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Accumulated Other Comprehensive Income (Table)
 3 Months Ended
Dec. 31, 2013
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following tables provide the components of our accumulated other comprehensive income (loss) balances, net of the related tax effects allocated to each component of other comprehensive income.
 
Available-
for-Sale
Securities
 
Interest
Rate
Agreement
Cash Flow
Hedges
 
Commodity
Contracts
Cash Flow
Hedges
 
Total
 
(In thousands)
September 30, 2013
$
5,448

 
$
37,906

 
$
(4,476
)
 
$
38,878

Other comprehensive income before reclassifications
2,394

 
13,270

 
6,226

 
21,890

Amounts reclassified from accumulated other comprehensive income
—

 
672

 
1,592

 
2,264

Net current-period other comprehensive income
2,394

 
13,942

 
7,818

 
24,154

December 31, 2013
$
7,842

 
$
51,848

 
$
3,342

 
$
63,032


 
 
Available-
for-Sale
Securities
 
Interest
Rate
Agreement
Cash Flow
Hedges
 
Commodity
Contracts
Cash Flow
Hedges
 
Total
 
(In thousands)
September 30, 2012
$
5,661

 
$
(44,273
)
 
$
(8,995
)
 
$
(47,607
)
Other comprehensive income before reclassifications
(373
)
 
11,945

 
(3,513
)
 
8,059

Amounts reclassified from accumulated other comprehensive income
—

 
319

 
3,148

 
3,467

Net current-period other comprehensive income
(373
)
 
12,264

 
(365
)
 
11,526

December 31, 2012
$
5,288

 
$
(32,009
)
 
$
(9,360
)
 
$
(36,081
)
Reclassification out of Accumulated Other Comprehensive Income
The following tables detail reclassifications out of AOCI for the three months ended December 31, 2013 and 2012. Amounts in parentheses below indicate decreases to net income in the statement of income.
 
Three Months Ended December 31, 2013
Accumulated Other Comprehensive Income Components
Amount Reclassified from
Accumulated Other
Comprehensive Income      
 
Affected Line Item in the
Statement of Income
 
(In thousands)
 
 
Cash flow hedges
 
 
 
Interest rate agreements
$
(1,058
)
 
Interest charges
Commodity contracts
(2,609
)
 
Purchased gas cost
 
(3,667
)
 
Total before tax
 
1,403

 
Tax benefit
Total reclassifications
$
(2,264
)
 
Net of tax
 
Three Months Ended December 31, 2012
Accumulated Other Comprehensive Income Components
Amount Reclassified from
Accumulated Other
Comprehensive Income      
 
Affected Line Item in the
Statement of Income
 
(In thousands)
 
 
Cash flow hedges
 
 
 
Interest rate agreements
$
(502
)
 
Interest charges
Commodity contracts
(5,160
)
 
Purchased gas cost
 
(5,662
)
 
Total before tax
 
2,195

 
Tax benefit
Total reclassifications
$
(3,467
)
 
Net of tax