INFORMATION BY OPERATING SEGMENT (Tables)

12 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Schedule of operating segment information

	Gas Utility		Gas Marketing			Other				Eliminations			Consolidated
($ Millions)
Fiscal 2014
Revenues from external customers	$	1,462.6	$	162.6		$	2.0			$	—		$	1,627.2
Intersegment revenues	5.2		84.0			1.8				(91.0		)	—
Total Operating Revenues	1,467.8		246.6			3.8				(91.0		)	1,627.2
Operating Expenses
Gas Utility
Natural and Propane Gas	821.8		—			—				(90.1		)	731.7
Other Operation and Maintenance	288.7		—			—				(0.9		)	287.8
Depreciation and Amortization	82.4		—			—				—			82.4
Taxes, Other than Income Taxes	112.0		—			—				—			112.0
Total Gas Utility Operating Expenses	1,304.9		—			—				(91.0		)	1,213.9
Gas Marketing	—		226.4		(a)					—			226.4
Other	—		—			20.5			(b)	—			20.5
Total Operating Expenses	1,304.9		226.4			20.5				(91.0		)	1,460.8
Operating Income	162.9		20.2			(16.7		)		—			166.4
Net economic earnings	92.8		10.2			(2.9		)		—			100.1
Capital expenditures	168.6		—			2.4				—			171.0
Fiscal 2013
Revenues from external customers	$	847.2	$	165.1		$	4.7			$	—		$	1,017.0
Intersegment revenues	10.6		24.3			1.5				(36.4		)	—
Total Operating Revenues	857.8		189.4			6.2				(36.4		)	1,017.0
Operating Expenses
Gas Utility
Natural and Propane Gas	469.1		—			—				(35.7		)	433.4
Other Operation and Maintenance	180.7		—			—				(0.4		)	180.3
Depreciation and Amortization	48.3		—			—				—			48.3
Taxes, Other than Income Taxes	60.1		—			—				—			60.1
Total Gas Utility Operating Expenses	758.2		—			—				(36.1		)	722.1
Gas Marketing	—		176.6		(a)	—				—			176.6
Other	—		—			22.1			(b)	(0.3		)	21.8
Total Operating Expenses	758.2		176.6			22.1				(36.4		)	920.5
Operating Income	99.6		12.8			(15.9		)		—			96.5
Net economic earnings	56.6		8.9			(0.5		)		—			65.0
Capital Expenditures	128.5		—			2.3				—			130.8

	Gas Utility		Gas Marketing			Other			Eliminations			Consolidated
($ Millions)
Fiscal 2012
Revenues from external customers	$	763.5	$	358.1		$	3.9		$	—		$	1,125.5
Intersegment revenues	1.2		15.4			1.0			(17.6		)	—
Total Operating Revenues	764.7		373.5			4.9			(17.6		)	1,125.5
Operating Expenses
Gas Utility
Natural and Propane Gas	414.8		—			—			(17.5		)	397.3
Other Operation and Maintenance	167.4		—			—			—			167.4
Depreciation and Amortization	40.7		—			—			—			40.7
Taxes, Other than Income Taxes	53.7		—			—			—			53.7
Total Gas Utility Operating Expenses	676.6		—			—			(17.5		)	659.1
Gas Marketing	—		353.3		(a)	—			—			353.3
Other	—		—			2.6		(b)	(0.1		)	2.5
Total Operating Expenses	676.6		353.3			2.6			(17.6		)	1,014.9
Operating Income	88.1		20.2			2.3			—			110.6
Net economic earnings	48.1		12.3			2.2			—			62.6
Capital expenditures	106.7		0.1			2.0			—			108.8

(a) Depreciation and amortization for Gas Marketing are included in Gas Marketing Expenses on the Statements of Consolidated Income ($0.4 for fiscal year 2014, $0.3 for fiscal year 2013, and $0.3 for fiscal year 2012).

(b) Depreciation, amortization, and accretion for Other is included in the Other Operating Expenses on the Statements of Consolidated Income ($0.5 for fiscal year 2014, $0.6 for fiscal year 2013 and $0.3 for fiscal year 2012).

Total Assets
($ Millions)	2014			2013			2012
Gas Utility	$	4,520.0		$	2,981.0		$	1,759.0
Gas Marketing	156.7			163.9			190.7
Other	1,575.7			115.6			102.2
Eliminations	(1,178.4		)	(135.1		)	(171.6		)
Total Assets	$	5,074.0		$	3,125.4		$	1,880.3

Schedule of the reconciliation of consolidated net economic earnings to consolidated net income

Reconciliation of Consolidated Net Income to Consolidated Net Economic Earnings
($ Millions)	2014			2013		2012
Net Income (GAAP)	$	84.6		$	52.8	$	62.6
Unrealized loss (gain) on energy-related      derivatives	(0.9		)	0.5		(0.3		)
Lower of cost or market inventory adjustments	(0.7		)	0.9		—
Realized (gain) loss on economic hedges prior      to the sale of the physical commodity	(0.2		)	—		0.2
Acquisition, divestiture and restructuring activities	17.3			10.8		0.1
Net Economic Earnings (Non-GAAP)	$	100.1		$	65.0	$	62.6