Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment
Regulated Energy	$ 2,661.8	$ 2,418.5
Unregulated Energy	463.7	410.8
Other businesses	29.9	30.3
Total property, plant and equipment	3,155.4	2,859.6
Accumulated depreciation	567.6	516.4
Construction Work in Progress	148.1	113.2
Net property, plant and equipment	2,735.9	2,456.4
Current Assets
Cash and cash equivalents	7.9	4.9
Accounts Receivable, before Allowance for Credit Loss, Current	80.0	74.5
Allowance for uncollectible accounts	3.3	2.7
Trade and other receivables, net	76.7	71.8
Accrued Revenue	37.8	32.6
Propane inventory, at average cost	8.9	9.3
Other inventory, at average cost	18.0	19.9
Regulatory assets	23.9	19.5
Storage gas prepayments	3.8	4.7
Income taxes receivable	6.8	3.8
Prepaid expenses	17.3	15.4
Derivative assets, at fair value	0.6	1.0
Other current assets	2.6	2.8
Total current assets	204.3	185.7
Deferred Charges and Other Assets
Goodwill	507.7	508.2
Other intangible assets, net	15.0	16.9
Investments, Fair Value Disclosure	14.4	12.3
Operating Lease, Right-of-Use Asset	10.5	12.4
Regulatory assets	77.4	96.4
Receivables and other deferred charges	11.7	16.4
Total deferred charges and other assets	636.8	662.6
Total Assets	3,577.0	3,304.7
Stockholders’ equity
Preferred stock, par value $0.01 per share (authorized 2,000,000 shares), no shares issued and outstanding	0.0	0.0
Common stock, par value $0.4867 per share (authorized 50,000,000 shares)	11.1	10.8
Additional paid-in capital	830.5	749.4
Retained earnings	550.3	488.7
Accumulated other comprehensive loss	(1.7)	(2.8)
Deferred compensation obligation	9.8	9.1
Treasury Stock, Value	(9.8)	(9.1)
Total stockholders’ equity	1,390.2	1,246.1
Long-term debt, net of current maturities	1,261.7	1,187.1
Total capitalization	2,651.9	2,433.2
Current Liabilities
Current portion of long-term debt	25.5	18.5
Short-term borrowing	196.5	179.9
Accounts payable	78.3	77.5
Customer deposits and refunds	45.7	46.4
Accrued interest	4.8	7.0
Dividends payable	14.7	13.1
Accrued compensation	23.9	16.5
Regulatory liabilities	16.1	13.7
Derivative liabilities, at fair value	0.0	0.4
Other accrued liabilities	13.9	13.4
Total current liabilities	419.4	386.4
Deferred Credits and Other Liabilities
Deferred income taxes	296.1	259.1
Regulatory liabilities	184.0	195.3
Environmental liabilities	2.2	2.6
Other pension and benefit costs	13.2	15.3
Operating Lease, Liability, Noncurrent	8.7	10.6
Deferred investment tax credits and other liabilities	1.4	1.3
Total deferred credits and other liabilities	505.7	485.1
Commitments and Contingencies
Total Capitalization and Liabilities	3,577.0	3,304.7
Regulated Energy	2,661.8	2,418.5
Unregulated Energy	463.7	410.8
Other businesses	29.9	30.3
Total property, plant and equipment	3,155.4	2,859.6
Accumulated depreciation	567.6	516.4
Construction Work in Progress	148.1	113.2
Net property, plant and equipment	2,735.9	2,456.4
Cash and cash equivalents	7.9	4.9
Accounts Receivable, before Allowance for Credit Loss, Current	80.0	74.5
Allowance for uncollectible accounts	3.3	2.7
Trade and other receivables, net	76.7	71.8
Accrued Revenue	37.8	32.6
Propane inventory, at average cost	8.9	9.3
Other inventory, at average cost	18.0	19.9
Regulatory assets	23.9	19.5
Storage gas prepayments	3.8	4.7
Income taxes receivable	6.8	3.8
Prepaid expenses	17.3	15.4
Derivative assets, at fair value	0.6	1.0
Other current assets	2.6	2.8
Disposal Group, Including Discontinued Operation, Assets, Current	204.3	185.7
Goodwill	507.7	508.2
Other intangible assets, net	15.0	16.9
Investments, Fair Value Disclosure	14.4	12.3
Energy Marketing Contracts Assets, Noncurrent	0.1	0.0
Operating Lease, Right-of-Use Asset	10.5	12.4
Regulatory assets	77.4	96.4
Receivables and other deferred charges	11.7	16.4
Deferred Charges And Other Assets	636.8	662.6
Total identifiable assets	3,577.0	3,304.7
Preferred stock, par value $0.01 per share (authorized 2,000,000 shares), no shares issued and outstanding	0.0	0.0
Common stock, par value $0.4867 per share (authorized 50,000,000 shares)	11.1	10.8
Additional paid-in capital	830.5	749.4
Retained earnings	550.3	488.7
Accumulated other comprehensive loss	(1.7)	(2.8)
Deferred compensation obligation	9.8	9.1
Treasury Stock, Value	9.8	9.1
Stockholders' Equity Attributable to Parent	1,390.2	1,246.1
Long-term debt, net of current maturities	1,261.7	1,187.1
Total capitalization	2,651.9	2,433.2
Current portion of long-term debt	25.5	18.5
Short-term borrowing	196.5	179.9
Accounts payable	78.3	77.5
Customer deposits and refunds	45.7	46.4
Accrued interest	4.8	7.0
Dividends payable	14.7	13.1
Accrued compensation	23.9	16.5
Regulatory liabilities	16.1	13.7
Derivative liabilities, at fair value	0.0	0.4
Other accrued liabilities	13.9	13.4
Liabilities, Current	419.4	386.4
Deferred income taxes	296.1	259.1
Regulatory liabilities	184.0	195.3
Environmental liabilities	2.2	2.6
Other pension and benefit costs	13.2	15.3
Energy Marketing Contract Liabilities, Noncurrent	0.1	0.9
Operating Lease, Liability, Noncurrent	8.7	10.6
Deferred investment tax credits and other liabilities	1.4	1.3
Deferred Credits and Other Liabilities	505.7	485.1
Liabilities and Equity	3,577.0	3,304.7
Allowance for uncollectible accounts	3.3	2.7
Operating Lease, Liability, Noncurrent	$ 8.7	$ 10.6