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Income Taxes (Table)
12 Months Ended
Sep. 30, 2014
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit)
The components of income tax expense from continuing operations for 2014, 2013 and 2012 were as follows:
 
2014
 
2013
 
2012
 
(In thousands)
Current
 
 
 
 
 
Federal
$

 
$

 
$
631

State
5,527

 
8,178

 
6,888

Deferred
 
 
 
 
 
Federal
169,106

 
124,836

 
103,971

State
12,375

 
9,605

 
(13,237
)
Investment tax credits
(6
)
 
(20
)
 
(27
)
 
$
187,002

 
$
142,599

 
$
98,226

Schedule of Effective Income Tax Rate Reconciliation
Reconciliations of the provision for income taxes computed at the statutory rate to the reported provisions for income taxes from continuing operations for 2014, 2013 and 2012 are set forth below:
 
2014
 
2013
 
2012
 
(In thousands)
Tax at statutory rate of 35%
$
166,887

 
$
130,655

 
$
101,648

Common stock dividends deductible for tax reporting
(2,307
)
 
(2,153
)
 
(2,096
)
State taxes (net of federal benefit)
11,636

 
11,559

 
(4,127
)
Change in valuation allowance
6,969

 
1,085

 

Other, net
3,817

 
1,453

 
2,801

Income tax expense
$
187,002

 
$
142,599

 
$
98,226

Schedule of Deferred Tax Assets and Liabilities
The tax effect of temporary differences that gave rise to significant components of the deferred tax liabilities and deferred tax assets at September 30, 2014 and 2013 are presented below:
 
2014
 
2013
 
(In thousands)
Deferred tax assets:
 
 
 
Employee benefit plans
$
116,157

 
$
115,970

Interest rate agreements
10,565

 

Net operating loss carryforwards
236,626

 
196,296

Charitable and other credit carryforwards
21,614

 
20,939

Other
28,849

 
38,013

Total deferred tax assets
413,811

 
371,218

Valuation allowance
(6,969
)
 
(1,085
)
Net deferred tax assets
406,842

 
370,133

Deferred tax liabilities:
 
 
 
Difference in net book value and net tax value of assets
(1,655,894
)
 
(1,445,450
)
Pension funding
(17,890
)
 
(23,480
)
Gas cost adjustments
(31,252
)
 
(19,182
)
Interest rate agreements

 
(21,726
)
Other
(37,173
)
 
(39,045
)
Total deferred tax liabilities
(1,742,209
)
 
(1,548,883
)
Net deferred tax liabilities
$
(1,335,367
)
 
$
(1,178,750
)
Deferred credits for rate regulated entities
$
(109
)
 
$
(51
)
Schedule of Unrecognized Tax Benefits Roll Forward
The following table reconciles the beginning and ending balance of our unrecognized tax benefits:
 
2014
 
2013
 
(In thousands)
Unrecognized tax benefits - beginning balance
$
4,158

 
$
2,817

Increase resulting from prior period tax positions
3,846

 

Increase resulting from current period tax positions
4,625

 
1,341

Unrecognized tax benefits - ending balance
12,629

 
4,158

Accrued interest and penalties
411

 

Gross unrecognized tax benefits
13,040

 
4,158

Less: deferred federal and state income tax benefits
(4,564
)
 
(1,455
)
Total unrecognized tax benefits that, if recognized, would impact the effective income tax rate as of the end of the year
$
8,476

 
$
2,703