Information by Operating Segment (Tables)

6 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule of operating segment information

	Gas Utility		Gas Marketing		Other			Eliminations			Consolidated
Three Months Ended March 31, 2019
Operating Revenues:
Revenues from external customers	$	776.7	$	25.4	$	1.4		$	—		$	803.5
Intersegment revenues		0.1		0.1		2.9			(3.1	)		—
Total Operating Revenues		776.8		25.5		4.3			(3.1	)		803.5
Operating Expenses:
Gas Utility
Natural and propane gas		366.7		—		—			(29.3	)		337.4
Operation and maintenance		112.0		—		—			(2.5	)		109.5
Depreciation and amortization		44.4		—		—			—			44.4
Taxes, other than income taxes		57.4		—		—			—			57.4
Total Gas Utility Operating Expenses		580.5		—		—			(31.8	)		548.7
Gas Marketing and Other		—		8.7		7.9			28.7			45.3
Total Operating Expenses		580.5		8.7		7.9			(3.1	)		594.0
Operating Income (Loss)	$	196.3	$	16.8	$	(3.6	)	$	—		$	209.5
Net Economic Earnings (Loss)	$	146.7	$	6.2	$	(5.0	)	$	—		$	147.9

	Gas Utility		Gas Marketing		Other			Eliminations			Consolidated
Three Months Ended March 31, 2018
Operating Revenues:
Revenues from external customers	$	790.6	$	21.3	$	1.5		$	—		$	813.4
Intersegment revenues		0.2		—		2.9			(3.1	)		—
Total Operating Revenues		790.8		21.3		4.4			(3.1	)		813.4
Operating Expenses:
Gas Utility
Natural and propane gas		403.2		—		—			(19.5	)		383.7
Operation and maintenance		137.5		—		—			(2.2	)		135.3
Depreciation and amortization		41.1		—		—			—			41.1
Taxes, other than income taxes		58.0		—		—			—			58.0
Total Gas Utility Operating Expenses		639.8		—		—			(21.7	)		618.1
Gas Marketing and Other		—		20.2		6.4			18.6			45.2
Total Operating Expenses		639.8		20.2		6.4			(3.1	)		663.3
Operating Income (Loss)	$	151.0	$	1.1	$	(2.0	)	$	—		$	150.1
Net Economic Earnings (Loss)	$	131.7	$	10.2	$	(4.7	)	$	—		$	137.2

	Gas Utility		Gas Marketing		Other			Eliminations			Consolidated
Six Months Ended March 31, 2019
Operating Revenues:
Revenues from external customers	$	1,350.5	$	51.2	$	3.8		$	—		$	1,405.5
Intersegment revenues		1.5		0.1		5.9			(7.5	)		—
Total Operating Revenues		1,352.0		51.3		9.7			(7.5	)		1,405.5
Operating Expenses:
Gas Utility
Natural and propane gas		658.5		—		—			(69.4	)		589.1
Operation and maintenance		216.9		—		—			(4.9	)		212.0
Depreciation and amortization		88.1		—		—			—			88.1
Taxes, other than income taxes		96.6		—		—			—			96.6
Total Gas Utility Operating Expenses		1,060.1		—		—			(74.3	)		985.8
Gas Marketing and Other		—		22.0		16.3			66.8			105.1
Total Operating Expenses		1,060.1		22.0		16.3			(7.5	)		1,090.9
Operating Income (Loss)	$	291.9	$	29.3	$	(6.6	)	$	—		$	314.6
Net Economic Earnings (Loss)	$	213.1	$	14.5	$	(13.8	)	$	—		$	213.8
	Gas Utility		Gas Marketing		Other			Eliminations			Consolidated
Six Months Ended March 31, 2018
Operating Revenues:
Revenues from external customers	$	1,332.5	$	40.9	$	1.8		$	—		$	1,375.2
Intersegment revenues		0.3		—		5.4			(5.7	)		—
Total Operating Revenues		1,332.8		40.9		7.2			(5.7	)		1,375.2
Operating Expenses:
Gas Utility
Natural and propane gas		666.6		—		—			(42.1	)		624.5
Operation and maintenance		238.4		—		—			(4.1	)		234.3
Depreciation and amortization		81.4		—		—			—			81.4
Taxes, other than income taxes		94.7		—		—			—			94.7
Total Gas Utility Operating Expenses		1,081.1		—		—			(46.2	)		1,034.9
Gas Marketing and Other		—		34.8		10.9			40.5			86.2
Total Operating Expenses		1,081.1		34.8		10.9			(5.7	)		1,121.1
Operating Income (Loss)	$	251.7	$	6.1	$	(3.7	)	$	—		$	254.1
Net Economic Earnings (Loss)	$	191.2	$	13.8	$	(9.9	)	$	—		$	195.1

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

	March 31,			September 30,			March 31,
	2019			2018			2018
Total Assets:
Gas Utility	$	5,850.1		$	5,606.7		$	5,484.3
Gas Marketing		366.7			295.3			208.6
Other		2,396.8			2,508.0			2,211.9
Eliminations		(1,340.0	)		(1,566.4	)		(1,318.0	)
Total Assets	$	7,273.6		$	6,843.6		$	6,586.8

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 March 31,						Six Months Ended March 31,
	2019			2018			2019			2018
Net Income	$	154.6		$	98.2		$	221.9		$	214.2
Adjustments, pre-tax:
Missouri regulatory adjustments		—			30.6			—			30.6
Unrealized (gain) loss on energy-related derivatives		(9.1	)		11.8			(11.3	)		12.6
Realized gain on economic hedges prior to the sale of the physical commodity		—			(0.2	)		—			(0.3	)
Acquisition, divestiture and restructuring activities		—			2.0			0.4			3.7
Income tax effect of adjustments		2.4			(11.1	)		2.8			(11.7	)
Effect of the Tax Cuts and Jobs Act		—			5.9			—			(54.0	)
Net Economic Earnings	$	147.9		$	137.2		$	213.8		$	195.1