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Segment Information (Tables)
 9 Months Ended
Sep. 30, 2014
Segment Reporting Information [Line Items]  
Analysis and reconciliation of reportable segment information
An analysis and reconciliation of the Registrants’ reportable segment information to the respective information in the consolidated financial statements for the three months ended September 30, 2014 and 2013 is as follows:
Three Months Ended September 30, 2014 and 2013
 
 
Generation(a)
 
ComEd
 
PECO
 
BGE
 
Other(b)
 
Intersegment Eliminations
 
Exelon
Total revenues(c):
 
 
 
 
 
 
 
 
 
 
 
 
 
2014
$
4,412

 
$
1,222

 
$
693

 
$
697

 
$
305

 
$
(417
)
 
$
6,912

2013
4,255

 
1,156

 
728

 
737

 
294

 
(668
)
 
6,502

Intersegment revenues(d):
 
 
 
 
 
 
 
 
 
 
 
 
 
2014
$
112

 
$
1

 
$
—

 
$
3

 
$
302

 
$
(418
)
 
$
—

2013
373

 
1

 
1

 
2

 
294

 
(669
)
 
2

Net income (loss):
 
 
 
 
 
 
 
 
 
 
 
 
 
2014
$
849

 
$
126

 
$
81

 
$
49

 
$
(31
)
 
$
—

 
$
1,074

2013
485

 
126

 
92

 
53

 
(20
)
 
—

 
736

Total assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
September 30, 2014
$
45,019

 
$
24,845

 
$
10,051

 
$
7,915

 
$
8,713

 
$
(11,279
)
 
$
85,264

December 31, 2013
41,232

 
24,118

 
9,617

 
7,861

 
8,317

 
(11,221
)
 
79,924

__________
(a)
Generation includes the six power marketing reportable segments shown below: Mid-Atlantic, Midwest, New England, New York, ERCOT and Other Regions. Intersegment revenues for Generation for the three months ended September 30, 2014 include revenue from sales to PECO of $28 million and sales to BGE of $83 million in the Mid-Atlantic region, and sales to ComEd of $1 million in the Midwest region. For the three months ended September 30, 2013, intersegment revenues for Generation include revenue from sales to PECO of $82 million and sales to BGE of $144 million in the Mid-Atlantic region, and sales to ComEd of $143 million in the Midwest region.
(b)
Other primarily includes Exelon’s corporate operations, shared service entities and other financing and investment activities.
(c)
For the three months ended September 30, 2014 and 2013, utility taxes of $22 million and $21 million, respectively, are included in revenues and expenses for Generation. For the three months ended September 30, 2014 and 2013, utility taxes of $61 million and $65 million, respectively, are included in revenues and expenses for ComEd. For the three months ended September 30, 2014 and 2013, utility taxes of $34 million and $33 million, respectively, are included in revenues and expenses for PECO. For the three months ended September 30, 2014 and 2013, utility taxes of $21 million and $20 million, respectively, are included in revenues and expenses for BGE.
(d)
Intersegment revenues exclude sales to unconsolidated affiliates. The intersegment profit associated with Generation’s sale of certain products and services by and between Exelon’s segments is not eliminated in consolidation due to the recognition of intersegment profit in accordance with regulatory accounting guidance. For Exelon, these amounts are included in Operating revenues in the Consolidated Statements of Operations and Comprehensive Income.
Analysis and reconciliation of reportable segment revenues for Generation
 
2014
 
2013
 
Revenues
from external
customers(a)
 
Intersegment
revenues
 
Total
Revenues
 
Revenues
from external
customers(a)
 
Intersegment
revenues
 
Total
Revenues
Mid-Atlantic(b)
$
3,998

 
$
(14
)
 
$
3,984

 
$
3,932

 
$
11

 
$
3,943

Midwest
3,302

 
11

 
3,313

 
3,274

 
(3
)
 
3,271

New England
1,028

 
5

 
1,033

 
942

 
(9
)
 
933

New York(b)
614

 
(1
)
 
613

 
547

 
(20
)
 
527

ERCOT
743

 
(2
)
 
741

 
1,042

 
(8
)
 
1,034

Other Regions(c)
1,027

 
(4
)
 
1,023

 
708

 
29

 
737

Total Revenues for Reportable Segements
10,712


(5
)

10,707


10,445


—


10,445

Other(d)
1,879

 
5

 
1,884

 
1,413

 
—

 
1,413

Total Generation Consolidated Operating Revenues
$
12,591


$
—


$
12,591


$
11,858


$
—


$
11,858

 __________
(a)
Includes all wholesale and retail electric sales to third parties and affiliated sales to ComEd, PECO and BGE.
(b)
Amounts include activity recorded at CENG from April 1, 2014, the date of integration, through September 30, 2014.
(c)
Other regions include the South, West and Canada, which are not considered individually significant.
(d)
Other represents activities not allocated to a region. See text above for a description of included activities. Also includes amortization of intangible assets related to commodity contracts recorded at fair value at the date of merger with Constellation and the consolidation of CENG in purchase accounting of $203 million decrease to revenues and $603 million decrease to revenues, for the nine months ended September 30, 2014 and 2013, respectively, and elimination of intersegment revenues.

 
Generation(a)(b)
 
ComEd
 
PECO
 
BGE
 
Other(c)
 
Intersegment
Eliminations
 
Exelon
Total revenues(d):
 
 
 
 
 
 
 
 
 
 
 
 
 
2014
$
12,591

 
$
3,484

 
$
2,343

 
$
2,404

 
$
924

 
$
(1,573
)
 
$
20,173

2013
11,858

 
3,395

 
2,295

 
2,271

 
909

 
(2,003
)
 
18,725

Intersegment revenues(e):
 
 
 
 
 
 
 
 
 
 
 
 
 
2014
$
630

 
$
2

 
$
1

 
$
21

 
$
920

 
$
(1,574
)
 
$
—

2013
1,083

 
2

 
1

 
10

 
909

 
(2,003
)
 
2

Net income (loss):
 
 
 
 
 
 
 
 
 
 
 
 
 
2014
$
1,037

 
$
335

 
$
255

 
$
156

 
$
(58
)
 
$
—

 
$
1,725

2013
795

 
140

 
292

 
160

 
(152
)
 
—

 
1,235

 __________
(a)
Generation includes the six power marketing reportable segments shown below: Mid-Atlantic, Midwest, New England, New York, ERCOT and Other Regions. Intersegment revenues for Generation for the nine months ended September 30, 2014 include revenue from sales to PECO of $165 million and sales to BGE of $290 million in the Mid-Atlantic region, and sales to ComEd of $175 million in the Midwest. For the nine months ended September 30, 2013, intersegment revenues for Generation include revenue from sales to PECO of $321 million and sales to BGE of $356 million in the Mid-Atlantic region, and sales to ComEd of $409 million in the Midwest region, net of $7 million related to the unrealized mark-to-market losses related to the ComEd swap, which eliminate upon consolidation.
(b)
Amounts include activity recorded at CENG from April 1, 2014, the date of integration, through September 30, 2014.
(c)
Other primarily includes Exelon’s corporate operations, shared service entities and other financing and investment activities.
(d)
For the nine months ended September 30, 2014 and 2013, utility taxes of $67 million and $60 million, respectively, are included in revenues and expenses for Generation. For the nine months ended September 30, 2014 and 2013, utility taxes of $180 million and $182 million, respectively, are included in revenues and expenses for ComEd. For the nine months ended September 30, 2014 and 2013, utility taxes of $99 million and $97 million, respectively, are included in revenues and expenses for PECO. For the nine months ended September 30, 2014 and 2013, utility taxes of $64 million and $62 million, respectively, are included in revenues and expenses for BGE.
(e)
Intersegment revenues exclude sales to unconsolidated affiliates. The intersegment profit associated with the Generation’s sale of certain products and services by and between Exelon’s segments is not eliminated in consolidation due to the recognition of intersegment profit in accordance with regulatory accounting guidance. For Exelon, these amounts are included in Operating revenues in the Consolidated Statements of Operations and Comprehensive Income.
Exelon Generation Co L L C [Member]
  
Segment Reporting Information [Line Items]  
Analysis and reconciliation of reportable segment revenues for Generation
 
2014
 
2013
 
Revenues
from external
customers(a)

Intersegment
revenues

Total
Revenues

Revenues
from external
customers(a)

Intersegment
revenues

Total
Revenues
Mid-Atlantic
$
1,285

 
$
4

 
$
1,289

 
$
1,381

 
$
10

 
$
1,391

Midwest
1,062

 
(1
)
 
1,061

 
1,018

 
(5
)
 
1,013

New England
272

 
—

 
272

 
341

 
(1
)
 
340

New York
230

 
2

 
232

 
198

 
(14
)
 
184

ERCOT
303

 
(1
)
 
302

 
430

 
(3
)
 
427

Other Regions(b)
381

 
(6
)
 
375

 
278

 
(7
)
 
271

Total Revenues for Reportable Segments
3,533

 
(2
)
 
3,531

 
3,646

 
(20
)
 
3,626

Other(c)
879

 
2

 
881

 
609

 
20

 
629

Total Generation Consolidated Operating Revenues
$
4,412

 
$
—

 
$
4,412

 
$
4,255

 
$
—

 
$
4,255

 __________
(a)
Includes all electric sales to third parties and affiliated sales to ComEd, PECO and BGE.
(b)
Other regions include the South, West and Canada, which are not considered individually significant.
(c)
Other represents activities not allocated to a region. See text above for a description of included activities. Also includes amortization of intangible assets related to commodity contracts recorded at fair value at the date of merger with Constellation and the consolidation of CENG in purchase accounting of $22 million decrease to revenues and $125 million decrease to revenues for the three months ended September 30, 2014 and 2013, respectively, and the elimination of intersegment revenues.
Generation total revenues net of purchased power and fuel expense (three months ended September 30,):
 
 
2014
 
2013
 
RNF
from external
customers(a)
 
Intersegment RNF
 
Total RNF
 
RNF
from external
customers(a)
 
Intersegment RNF
 
Total RNF
Mid-Atlantic
$
921

 
$
14

 
$
935

 
$
857

 
$
7

 
$
864

Midwest
722

 
(6
)
 
716

 
606

 
(5
)
 
601

New England
120

 
(30
)
 
90

 
52

 
10

 
62

New York
176

 
10

 
186

 
29

 
(38
)
 
(9
)
ERCOT
186

 
(77
)
 
109

 
222

 
(78
)
 
144

Other Regions(b)
157

 
(89
)
 
68

 
116

 
(75
)
 
41

Total Revenues net of purchased power and fuel for Reportable Segments
2,282


(178
)

2,104


1,882


(179
)

1,703

Other(c)
250

 
178

 
428

 
194

 
179

 
373

Total Generation Revenues net of purchased power and fuel expense
$
2,532


$
—


$
2,532


$
2,076


$
—


$
2,076


__________
(a)
Includes purchases and sales from third parties and affiliated sales to ComEd, PECO and BGE.
(b)
Other regions include the South, West and Canada, which are not considered individually significant.
(c)
Other represents activities not allocated to a region. See text above for a description of included activities. Also includes amortization of intangible assets related to commodity contracts recorded at fair value at the date of merger with Constellation and the consolidation of CENG in purchase accounting of $15 million increase to RNF and $44 million decrease to RNF for the three months ended September 30, 2014 and 2013, respectively, and the elimination of intersegment revenues.
 
2014
 
2013
 
RNF
from external
customers(a)
 
Intersegment
RNF
 
Total
RNF
 
RNF
from external
customers(a)
 
Intersegment
RNF
 
Total
RNF
Mid-Atlantic(b)
$
2,610

 
$
(60
)
 
$
2,550

 
$
2,477

 
$
(2
)
 
$
2,475

Midwest
1,856

 
21

 
1,877

 
2,002

 
(1
)
 
2,001

New England
362

 
(72
)
 
290

 
156

 
(14
)
 
142

New York(b)
289

 
24

 
313

 
14

 
(31
)
 
(17
)
ERCOT
457

 
(207
)
 
250

 
477

 
(120
)
 
357

Other Regions(c)
465

 
(216
)
 
249

 
238

 
(91
)
 
147

Total Revenues net of purchased power and fuel expense for Reportable Segments
6,039

 
(510
)
 
5,529

 
5,364

 
(259
)
 
5,105

Other(d)
(519
)
 
510

 
(9
)
 
200

 
259

 
459

Total Generation Revenues net of purchased power and fuel expense
$
5,520

 
$
—

 
$
5,520

 
$
5,564

 
$
—

 
$
5,564

 __________
(a)
Includes purchases and sales from third parties and affiliated sales to ComEd, PECO and BGE.
(b)
Amounts include activity recorded at CENG from April 1, 2014, the date of integration, through September 30, 2014.
(c)
Other regions include the South, West and Canada, which are not considered individually significant.
(d)
Other represents activities not allocated to a region. See text above for a description of included activities. Also includes amortization of intangible assets related to commodity contracts recorded at fair value at the date of merger with Constellation and the consolidation of CENG in purchase accounting of $78 million decrease to RNF and $386 million decrease to RNF for the nine months ended September 30, 2014 and 2013, respectively, and the elimination of intersegment revenues.