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Derivative Instruments and Hedging Activities (Tables)
 3 Months Ended
Dec. 31, 2015
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 December 31, 2015 and 2014:

 
 
December 31, 2015
 
December 31, 2014
Derivative assets:
 
 
 
 
Derivatives designated as hedging instruments:
 
 
 
 
Interest rate contracts
 
$
572

 
$
—

Derivatives subject to PGC and DS mechanisms:
 
 
 
 
Commodity contracts
 
234

 
177

Total derivative assets - gross
 
806

 
177

Gross amounts offset in the balance sheet
 
(572
)
 
(177
)
Total derivative assets - net
 
$
234

 
$
—

 
 
 
 
 
Derivative liabilities:
 
 
 
 
Derivatives designated as hedging instruments:
 
 
 
 
Interest rate contracts
 
$
(4,380
)
 
$
—

Derivatives subject to PGC and DS mechanisms:
 
 

 
 

Commodity contracts
 
(6,278
)
 
(9,398
)
Derivatives not subject to PGC and DS mechanisms:
 
 

 
 

Commodity contracts
 
(265
)
 
(557
)
Total derivative liabilities - gross
 
(10,923
)
 
(9,955
)
Gross amounts offset in the balance sheet
 
572

 
177

Total derivative liabilities - net
 
$
(10,351
)
 
$
(9,778
)
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 months ended December 31, 2015 and 2014:

 
 
Gain (Loss) Recognized in AOCI
 
Gain (Loss) Reclassified from AOCI into Income
 
Location of Gain
(Loss) Reclassified from AOCI into Income
Three Months Ended December 31,
 
2015
 
2014
 
2015
 
2014
 
Cash Flow Hedges:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
$
3,209

 
$
—

 
$
(666
)
 
$
(669
)
 
Interest expense
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Gain (Loss) Recognized in Income
 
Location of Gain (Loss) Recognized in Income
 
 
 
 
Three Months Ended December 31,
 
2015
 
2014
 
 
 
 
 
 
 
 
Derivatives Not Subject to PGC and DS Mechanisms:
 
 
 
 
 
 
 
 
 
 
 
 
Gasoline contracts
 
$
(65
)
 
$
(522
)
 
Operating expenses/other operating income, net