Note 9 - Information by Operating Segment (Tables)

3 Months Ended

Dec. 31, 2022

Notes Tables

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

	Gas Utility		Gas Marketing		Midstream		Other			Eliminations			Consolidated
Three Months Ended December 31, 2022
Operating Revenues:
Revenues from external customers	$	733.0	$	74.1	$	6.8	$	0.1		$	—		$	814.0
Intersegment revenues		—		—		8.4		3.9			(12.3	)		—
Total Operating Revenues		733.0		74.1		15.2		4.0			(12.3	)		814.0
Operating Expenses:
Natural gas		401.6		26.0		—		—			(8.4	)		419.2
Operation and maintenance		119.9		6.3		5.8		4.0			(3.9	)		132.1
Depreciation and amortization		59.7		0.3		1.9		0.2			—			62.1
Taxes, other than income taxes		49.9		0.1		0.4		—			—			50.4
Total Operating Expenses		631.1		32.7		8.1		4.2			(12.3	)		663.8
Operating Income (Loss)	$	101.9	$	41.4	$	7.1	$	(0.2	)	$	—		$	150.2
Net Economic Earnings (Loss)	$	62.9	$	25.7	$	3.8	$	(7.3	)	$	—		$	85.1

	Gas Utility		Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended December 31, 2021
Operating Revenues:
Revenues from external customers	$	503.5	$	47.9		$	3.8	$	0.2		$	—		$	555.4
Intersegment revenues		—		—			9.1		3.5			(12.6	)		—
Total Operating Revenues		503.5		47.9			12.9		3.7			(12.6	)		555.4
Operating Expenses:
Natural gas		210.2		48.0			—		—			(9.0	)		249.2
Operation and maintenance		107.3		2.7			5.8		4.2			(3.6	)		116.4
Depreciation and amortization		54.6		0.3			1.9		0.1			—			56.9
Taxes, other than income taxes		37.0		—			0.6		—			—			37.6
Total Operating Expenses		409.1		51.0			8.3		4.3			(12.6	)		460.1
Operating Income (Loss)	$	94.4	$	(3.1	)	$	4.6	$	(0.6	)	$	—		$	95.3
Net Economic Earnings (Loss)	$	67.2	$	0.5		$	2.5	$	(7.6	)	$	—		$	62.6

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

	Three Months Ended December 31,
	2022			2021
Net Income	$	91.0		$	55.7
Adjustments, pre-tax:
Fair value and timing adjustments		(7.8	)		3.7
Income tax adjustments		1.9			3.2
Net Economic Earnings	$	85.1		$	62.6

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

	December 31,			September 30,			December 31,
	2022			2022			2021
Total Assets:
Gas Utility	$	8,355.1		$	8,042.8		$	7,882.1
Gas Marketing		492.4			638.7			424.4
Midstream		466.6			446.0			421.7
Other		2,882.8			2,449.2			1,995.9
Eliminations		(1,869.2	)		(1,493.0	)		(1,073.6	)
Total Assets	$	10,327.7		$	10,083.7		$	9,650.5