Derivative Instruments and Hedging Activities (Tables)

9 Months Ended

Jun. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Balance Sheet Location and Fair Value of Derivative Assets and Liabilities

The following table presents the Company’s derivative assets and liabilities, as well as the effects of offsetting, as of June 30, 2016 and 2015:

	June 30, 2016			June 30, 2015
Derivative assets:
Derivatives subject to PGC and DS mechanisms:
Commodity contracts	$	5,718		$	1,943
Derivatives not subject to PGC and DS mechanisms:
Commodity contracts	—			36
Total derivative assets - gross	5,718			1,979
Gross amounts offset in the balance sheet	(225		)	(583		)
Total derivative assets - net	$	5,493		$	1,396
Derivative liabilities:
Derivatives subject to PGC and DS mechanisms:
Commodity contracts	$	(593	)	$	(4,807	)
Derivatives not subject to PGC and DS mechanisms:
Commodity contracts	(139		)	(188		)
Total derivative liabilities - gross	(732		)	(4,995		)
Gross amounts offset in the balance sheet	225			583
Total derivative liabilities - net	$	(507	)	$	(4,412	)

Effects of Derivative Instruments on the Condensed Consolidated Statements of Income and Changes in AOCI and Noncontrolling Interest

The following table provides information on the effects of derivative instruments not subject to ratemaking mechanisms on the Condensed Consolidated Statements of Income and changes in AOCI for the three and nine months ended June 30, 2016 and 2015:

	Loss Recognized in AOCI						Loss Reclassified from AOCI into Income						Location of Loss Reclassified from AOCI into Income
Three Months Ended June 30,	2016			2015			2016			2015
Cash Flow Hedges:
Interest rate contracts	$	—		$	—		$	(610	)	$	(669	)	Interest expense
	Gain Recognized in Income						Location of Gain Recognized in Income
Three Months Ended June 30,	2016			2015
Derivatives Not Subject to PGC and DS Mechanisms:
Gasoline contracts	$	27		$	111		Operating expenses/other operating income, net
	Loss Recognized in AOCI						Loss Reclassified from AOCI into Income						Location of Loss Reclassified from AOCI into Income
Nine Months Ended June 30,	2016			2015			2016			2015
Cash Flow Hedges:
Interest rate contracts	$	(28,959	)	$	—		$	(1,885	)	$	(2,008	)	Interest expense
	Loss Recognized in Income						Location of Loss Recognized in Income
Nine Months Ended June 30,	2016			2015
Derivatives Not Subject to PGC and DS Mechanisms:
Gasoline contracts	$	(93	)	$	(415	)	Operating expenses/other operating income, net