Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Operating Revenues
Regulated Energy		$ 199.6	$ 168.4
Unregulated Energy		106.7	83.1
Total Operating Revenues		298.7	245.7
Operating Expenses
Regulated natural gas and electric costs		71.5	49.9
Unregulated propane and natural gas costs		44.8	31.3
Operations		58.0	51.6
Transaction-related expenses		0.3	0.9
Maintenance		5.4	5.9
Depreciation and amortization		22.5	17.0
Other taxes		9.4	9.5
Total Operating Expenses		211.9	166.1
Total operating income		86.8	79.6
Other income, net		0.6	0.2
Interest charges		18.1	17.0
Income Before Income Taxes		69.3	62.8
Income taxes		18.4	16.6
Net Income		$ 50.9	$ 46.2
Weighted Average Common Shares Outstanding:
Basic (shares)	[1]	22,957,000	22,250,000
Diluted (shares)		23,041,000	22,306,000
Earnings Per Share of Common Stock:
Income (Loss) from Continuing Operations, Per Basic Share		$ 2.22	$ 2.07
Basic (in dollars per share)		2.22	2.07
Earnings Per Share, Diluted [Abstract]
Income (Loss) from Continuing Operations, Per Diluted Share		2.21	2.07
Diluted (in dollars per share)		$ 2.21	$ 2.07
Other Operating Revenue		$ (7.6)	$ (5.8)

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