Information by Operating Segment (Tables)

3 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Schedule of Operating Segment Information

	Gas Utility		Gas Marketing		Other			Eliminations			Consolidated
Three Months Ended December 31, 2020
Operating Revenues:
Revenues from external customers	$	497.2	$	10.7	$	4.7		$	—		$	512.6
Intersegment revenues		1.0		14.1		12.0			(27.1	)		—
Total Operating Revenues		498.2		24.8		16.7			(27.1	)		512.6
Operating Expenses:
Natural gas		204.3		0.7		—			(23.8	)		181.2
Operation and maintenance		103.0		3.3		8.6			(3.3	)		111.6
Depreciation and amortization		48.6		0.3		1.9			—			50.8
Taxes, other than income taxes		35.5		0.2		0.4			—			36.1
Total Operating Expenses		391.4		4.5		10.9			(27.1	)		379.7
Operating Income	$	106.8	$	20.3	$	5.8		$	—		$	132.9
Net Economic Earnings (Loss)	$	76.4	$	3.3	$	(2.8	)	$	—		$	76.9

	Gas Utility		Gas Marketing		Other			Eliminations			Consolidated
Three Months Ended December 31, 2019
Operating Revenues:
Revenues from external customers	$	530.6	$	32.3	$	4.0		$	—		$	566.9
Intersegment revenues		0.1		—		7.1			(7.2	)		—
Total Operating Revenues		530.7		32.3		11.1			(7.2	)		566.9
Operating Expenses:
Natural gas		241.5		24.5		0.1			(4.2	)		261.9
Operation and maintenance		108.6		3.1		7.9			(3.0	)		116.6
Depreciation and amortization		46.4		—		1.1			—			47.5
Taxes, other than income taxes		37.9		0.3		0.4			—			38.6
Total Operating Expenses		434.4		27.9		9.5			(7.2	)		464.6
Operating Income	$	96.3	$	4.4	$	1.6		$	—		$	102.3
Net Economic Earnings (Loss)	$	69.1	$	6.1	$	(3.4	)	$	—		$	71.8

	December 31,			September 30,			December 31,
	2020			2020			2019
Total Assets:
Gas Utility	$	6,932.3		$	6,716.2		$	6,306.0
Gas Marketing		204.8			182.7			242.7
Other		2,462.3			2,443.5			2,450.5
Eliminations		(1,083.8	)		(1,101.2	)		(1,038.2	)
Total Assets	$	8,515.6		$	8,241.2		$	7,961.0

Schedule of Reconciliation of Consolidated Net Economic Earnings to Consolidated Net Income

The following table reconciles the Company’s net economic earnings to net income.

	Three Months Ended December 31,
	2020			2019
Net Income	$	88.9		$	67.0
Adjustments, pre-tax:
Provision for ISRS rulings		—			2.6
Fair value and timing adjustments		(16.0	)		3.7
Income tax effect of adjustments		4.0			(1.5	)
Net Economic Earnings	$	76.9		$	71.8