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Business Segment Information (Tables)

9 Months Ended

Sep. 30, 2025

Segment Reporting Information, Additional Information [Abstract]

Segment information included in Consolidated Statements of Income

Segment information was as follows:

	Consolidating Income Statement
Three Months Ended September 30, 2025	Electric Utilities			Gas Utilities			Corporate and Other			Total
	(in millions)
Revenue -
External Customers	$	247.3		$	182.9		$	—		$	430.2
Inter-segment		2.4			1.5			(3.9	)		—
Total revenue		249.7			184.4			(3.9	)		430.2
Fuel, purchased power and cost of natural gas sold		69.8			42.3			(0.1	)		112.0
Operations and maintenance (a) -
Direct		36.1			38.9			0.7			75.7
Allocated		33.7			41.4			—			75.1
Depreciation and amortization		38.3			33.2			—			71.5
Taxes other than income taxes		9.4			7.8			—			17.2
Operating income (loss)	$	62.4		$	20.8		$	(4.5	)	$	78.7
Interest expense, net											(49.4	)
Other income (expense), net											0.6
Income tax (expense)											(4.0	)
Net income											25.9
Net income attributable to non-controlling interest											(1.0	)
Net income available for common stock										$	24.9

	Consolidating Income Statement
Three Months Ended September 30, 2024	Electric Utilities			Gas Utilities			Corporate and Other			Total
	(in millions)
Revenue -
External Customers	$	229.6		$	172.0		$	—		$	401.6
Inter-segment		2.9			1.6			(4.5	)		—
Total revenue		232.5			173.6			(4.5	)		401.6
Fuel, purchased power and cost of natural gas sold		54.9			39.7			(0.1	)		94.5
Operations and maintenance (a) -
Direct		32.4			41.3			(4.3	)		69.4
Allocated		32.7			43.5			—			76.2
Depreciation and amortization		38.0			31.3			—			69.3
Taxes other than income taxes		9.4			6.9			0.1			16.4
Operating income	$	65.1		$	10.9		$	(0.2	)	$	75.8
Interest expense, net											(45.2	)
Other income (expense), net											(1.3	)
Income tax (expense)											(2.9	)
Net income											26.4
Net income attributable to non-controlling interest											(2.0	)
Net income available for common stock										$	24.4

	Consolidating Income Statement
Nine Months Ended September 30, 2025	Electric Utilities			Gas Utilities			Corporate and Other			Total
	(in millions)
Revenue -
External Customers	$	699.1		$	975.4		$	—		$	1,674.5
Inter-segment		7.2			4.5			(11.7	)		—
Total revenue		706.3			979.9			(11.7	)		1,674.5
Fuel, purchased power and cost of natural gas sold		192.2			403.7			(0.2	)		595.7
Operations and maintenance (a) -
Direct		107.9			121.9			(4.1	)		225.7
Allocated		99.9			126.6			—			226.5
Depreciation and amortization		113.0			97.6			(0.1	)		210.5
Taxes other than income taxes		27.6			22.4			—			50.0
Operating income (loss)	$	165.7		$	207.7		$	(7.3	)	$	366.1
Interest expense, net											(149.6	)
Other income (expense), net											1.1
Income tax (expense)											(26.5	)
Net income											191.1
Net income attributable to non-controlling interest											(4.5	)
Net income available for common stock										$	186.6

	Consolidating Income Statement
Nine Months Ended September 30, 2024	Electric Utilities			Gas Utilities			Corporate and Other			Total
	(in millions)
Revenue -
External Customers	$	651.0		$	879.6		$	—		$	1,530.6
Inter-segment		8.8			4.6			(13.4	)		—
Total revenue		659.8			884.2			(13.4	)		1,530.6
Fuel, purchased power and cost of natural gas sold		155.7			362.9			(0.4	)		518.2
Operations and maintenance (a) -
Direct		97.1			117.5			(12.3	)		202.3
Allocated		93.4			125.1			—			218.5
Depreciation and amortization		108.9			92.8			0.1			201.8
Taxes other than income taxes		28.7			21.3			—			50.0
Operating income (loss)	$	176.0		$	164.6		$	(0.8	)	$	339.8
Interest expense, net											(131.9	)
Other income (expense), net											(1.7	)
Income tax (expense)											(23.6	)
Net income											182.6
Net income attributable to non-controlling interest											(7.6	)
Net income available for common stock										$	175.0

(a)Direct and Allocated Operations and maintenance expenses for our operating segments are regularly provided to the CODM. Direct Operations and maintenance expense represents the costs incurred directly by our operating segments. Allocated Operations and maintenance expense represent costs incurred by BHSC for various direct and indirect support services provided to our operating segments. Pursuant to the BHSC Cost Allocation Manual, indirect cost allocations are determined in accordance with the Public Utility Holding Company Act of 2005.

Segment information included in Consolidated Balance Sheets

Capital Expenditures (a) for the nine months ended September 30,	2025			2024
	(in millions)
Electric Utilities	$	334.0		$	246.8
Gas Utilities		267.6			308.2
Corporate and Other		6.9			10.8
Total capital expenditures	$	608.5		$	565.8

(a)Includes accruals for property, plant, and equipment as disclosed in supplemental cash flow information in the Consolidated Statements of Cash Flows in the Consolidated Financial Statements. Capital expenditures are presented net of CIACs in the Consolidated Statements of Cash Flows.

X

- Definition

Tabular disclosure of all significant reconciling items in the reconciliation of total assets from reportable segments to the entity's consolidated assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-31

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-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-25

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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