Information by Operating Segment (Tables)

3 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of operating segment information

	Gas Utility		Gas Marketing		Other			Eliminations			Consolidated
Three Months Ended December 31, 2018
Operating Revenues:
Revenues from external customers	$	573.8	$	25.8	$	2.4		$	—		$	602.0
Intersegment revenues		1.4		—		3.0			(4.4	)		—
Total Operating Revenues		575.2		25.8		5.4			(4.4	)		602.0
Operating Expenses:
Gas Utility
Natural and propane gas		291.8		—		—			(40.1	)		251.7
Operation and maintenance		104.9		—		—			(2.4	)		102.5
Depreciation and amortization		43.7		—		—			—			43.7
Taxes, other than income taxes		39.2		—		—			—			39.2
Total Gas Utility Operating Expenses		479.6		—		—			(42.5	)		437.1
Gas Marketing and Other		—		13.3		8.4			38.1			59.8
Total Operating Expenses		479.6		13.3		8.4			(4.4	)		496.9
Operating Income (Loss)	$	95.6	$	12.5	$	(3.0	)	$	—		$	105.1
Net Economic Earnings (Loss)	$	66.4	$	8.3	$	(8.8	)	$	—		$	65.9

	Gas Utility		Gas Marketing		Other			Eliminations			Consolidated
Three Months Ended December 31, 2017
Operating Revenues:
Revenues from external customers	$	541.9	$	19.6	$	0.3		$	—		$	561.8
Intersegment revenues		0.1		—		2.5			(2.6	)		—
Total Operating Revenues		542.0		19.6		2.8			(2.6	)		561.8
Operating Expenses:
Gas Utility
Natural and propane gas		263.4		—		—			(22.6	)		240.8
Operation and maintenance		100.9		—		—			(1.9	)		99.0
Depreciation and amortization		40.3		—		—			—			40.3
Taxes, other than income taxes		36.7		—		—			—			36.7
Total Gas Utility Operating Expenses		441.3		—		—			(24.5	)		416.8
Gas Marketing and Other		—		14.6		4.5			21.9			41.0
Total Operating Expenses		441.3		14.6		4.5			(2.6	)		457.8
Operating Income (Loss)	$	100.7	$	5.0	$	(1.7	)	$	—		$	104.0
Net Economic Earnings (Loss)	$	59.5	$	3.6	$	(5.2	)	$	—		$	57.9

The Company’s total assets by segment were as follows:

	December 31,			September 30,			December 31,
	2018			2018			2017
Total Assets:
Gas Utility	$	5,843.7		$	5,606.7		$	5,611.7
Gas Marketing		416.7			295.3			233.5
Other		2,535.6			2,508.0			2,427.7
Eliminations		(1,563.8	)		(1,566.4	)		(1,571.8	)
Total Assets	$	7,232.2		$	6,843.6		$	6,701.1

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,
	2018			2017
Net Income	$	67.3		$	116.0
Adjustments, pre-tax:
Unrealized (gain) loss on energy-related derivatives		(2.2	)		0.8
Realized gain on economic hedges prior to the sale of the physical commodity		—			(0.1	)
Acquisition, divestiture and restructuring activities		0.4			1.7
Income tax effect of adjustments		0.4			(0.6	)
Effect of the Tax Cuts and Jobs Act		—			(59.9	)
Net Economic Earnings	$	65.9		$	57.9