Note 10 - Information by Operating Segment (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

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

	Gas Utility			Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended June 30, 2023
Operating Revenues:
Revenues from external customers	$	387.5		$	23.1		$	7.7	$	0.2		$	—		$	418.5
Intersegment revenues		0.3			—			9.7		4.1			(14.1	)		—
Total Operating Revenues		387.8			23.1			17.4		4.3			(14.1	)		418.5
Operating Expenses:
Natural gas		154.6			25.3			—		—			(10.1	)		169.8
Operation and maintenance		111.7			4.2			8.1		5.5			(4.0	)		125.5
Depreciation and amortization		61.7			0.3			2.1		0.2			—			64.3
Taxes, other than income taxes		45.9			0.4			0.7		(0.1	)		—			46.9
Total Operating Expenses		373.9			30.2			10.9		5.6			(14.1	)		406.5
Operating Income (Loss)	$	13.9		$	(7.1	)	$	6.5	$	(1.3	)	$	—		$	12.0
Net Economic (Loss) Earnings	$	(12.3	)	$	(2.5	)	$	3.6	$	(7.4	)	$	—		$	(18.6	)

	Gas Utility		Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended June 30, 2022
Operating Revenues:
Revenues from external customers	$	377.4	$	64.1		$	6.3	$	0.2		$	—		$	448.0
Intersegment revenues		—		—			8.3		3.9			(12.2	)		—
Total Operating Revenues		377.4		64.1			14.6		4.1			(12.2	)		448.0
Operating Expenses:
Natural gas		144.5		67.1			—		—			(8.3	)		203.3
Operation and maintenance		95.0		3.2			4.8		3.2			(3.9	)		102.3
Depreciation and amortization		58.1		0.3			1.8		0.2			—			60.4
Taxes, other than income taxes		43.0		0.4			0.6		0.1			—			44.1
Total Operating Expenses		340.6		71.0			7.2		3.5			(12.2	)		410.1
Operating Income (Loss)	$	36.8	$	(6.9	)	$	7.4	$	0.6		$	—		$	37.9
Net Economic Earnings (Loss)	$	4.2	$	0.4		$	4.3	$	(4.8	)	$	—		$	4.1

	Gas Utility		Gas Marketing			Midstream		Other			Eliminations			Consolidated
Nine Months Ended June 30, 2022
Operating Revenues:
Revenues from external customers	$	1,698.3	$	171.4		$	14.1	$	0.5		$	—		$	1,884.3
Intersegment revenues		—		—			27.2		11.6			(38.8	)		—
Total Operating Revenues		1,698.3		171.4			41.3		12.1			(38.8	)		1,884.3
Operating Expenses:
Natural gas		710.7		160.9			—		—			(27.1	)		844.5
Operation and maintenance		306.5		9.1			16.4		11.6			(11.7	)		331.9
Depreciation and amortization		169.2		1.0			5.6		0.4			—			176.2
Taxes, other than income taxes		150.3		0.8			2.1		0.1			—			153.3
Total Operating Expenses		1,336.7		171.8			24.1		12.1			(38.8	)		1,505.9
Operating Income (Loss)	$	361.6	$	(0.4	)	$	17.2	$	—		$	—		$	378.4
Net Economic Earnings (Loss)	$	240.6	$	15.3		$	9.8	$	(18.0	)	$	—		$	247.7

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

	Gas Utility		Gas Marketing		Midstream		Other			Eliminations			Consolidated
Nine Months Ended June 30, 2023
Operating Revenues:
Revenues from external customers	$	2,174.9	$	157.8	$	22.7	$	0.5		$	—		$	2,355.9
Intersegment revenues		0.4		—		26.4		11.9			(38.7	)		—
Total Operating Revenues		2,175.3		157.8		49.1		12.4			(38.7	)		2,355.9
Operating Expenses:
Natural gas		1,099.5		102.8		—		—			(26.8	)		1,175.5
Operation and maintenance		350.9		16.2		20.1		14.4			(11.9	)		389.7
Depreciation and amortization		181.6		1.0		6.0		0.4			—			189.0
Taxes, other than income taxes		176.2		1.1		1.9		—			—			179.2
Total Operating Expenses		1,808.2		121.1		28.0		14.8			(38.7	)		1,933.4
Operating Income (Loss)	$	367.1	$	36.7	$	21.1	$	(2.4	)	$	—		$	422.5
Net Economic Earnings (Loss)	$	234.5	$	45.0	$	11.6	$	(25.4	)	$	—		$	265.7

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6		$	227.9
Adjustments, pre-tax:
Fair value and timing adjustments		3.4			7.3			22.2			20.9
Acquisition activities		0.5			—			0.5			—
Income tax adjustments		(0.9	)		(1.8	)		(5.6	)		(1.1	)
Net Economic (Loss) Earnings	$	(18.6	)	$	4.1		$	265.7		$	247.7

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

	June 30,			September 30,			June 30,
	2023			2022			2022
Total Assets:
Gas Utility	$	8,283.2		$	8,042.8		$	7,854.7
Gas Marketing		316.6			638.7			595.5
Midstream		533.3			446.0			430.9
Other		2,134.1			2,449.2			2,222.0
Eliminations		(1,229.7	)		(1,493.0	)		(1,319.2	)
Total Assets	$	10,037.5		$	10,083.7		$	9,783.9