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Segment Information (Table)
9 Months Ended
Jun. 30, 2016
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
Income statements for the three and nine months ended June 30, 2016 and 2015 by segment are presented in the following tables:
 
Three Months Ended June 30, 2016
 
Regulated
Distribution
 
Regulated
Pipeline
 
Nonregulated
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
411,982

 
$
28,518

 
$
192,416

 
$

 
$
632,916

Intersegment revenues
2,244

 
80,731

 
22,139

 
(105,114
)
 

 
414,226

 
109,249

 
214,555

 
(105,114
)
 
632,916

Purchased gas cost
138,845

 

 
191,741

 
(104,981
)
 
225,605

Gross profit
275,381

 
109,249

 
22,814

 
(133
)
 
407,311

Operating expenses
 
 
 
 
 
 
 
 
 
Operation and maintenance
100,859

 
29,083

 
7,635

 
(133
)
 
137,444

Depreciation and amortization
58,916

 
13,409

 
1,134

 

 
73,459

Taxes, other than income
52,377

 
6,220

 
647

 

 
59,244

Total operating expenses
212,152

 
48,712

 
9,416

 
(133
)
 
270,147

Operating income
63,229

 
60,537

 
13,398

 

 
137,164

Miscellaneous income (expense)
1,111

 
(359
)
 
574

 
(493
)
 
833

Interest charges
18,968

 
9,002

 
221

 
(493
)
 
27,698

Income before income taxes
45,372

 
51,176

 
13,751

 

 
110,299

Income tax expense
15,516

 
18,046

 
5,544

 

 
39,106

Net income
$
29,856

 
$
33,130

 
$
8,207

 
$

 
$
71,193

Capital expenditures
$
191,202

 
$
66,639

 
$
(66
)
 
$

 
$
257,775


 
Three Months Ended June 30, 2015
 
Regulated
Distribution
 
Regulated
Pipeline
 
Nonregulated
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
415,160

 
$
25,859

 
$
245,382

 
$

 
$
686,401

Intersegment revenues
1,634

 
71,149

 
33,387

 
(106,170
)
 

 
416,794

 
97,008

 
278,769

 
(106,170
)
 
686,401

Purchased gas cost
149,775

 

 
260,990

 
(106,037
)
 
304,728

Gross profit
267,019

 
97,008

 
17,779

 
(133
)
 
381,673

Operating expenses
 
 
 
 
 
 
 
 
 
Operation and maintenance
98,552

 
26,572

 
7,456

 
(133
)
 
132,447

Depreciation and amortization
55,491

 
11,816

 
1,137

 

 
68,444

Taxes, other than income
56,176

 
6,193

 
806

 

 
63,175

Total operating expenses
210,219

 
44,581

 
9,399

 
(133
)
 
264,066

Operating income
56,800

 
52,427

 
8,380

 

 
117,607

Miscellaneous income (expense)
1,045

 
(211
)
 
345

 
(545
)
 
634

Interest charges
19,961

 
8,299

 
240

 
(545
)
 
27,955

Income before income taxes
37,884

 
43,917

 
8,485

 

 
90,286

Income tax expense
15,420

 
15,349

 
3,236

 

 
34,005

Net income
$
22,464

 
$
28,568

 
$
5,249

 
$

 
$
56,281

Capital expenditures
$
170,134

 
$
55,914

 
$
(209
)
 
$

 
$
225,839



 
 
 
 
 
 
 
 
 
 
 
Nine Months Ended June 30, 2016
 
Regulated
Distribution
 
Regulated
Pipeline
 
Nonregulated
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
1,896,636

 
$
75,344

 
$
699,450

 
$

 
$
2,671,430

Intersegment revenues
5,877

 
224,285

 
75,024

 
(305,186
)
 

 
1,902,513

 
299,629

 
774,474

 
(305,186
)
 
2,671,430

Purchased gas cost
884,529

 

 
722,803

 
(304,787
)
 
1,302,545

Gross profit
1,017,984

 
299,629

 
51,671

 
(399
)
 
1,368,885

Operating expenses
 
 
 
 
 
 
 
 
 
Operation and maintenance
291,388

 
83,302

 
21,667

 
(399
)
 
395,958

Depreciation and amortization
173,913

 
39,358

 
3,399

 

 
216,670

Taxes, other than income
152,324

 
18,529

 
2,019

 

 
172,872

Total operating expenses
617,625

 
141,189

 
27,085

 
(399
)
 
785,500

Operating income
400,359

 
158,440

 
24,586

 

 
583,385

Miscellaneous income (expense)
209

 
(1,164
)
 
1,245

 
(1,351
)
 
(1,061
)
Interest charges
58,390

 
27,294

 
1,408

 
(1,351
)
 
85,741

Income before income taxes
342,178

 
129,982

 
24,423

 

 
496,583

Income tax expense
124,755

 
46,081

 
9,883

 

 
180,719

Net income
$
217,423

 
$
83,901

 
$
14,540

 
$

 
$
315,864

Capital expenditures
$
533,826

 
$
262,058

 
$
124

 
$

 
$
796,008


 
 
 
 
 
 
 
 
 
 
 
Nine Months Ended June 30, 2015
 
Regulated
Distribution
 
Regulated
Pipeline
 
Nonregulated
 
Eliminations
 
Consolidated
 
(In thousands)
Operating revenues from external parties
$
2,389,037

 
$
70,887

 
$
1,025,310

 
$

 
$
3,485,234

Intersegment revenues
5,142

 
201,418

 
154,069

 
(360,629
)
 

 
2,394,179

 
272,305

 
1,179,379

 
(360,629
)
 
3,485,234

Purchased gas cost
1,397,113

 

 
1,122,655

 
(360,230
)
 
2,159,538

Gross profit
997,066

 
272,305

 
56,724

 
(399
)
 
1,325,696

Operating expenses
 
 
 
 
 
 
 
 
 
Operation and maintenance
288,962

 
74,029

 
21,897

 
(399
)
 
384,489

Depreciation and amortization
165,730

 
34,945

 
3,384

 

 
204,059

Taxes, other than income
162,759

 
16,296

 
2,551

 

 
181,606

Total operating expenses
617,451

 
125,270

 
27,832

 
(399
)
 
770,154

Operating income
379,615

 
147,035

 
28,892

 

 
555,542

Miscellaneous income (expense)
(1,221
)
 
(842
)
 
897

 
(1,468
)
 
(2,634
)
Interest charges
60,914

 
25,014

 
706

 
(1,468
)
 
85,166

Income before income taxes
317,480

 
121,179

 
29,083

 

 
467,742

Income tax expense
121,776

 
42,894

 
11,512

 

 
176,182

Net income
$
195,704

 
$
78,285

 
$
17,571

 
$

 
$
291,560

Capital expenditures
$
482,371

 
$
185,028

 
$
84

 
$

 
$
667,483

 
Balance sheet information at June 30, 2016 and September 30, 2015 by segment is presented in the following tables:

 
June 30, 2016
 
Regulated
Distribution
 
Regulated
Pipeline
 
Nonregulated
 
Eliminations
 
Consolidated
 
(In thousands)
ASSETS
 
 
 
 
 
 
 
 
 
Property, plant and equipment, net
$
6,067,548

 
$
1,935,087

 
$
50,912

 
$

 
$
8,053,547

Investment in subsidiaries
1,007,787

 

 

 
(1,007,787
)
 

Current assets
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
61,441

 

 
4,765

 

 
66,206

Assets from risk management activities
3,651

 

 
4,047

 

 
7,698

Other current assets
370,444

 
22,269

 
391,265

 
(208,969
)
 
575,009

Intercompany receivables
981,651

 

 

 
(981,651
)
 

Total current assets
1,417,187

 
22,269

 
400,077

 
(1,190,620
)
 
648,913

Goodwill
575,449

 
132,542

 
34,711

 

 
742,702

Noncurrent assets from risk management activities
750

 

 
908

 

 
1,658

Deferred charges and other assets
258,370

 
21,976

 
202

 

 
280,548

 
$
9,327,091

 
$
2,111,874

 
$
486,810

 
$
(2,198,407
)
 
$
9,727,368

CAPITALIZATION AND LIABILITIES
 
 
 
 
 
 
 
 
 
Shareholders’ equity
$
3,466,724

 
$
661,175

 
$
346,612

 
$
(1,007,787
)
 
$
3,466,724

Long-term debt
2,205,645

 

 

 

 
2,205,645

Total capitalization
5,672,369

 
661,175

 
346,612

 
(1,007,787
)
 
5,672,369

Current liabilities
 
 
 
 
 
 
 
 
 
Current maturities of long-term debt
250,000

 

 

 

 
250,000

Short-term debt
870,466

 

 

 
(200,000
)
 
670,466

Liabilities from risk management activities
56,883

 

 

 

 
56,883

Other current liabilities
453,831

 
16,590

 
90,999

 
(8,969
)
 
552,451

Intercompany payables

 
953,683

 
27,968

 
(981,651
)
 

Total current liabilities
1,631,180

 
970,273

 
118,967

 
(1,190,620
)
 
1,529,800

Deferred income taxes
1,093,755

 
480,336

 
11,409

 

 
1,585,500

Noncurrent liabilities from risk management activities
176,491

 

 

 

 
176,491

Regulatory cost of removal obligation
427,332

 

 

 

 
427,332

Pension and postretirement liabilities
283,579

 

 

 

 
283,579

Deferred credits and other liabilities
42,385

 
90

 
9,822

 

 
52,297

 
$
9,327,091

 
$
2,111,874

 
$
486,810

 
$
(2,198,407
)
 
$
9,727,368




 
September 30, 2015
 
Regulated
Distribution
 
Regulated
Pipeline
 
Nonregulated
 
Eliminations
 
Consolidated
 
(In thousands)
ASSETS
 
 
 
 
 
 
 
 
 
Property, plant and equipment, net
$
5,670,306

 
$
1,706,449

 
$
53,825

 
$

 
$
7,430,580

Investment in subsidiaries
1,038,670

 

 
(2,096
)
 
(1,036,574
)
 

Current assets
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
23,863

 

 
4,790

 

 
28,653

Assets from risk management activities
378

 

 
8,854

 

 
9,232

Other current assets
421,591

 
24,628

 
480,503

 
(338,301
)
 
588,421

Intercompany receivables
887,713

 

 

 
(887,713
)
 

Total current assets
1,333,545

 
24,628

 
494,147

 
(1,226,014
)
 
626,306

Goodwill
575,449

 
132,542

 
34,711

 

 
742,702

Noncurrent assets from risk management activities
368

 

 

 

 
368

Deferred charges and other assets
270,372

 
17,288

 
5,329

 

 
292,989

 
$
8,888,710

 
$
1,880,907

 
$
585,916

 
$
(2,262,588
)
 
$
9,092,945

CAPITALIZATION AND LIABILITIES
 
 
 
 
 
 
 
 
 
Shareholders’ equity
$
3,194,797

 
$
577,275

 
$
461,395

 
$
(1,038,670
)
 
$
3,194,797

Long-term debt
2,455,388

 

 

 

 
2,455,388

Total capitalization
5,650,185

 
577,275

 
461,395

 
(1,038,670
)
 
5,650,185

Current liabilities
 
 
 
 
 
 
 
 
 
Short-term debt
782,927

 

 

 
(325,000
)
 
457,927

Liabilities from risk management activities
9,568

 

 

 

 
9,568

Other current liabilities
569,273

 
29,780

 
99,480

 
(11,205
)
 
687,328

Intercompany payables

 
867,409

 
20,304

 
(887,713
)
 

Total current liabilities
1,361,768

 
897,189

 
119,784

 
(1,223,918
)
 
1,154,823

Deferred income taxes
1,008,091

 
406,254

 
(3,030
)
 

 
1,411,315

Noncurrent liabilities from risk management activities
110,539

 

 

 

 
110,539

Regulatory cost of removal obligation
427,553

 

 

 

 
427,553

Pension and postretirement liabilities
287,373

 

 

 

 
287,373

Deferred credits and other liabilities
43,201

 
189

 
7,767

 

 
51,157

 
$
8,888,710

 
$
1,880,907

 
$
585,916

 
$
(2,262,588
)
 
$
9,092,945