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Segment Information (Table)
 3 Months Ended
Dec. 31, 2018
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
Income statements and capital expenditures for the three months ended December 31, 2018 and 2017 by segment are presented in the following tables:
 
Three Months Ended December 31, 2018
 
Distribution
 
Pipeline and Storage
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
838,181

 
$
39,601

 
$
—

 
$
877,782

Intersegment revenues
654

 
94,869

 
(95,523
)
 
—

Total operating revenues
838,835

 
134,470

 
(95,523
)
 
877,782

Purchased gas cost
437,732

 
(358
)
 
(95,209
)
 
342,165

Operation and maintenance expense
105,767

 
33,147

 
(314
)
 
138,600

Depreciation and amortization expense
69,709

 
26,356

 
—

 
96,065

Taxes, other than income
56,190

 
8,298

 
—

 
64,488

Operating income
169,437

 
67,027

 
—

 
236,464

Other non-operating expense
(6,477
)
 
(1,246
)
 
—

 
(7,723
)
Interest charges
18,210

 
9,639

 
—

 
27,849

Income before income taxes
144,750

 
56,142

 
—

 
200,892

Income tax expense
30,365

 
12,881

 
—

 
43,246

Net income
$
114,385

 
$
43,261

 
$
—

 
$
157,646

Capital expenditures
$
302,545

 
$
113,859

 
$
—

 
$
416,404



 
Three Months Ended December 31, 2017
 
Distribution
 
Pipeline and Storage
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
860,453

 
$
28,739

 
$
—

 
$
889,192

Intersegment revenues
339

 
97,724

 
(98,063
)
 
—

Total operating revenues
860,792

 
126,463

 
(98,063
)
 
889,192

Purchased gas cost
463,758

 
912

 
(97,753
)
 
366,917

Operation and maintenance expense
103,215

 
26,140

 
(310
)
 
129,045

Depreciation and amortization expense
65,434

 
22,940

 
—

 
88,374

Taxes, other than income
55,107

 
7,666

 
—

 
62,773

Operating income
173,278

 
68,805

 
—

 
242,083

Other non-operating expense
(1,922
)
 
(635
)
 
—

 
(2,557
)
Interest charges
21,368

 
10,141

 
—

 
31,509

Income before income taxes
149,988

 
58,029

 
—

 
208,017

Income tax benefit
(99,111
)
 
(7,004
)
 
—

 
(106,115
)
Net income
$
249,099

 
$
65,033

 
$
—

 
$
314,132

Capital expenditures
$
241,249

 
$
141,989

 
$
—

 
$
383,238


 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
Balance sheet information at December 31, 2018 and September 30, 2018 by segment is presented in the following tables:
 
December 31, 2018
 
Distribution
 
Pipeline and Storage
 
Eliminations
 
Consolidated
 
(In thousands)
Property, plant and equipment, net
$
7,889,901

 
$
2,808,328

 
$
—

 
$
10,698,229

Total assets
$
11,836,888

 
$
3,040,831

 
$
(2,261,930
)
 
$
12,615,789


 
September 30, 2018
 
Distribution
 
Pipeline and Storage
 
Eliminations
 
Consolidated
 
(In thousands)
Property, plant and equipment, net
$
7,644,693

 
$
2,726,454

 
$
—

 
$
10,371,147

Total assets
$
11,109,128

 
$
2,963,480

 
$
(2,198,171
)
 
$
11,874,437