Note 14 - Information by Operating Segment (Tables)

12 Months Ended

Sep. 30, 2023

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Gas		Gas
2023	Utility		Marketing		Midstream		Other			Eliminations			Consolidated
Revenues from external customers	$	2,456.6	$	179.1	$	29.9	$	0.7		$	—		$	2,666.3
Intersegment revenues		0.3		—		36.2		16.0			(52.5	)		—
Total Operating Revenues		2,456.9		179.1		66.1		16.7			(52.5	)		2,666.3
Depreciation and amortization expense		244.4		1.5		8.4		0.5			—			254.8
Interest expense		139.9		—		8.6		72.1			(34.9	)		185.7
Income tax expense (benefit)		32.7		12.8		3.8		(10.5	)		—			38.8
Net economic earnings (loss)		200.5		47.6		14.1		(34.1	)		—			228.1
Capital expenditures		588.6		0.4		73.6		(0.1	)		—			662.5

	Gas		Gas
2022	Utility		Marketing		Midstream		Other			Eliminations			Consolidated
Revenues from external customers	$	1,945.6	$	234.9	$	17.4	$	0.6		$	—		$	2,198.5
Intersegment revenues		0.5		—		35.7		15.5			(51.7	)		—
Total Operating Revenues		1,946.1		234.9		53.1		16.1			(51.7	)		2,198.5
Depreciation and amortization expense		227.9		1.4		7.5		0.5			—			237.3
Interest expense		86.4		—		4.9		37.3			(8.8	)		119.8
Income tax expense (benefit)		49.6		11.9		4.5		(7.1	)		—			58.9
Net economic earnings (loss)		202.7		27.0		11.1		(24.5	)		—			216.3
Capital expenditures		528.6		0.9		22.6		0.1			—			552.2

	Gas		Gas
2021	Utility		Marketing		Midstream		Other			Eliminations			Consolidated
Revenues from external customers	$	2,118.2	$	96.5	$	19.9	$	0.9		$	—		$	2,235.5
Intersegment revenues		1.1		—		32.7		14.2			(48.0	)		—
Total Operating Revenues		2,119.3		96.5		52.6		15.1			(48.0	)		2,235.5
Depreciation and amortization expense		204.4		1.2		6.9		0.6			—			213.1
Interest expense		74.7		—		4.0		29.3			(1.4	)		106.6
Income tax expense (benefit)		56.9		13.4		4.4		(6.2	)		—			68.5
Net economic earnings (loss)		230.6		47.0		11.1		(22.4	)		—			266.3
Capital expenditures		590.4		0.7		33.0		0.7			—			624.8

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

Total Assets at End of Year	2023			2022			2021
Gas Utility	$	8,486.7		$	8,042.8		$	7,615.4
Gas Marketing		332.0			638.7			466.1
Midstream		574.3			446.0			413.8
Other		2,533.3			2,705.5			2,193.3
Eliminations		(1,612.7	)		(1,749.3	)		(1,332.2	)
Total Assets	$	10,313.6		$	10,083.7		$	9,356.4

Reconciliation Of Consolidated Net Economic Earnings To Consolidated Net Income [Table Text Block]

Reconciliation of Consolidated Net Income to Consolidated Net Economic Earnings	2023			2022			2021
Net Income	$	217.5		$	220.8		$	271.7
Adjustments, pre-tax:
Missouri regulatory adjustments		—			—			(9.0	)
Fair value and timing adjustments		11.4			(11.4	)		3.3
Acquisition and divestiture activities		2.5			—			(1.3	)
Income tax adjustments		(3.3	)		6.9			1.6
Net Economic Earnings	$	228.1		$	216.3		$	266.3