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Segment Information (Table)
6 Months Ended
Mar. 31, 2018
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
Income statements and capital expenditures for the three and six months ended March 31, 2018 and 2017 by segment are presented in the following tables:
 
Three Months Ended March 31, 2018
 
Distribution
 
Pipeline and Storage
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
1,198,309

 
$
21,100

 
$

 
$
1,219,409

Intersegment revenues
982

 
99,855

 
(100,837
)
 

Total operating revenues
1,199,291

 
120,955

 
(100,837
)
 
1,219,409

Purchased gas cost
727,053

 
433

 
(100,526
)
 
626,960

Operation and maintenance expense
131,991

 
29,393

 
(311
)
 
161,073

Depreciation and amortization expense
65,649

 
23,732

 

 
89,381

Taxes, other than income
64,692

 
8,315

 

 
73,007

Operating income
209,906

 
59,082

 

 
268,988

Miscellaneous income (expense)
393

 
(646
)
 

 
(253
)
Interest charges
16,898

 
10,406

 

 
27,304

Income before income taxes
193,401

 
48,030

 

 
241,431

Income tax expense
48,158

 
14,281

 

 
62,439

Net income
$
145,243

 
$
33,749

 
$

 
$
178,992

Capital expenditures
$
224,235

 
$
86,505

 
$

 
$
310,740



 
Three Months Ended March 31, 2017
 
Distribution
 
Pipeline and Storage
 
Natural Gas Marketing
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
962,217

 
$
25,969

 
$

 
$

 
$
988,186

Intersegment revenues
324

 
86,003

 

 
(86,327
)
 

Total operating revenues
962,541

 
111,972

 

 
(86,327
)
 
988,186

Purchased gas cost
513,096

 
725

 

 
(86,327
)
 
427,494

Operation and maintenance expense
103,703

 
28,536

 

 

 
132,239

Depreciation and amortization expense
61,302

 
16,365

 

 

 
77,667

Taxes, other than income
57,636

 
7,978

 

 

 
65,614

Operating income
226,804

 
58,368

 

 

 
285,172

Miscellaneous income (expense)
1,029

 
(196
)
 

 

 
833

Interest charges
16,925

 
10,019

 

 

 
26,944

Income from continuing operations before income taxes
210,908

 
48,153

 

 

 
259,061

Income tax expense
79,763

 
17,286

 

 

 
97,049

Income from continuing operations
131,145

 
30,867

 

 

 
162,012

Gain on sale of discontinued operations, net of tax

 

 
2,716

 

 
2,716

Net income
$
131,145

 
$
30,867

 
$
2,716

 
$

 
$
164,728

Capital expenditures
$
208,185

 
$
53,238

 
$

 
$

 
$
261,423



 
Six Months Ended March 31, 2018
 
Distribution
 
Pipeline and Storage
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
2,058,762

 
$
49,839

 
$

 
$
2,108,601

Intersegment revenues
1,321

 
197,579

 
(198,900
)
 

Total operating revenues
2,060,083

 
247,418

 
(198,900
)
 
2,108,601

Purchased gas cost
1,190,811

 
1,345

 
(198,279
)
 
993,877

Operation and maintenance expense
235,728

 
55,533

 
(621
)
 
290,640

Depreciation and amortization expense
131,083

 
46,672

 

 
177,755

Taxes, other than income
119,799

 
15,981

 

 
135,780

Operating income
382,662

 
127,887

 

 
510,549

Miscellaneous expense
(1,007
)
 
(1,281
)
 

 
(2,288
)
Interest charges
38,266

 
20,547

 

 
58,813

Income before income taxes
343,389

 
106,059

 

 
449,448

Income tax (benefit) expense
(50,953
)
 
7,277

 

 
(43,676
)
Net income
$
394,342

 
$
98,782

 
$

 
$
493,124

Capital expenditures
$
465,484

 
$
228,494

 
$

 
$
693,978



 
Six Months Ended March 31, 2017
 
Distribution
 
Pipeline and Storage
 
Natural Gas Marketing
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
1,716,483

 
$
51,871

 
$

 
$

 
$
1,768,354

Intersegment revenues
714

 
170,053

 

 
(170,767
)
 

Total operating revenues
1,717,197

 
221,924

 

 
(170,767
)
 
1,768,354

Purchased gas cost
908,442

 
1,080

 

 
(170,723
)
 
738,799

Operation and maintenance expense
196,417

 
60,804

 

 
(44
)
 
257,177

Depreciation and amortization expense
122,459

 
32,166

 

 

 
154,625

Taxes, other than income
108,182

 
14,481

 

 

 
122,663

Operating income
381,697

 
113,393

 

 

 
495,090

Miscellaneous income (expense)
396

 
(557
)
 

 

 
(161
)
Interest charges
38,043

 
19,931

 

 

 
57,974

Income from continuing operations before income taxes
344,050

 
92,905

 

 

 
436,955

Income tax expense
127,541

 
33,364

 

 

 
160,905

Income from continuing operations
216,509

 
59,541

 

 

 
276,050

Income from discontinued operations, net of tax

 

 
10,994

 

 
10,994

Gain on sale of discontinued operations, net of tax

 

 
2,716

 

 
2,716

Net income
$
216,509

 
$
59,541

 
$
13,710

 
$

 
$
289,760

Capital expenditures
$
430,669

 
$
128,716

 
$

 
$

 
$
559,385

 

Balance sheet information at March 31, 2018 and September 30, 2017 by segment is presented in the following tables:
 
March 31, 2018
 
Distribution
 
Pipeline and Storage
 
Eliminations
 
Consolidated
 
(In thousands)
Property, plant and equipment, net
$
7,202,673

 
$
2,558,656

 
$

 
$
9,761,329

Total assets
$
10,723,398

 
$
2,779,330

 
$
(2,146,406
)
 
$
11,356,322


 
September 30, 2017
 
Distribution
 
Pipeline and Storage
 
Eliminations
 
Consolidated
 
(In thousands)
Property, plant and equipment, net
$
6,849,517

 
$
2,409,665

 
$

 
$
9,259,182

Total assets
$
10,050,164

 
$
2,621,601

 
$
(1,922,169
)
 
$
10,749,596