9)
Accounts Payable		13.6	(7.5)	6.5
Other Current Liabilities		6.7	1.8	(10.9)
Cash Contributions to Defined Benefit Pension Plans		(15.0)	(1.7)	(6.3)
Changes in Regulatory and Other Non-Current Assets		6.7	33.7	(10.7)
Changes in Regulatory and Other Non-Current Liabilities		(3.9)	(31.7)	11.1
Cash from Operating Activities		433.1	402.9	334.9
Investing Activities
Proceeds from Sale of Available-for-sale Securities		10.2	10.1	9.0
Payments for Purchase of Available-for-sale Securities		(13.3)	(8.6)	(9.4)
Acquisitions of Subsidiaries – Net of Cash and Restricted Cash Acquired		0.0	(18.5)	(5.8)
Equity Investments		(39.2)	(7.8)	(5.4)
Additions to Property, Plant and Equipment		(312.4)	(208.5)	(265.6)
Other Investing Activities		5.7	4.3	5.1
Cash for Investing Activities		(349.0)	(229.0)	(272.1)
Financing Activities
Proceeds from Issuance of Common Stock		20.3	86.0	30.9
Proceeds from Issuance of Long-Term Debt		75.6	131.5	4.8
Repayments of Long-Term Debt		(95.5)	(189.6)	(57.7)
Acquisition of Non-Controlling Interest		0.0	0.0	(8.0)
Acquisition-Related Contingent Consideration Payments		0.0	(19.7)	(0.9)
Dividends on Common Stock		(115.0)	(108.7)	(102.7)
Other Financing Activities		(0.6)	(1.6)	(1.6)
Cash for Financing Activities		(115.2)	(102.1)	(135.2)
Change in Cash, Cash Equivalents and Restricted Cash		(31.1)	71.8	(72.4)
Cash, Cash Equivalents and Restricted Cash		$ 79.0	$ 110.1	$ 38.3

[1] See Goodwill and Intangible Assets.

[2] See Note 9. Fair Value.