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Accumulated Other Comprehensive Income
 9 Months Ended
Jun. 30, 2014
Equity [Abstract]  
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income
We record deferred gains (losses) in accumulated other comprehensive income (AOCI) related to available-for-sale securities, interest rate agreement cash flow hedges and commodity contract cash flow hedges. Deferred gains (losses) for our available-for-sale securities and commodity contract cash flow hedges are recognized in earnings upon settlement, while deferred gains (losses) related to our interest rate agreement cash flow hedges are recognized in earnings as they are amortized. 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 (loss) before reclassifications
3,212

 
(38,559
)
 
11,805

 
(23,542
)
Amounts reclassified from accumulated other comprehensive income
(693
)
 
2,014

 
(5,357
)
 
(4,036
)
Net current-period other comprehensive income (loss)
2,519

 
(36,545
)
 
6,448

 
(27,578
)
June 30, 2014
$
7,967

 
$
1,361

 
$
1,972

 
$
11,300


 
 
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 (loss) before reclassifications
449

 
65,308

 
(1,015
)
 
64,742

Amounts reclassified from accumulated other comprehensive income
(1,370
)
 
1,544

 
5,980

 
6,154

Net current-period other comprehensive income (loss)
(921
)
 
66,852

 
4,965

 
70,896

June 30, 2013
$
4,740

 
$
22,579

 
$
(4,030
)
 
$
23,289




The following tables detail reclassifications out of AOCI for the three and nine months ended June 30, 2014 and 2013. Amounts in parentheses below indicate decreases to net income in the statement of income.
 
Three Months Ended June 30, 2014
Accumulated Other Comprehensive Income Components
Amount Reclassified from
Accumulated Other
Comprehensive Income      
 
Affected Line Item in the
Statement of Income
 
(In thousands)
 
 
Available-for-sale securities
$
733

 
Operation and maintenance expense
 
733

 
Total before tax
 
(267
)
 
Tax expense
 
$
466

 
Net of tax
Cash flow hedges
 
 
 
Interest rate agreements
$
(1,057
)
 
Interest charges
Commodity contracts
4,209

 
Purchased gas cost
 
3,152

 
Total before tax
 
(1,256
)
 
Tax expense
 
$
1,896

 
Net of tax
Total reclassifications
$
2,362

 
Net of tax
 
Three Months Ended June 30, 2013
Accumulated Other Comprehensive Income Components
Amount Reclassified from
Accumulated Other
Comprehensive Income      
 
Affected Line Item in the
Statement of Income
 
(In thousands)
 
 
Available-for-sale securities
$
(531
)
 
Operation and maintenance expense
 
(531
)
 
Total before tax
 
193

 
Tax benefit
 
$
(338
)
 
Net of tax
Cash flow hedges
 
 
 
Interest rate agreements
$
(1,057
)
 
Interest charges
Commodity contracts
558

 
Purchased gas cost
 
(499
)
 
Total before tax
 
168

 
Tax benefit
 
$
(331
)
 
Net of tax
Total reclassifications
$
(669
)
 
Net of tax
 
 
 
 
 
 
 
 
 
Nine Months Ended June 30, 2014
Accumulated Other Comprehensive Income Components                          
Amount Reclassified from
Accumulated Other
Comprehensive Income      
 
Affected Line Item in  the
Statement of Income
 
(In thousands)
 
 
Available-for-sale securities
$
1,091

 
Operation and maintenance expense
 
1,091

 
Total before tax
 
(398
)
 
Tax expense
 
$
693

 
Net of tax
Cash flow hedges
 
 
 
Interest rate agreements
$
(3,172
)
 
Interest charges
Commodity contracts
8,783

 
Purchased gas cost
 
5,611

 
Total before tax
 
(2,268
)
 
Tax expense
 
$
3,343

 
Net of tax
Total reclassifications
$
4,036

 
Net of tax

 
 
 
 
 
 
 
 
 
Nine Months Ended June 30, 2013
Accumulated Other Comprehensive Income Components                          
Amount Reclassified from
Accumulated Other
Comprehensive Income      
 
Affected Line Item in  the
Statement of Income
 
(In thousands)
 
 
Available-for-sale securities
$
2,158

 
Operation and maintenance expense
 
2,158

 
Total before tax
 
(788
)
 
Tax expense
 
$
1,370

 
Net of tax
Cash flow hedges
 
 
 
Interest rate agreements
$
(2,432
)
 
Interest charges
Commodity contracts
(9,803
)
 
Purchased gas cost
 
(12,235
)
 
Total before tax
 
4,711

 
Tax benefit
 
$
(7,524
)
 
Net of tax
Total reclassifications
$
(6,154
)
 
Net of tax