SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Schedule of Demand Charges

The following table summarizes the demand charges, which are net of capacity releases, and are included as a component of gas purchases on the Consolidated Statements of Operations for the fiscal years ended September 30:

(Millions)	2018		2017		2016
Energy Services	$	153.0	$	126.4	$	141.0
Natural Gas Distribution	92.5		80.2		77.8
Total	$	245.5	$	206.6	$	218.8

Schedule of Property, Plant and Equipment

Property, plant and equipment was comprised of the following as of September 30:

(Thousands)
Property Classifications	Estimated Useful Lives	2018			2017
Distribution facilities	38 to 74 years	$	2,151,249		$	1,952,697
Transmission facilities	35 to 56 years	295,692			294,586
Storage facilities	34 to 47 years	79,470			78,245
Solar property	20 to 25 years	720,562			587,345
Wind property(1)	17 to 25 years	—			244,764
Midstream property(2)	30 years	6,747			—
All other property	5 to 35 years	50,771			53,433
Total property, plant and equipment		3,304,491			3,211,070
Accumulated depreciation and amortization		(653,442		)	(601,329		)
Property, plant and equipment, net		$	2,651,049		$	2,609,741

(1) Reclassified to assets held for sale. See Note 2. Summary of Significant Accounting Policies, for more information.

(2) Includes activity related to the acquisition of IEC by Adelphia. For fiscal 2017, Midstream property was originally included in All other property.

Schedule of Capitalized Amounts Associated with Debt and Equity Component of AFUDC

Capitalized and deferred interest include the following for the fiscal years ended September 30:

($ in thousands)	2018			2017			2016
AFUDC:
Debt	$	1,979		$	1,311		$	5,009
Equity	5,531			3,867			4,375
Total	$	7,510		$	5,178		$	9,384
Weighted average interest rate	5.94		%	6.90		%	5.06		%

Summary of Customer Accounts Receivable by Company

The following table summarizes customer accounts receivable by company as of September 30:

(Thousands)	2018				2017
Energy Services	$	157,936	77	%	$	150,322	77	%
Natural Gas Distribution (1)	39,151		19		37,432		19
Clean Energy Ventures	3,330		2		2,655		1
Home Services and Other Operations	5,073		2		6,058		3
Total	$	205,490	100	%	$	196,467	100	%

(1) Does not include unbilled revenues of $7.2 million as of September 30, 2018 and 2017.

Summary of Gas in Storage

The following table summarizes gas in storage, at average cost by company, as of September 30:

	2018				2017
($ in thousands)	Gas in Storage			Bcf	Gas in Storage			Bcf
Energy Services		$	90,166	34.1		$	122,884	53.9
Natural Gas Distribution		94,467		24.9		79,179		21.8
Total		$	184,633	59.0		$	202,063	75.7

Schedule of Disposal Groups, Including Discontinued Operations

The major classes of assets and liabilities included within the disposal group as held for sale are as follows:

(Thousands)	September 30, 2017		Assets reclassified as held for sale			Assets Sold			September 30, 2018
Assets held for sale:
Property, plant and equipment - wind equipment, at cost	$	—	$	245,044		$	(20,688	)	$	224,356
Property, plant and equipment - accumulated depreciation, wind equipment	—		(21,561		)	3,060			(18,501		)
Prepaid and accrued taxes	—		866			(77		)	789
Other noncurrent assets	—		261			—			261
	$	—	$	224,610		$	(17,705	)	$	206,905
Liabilities held for sale:
Accounts payable and other (1)	$	—	$	—		$	186		$	186
Asset retirement obligation	—		4,262			(266		)	3,996
	$	—	$	4,262		$	(80	)	$	4,182

(1) Transaction fee owed to broker for the sale of Two Dot wind farm.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The estimated future amortization expense for the next five years as of September 30, is as follows:

(Thousands)
2019	$	8,424
2020	$	4,925
2021	$	4,604
2022	$	2,561
2023	$	2,271
Thereafter	$	77

Changes in Components of Accumulated Other Comprehensive Income, Net

The following table presents the changes in the components of accumulated other comprehensive income, net of related tax effects, as of September 30:

(Thousands)	Unrealized gain (loss) on available for sale securities			Adjustment to postemployment benefit obligation				Total
Balance as of September 30, 2016	$	4,198		$	(19,353	)		$	(15,155	)
Other comprehensive income, net of tax
Other comprehensive income, before reclassifications, net of tax of $(6,593), $(2,619), $(9,212)	10,019			3,783				13,802
Amounts reclassified from accumulated other comprehensive (loss) income, net of tax of $2,192, $(868), $1,324	(3,173		)	1,270			(1)	(1,903		)
Net current-period other comprehensive income, net of tax of $(4,401), $(3,487), $(7,888)	6,846			5,053				11,899
Balance at September 30, 2017	$	11,044		$	(14,300	)		$	(3,256	)
Other comprehensive income, net of tax
Other comprehensive (loss) income, before reclassifications, net of tax of $6,973, $(125), $6,848	(19,245		)	464				(18,781		)
Amounts reclassified from accumulated other comprehensive income, net of tax of $(858), $(448), $(1,306)	11,647			1,056			(1)	12,703
Net current-period other comprehensive (loss) income, net of tax of $6,115, $(573), $5,542	(7,598		)	1,520				(6,078		)
Reclassifications of certain income tax effects to retained earnings (2)	—			(3,276		)		(3,276		)
Balance at September 30, 2018	$	3,446		$	(16,056	)		$	(12,610	)

(1) Included in the computation of net periodic pension cost, a component of O&M expense on the Consolidated Statements of Operations. For more details, see Note 10. Employee Benefit Plans.

(2) Due to the adoption of ASU No. 2018-02, an amendment to ASC 740, Income Taxes. See Note 2. Summary of Significant Accounting Policies- Recently Adopted Updates to the Accounting Standards Codification section for more details.