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Financial Instruments (Tables)
 12 Months Ended
Sep. 30, 2015
Financial Instruments, Owned, at Fair Value [Abstract]  
Long-Term Debt
Based on these criteria, the fair market value of long-term debt, including current portion, was as follows:
 
 
At September 30
 
2015  Carrying
Amount
 
2015 Fair
Value
 
2014 Carrying
Amount
 
2014 Fair
Value
 
(Thousands)
Long-Term Debt
$
2,084,009

 
$
2,129,558

 
$
1,637,443

 
$
1,775,715
Schedule Of Derivatives Financial Instruments Designated And Qualifying As Cash Flow Hedges On The Statements Of Financial Performance
The Effect of Derivative Financial Instruments on the Statement of Financial Performance for the
Year Ended September 30, 2015 and 2014 (Dollar Amounts in Thousands)
Derivatives in Cash
Flow Hedging
Relationships
 
Amount of
Derivative Gain or
(Loss) Recognized
in Other
Comprehensive
Income (Loss) on
the Consolidated
Statement of
Comprehensive
Income (Loss)
(Effective Portion)
for the Year Ended
September 30,
 
Location of
Derivative Gain or (Loss) Reclassified
from Accumulated
Other Comprehensive
Income (Loss) on
the Consolidated
Balance Sheet into
the Consolidated
Statement of Income
(Effective Portion)
 
Amount of
Derivative Gain or
(Loss) Reclassified
from Accumulated
Other
Comprehensive
Income (Loss) on
the Consolidated
Balance Sheet into
the Consolidated
Statement of Income
(Effective Portion)
for the Year Ended
September 30,
 
Location of
Derivative Gain or (Loss) Recognized
in the Consolidated
Statement of Income
(Ineffective Portion
and Amount
Excluded from
Effectiveness Testing)
 
Derivative Gain or (Loss) Recognized in the Consolidated Statement of Income (Ineffective Portion and Amount Excluded from Effectiveness Testing) for the Year Ended September 30,
 
 
2015
 
2014
 
 
 
2015
 
2014
 
 
 
2015
 
2014
Commodity Contracts
 
$
377,957

 
$
9,763

 
Operating Revenue
 
$
180,069

 
$
(14,880
)
 
Operating Revenue
 
$
3,563

 
$
624

Commodity Contracts
 
$
6,016

 
$
(4,429
)
 
Purchased Gas
 
$
4,884

 
$
(2,767
)
 
Not Applicable
 
$
—

 
$
—

Foreign Currency Contracts
 
$
(2,955
)
 
$
—

 
Not Applicable
 
$
—

 
$
—

 
Not Applicable
 
$
—

 
$
—

Total
 
$
381,018

 
$
5,334

 
 
 
$
184,953

 
$
(17,647
)
 
 
 
$
3,563

 
$
624
Schedule Of Derivatives And Hedged Items In Fair Value Hedging Relationships
For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative as well as the offsetting gain or loss on the hedged item attributable to the hedged risk completely offset each other in current earnings, as shown below.
 
Derivatives in Fair Value Hedging Relationships
 
Location of Gain or (Loss) on Derivative and Hedged Item Recognized in the Consolidated Statement of Income
 
Amount of Gain  or
(Loss) on Derivative
Recognized in the
Consolidated
Statement of Income
for the Year Ended
September 30, 2015
 
Amount of Gain  or
(Loss) on Hedged Item
Recognized in the
Consolidated
Statement of Income
for the Year Ended
September 30, 2015
 
 
 
 
(In thousands)
Commodity Contracts
 
Operating Revenues
 
$
(13,944
)
 
$
13,944

Commodity Contracts
 
Purchased Gas
 
(18
)
 
18

 
 
 
 
$
(13,962
)
 
$
13,962