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Segment Information (All Registrants)
 6 Months Ended
Jun. 30, 2017
Segment Reporting [Abstract]  
Segment Information (All Registrants)
Segment Information (All Registrants)
Operating segments for each of the Registrants are determined based on information used by the chief operating decision maker(s) (CODM) in deciding how to evaluate performance and allocate resources at each of the Registrants.
In the first quarter of 2016, following the consummation of the PHI Merger, three new reportable segments were added: Pepco, DPL and ACE. As a result, Exelon has twelve reportable segments, which include ComEd, PECO, BGE, PHI's three reportable segments consisting of Pepco, DPL, and ACE, and Generation’s six reportable segments consisting of the Mid-Atlantic, Midwest, New England, New York, ERCOT and all other power regions referred to collectively as “Other Power Regions”, which includes activities in the South, West and Canada. ComEd, PECO, BGE, Pepco, DPL and ACE each represent a single reportable segment, and as such, no separate segment information is provided for these Registrants. Exelon, ComEd, PECO, BGE, Pepco, DPL and ACE's CODMs evaluate the performance of and allocate resources to ComEd, PECO, BGE, Pepco, DPL and ACE based on net income and return on equity.
Effective with the consummation of the PHI Merger, PHI's reportable segments have changed based on the information used by the CODM to evaluate performance and allocate resources. PHI's reportable segments consist of Pepco, DPL and ACE. PHI's Predecessor periods' segment information has been recast to conform to the current presentation. The reclassification of the segment information did not impact PHI's reported consolidated revenues or net income. PHI's CODM evaluates the performance of and allocates resources to Pepco, DPL and ACE based on net income and return on equity.
The basis for Generation's reportable segments is the integrated management of its electricity business that is located in different geographic regions, and largely representative of the footprints of ISO/RTO and/or NERC regions, which utilize multiple supply sources to provide electricity through various distribution channels (wholesale and retail). Generation's hedging strategies and risk metrics are also aligned to these same geographic regions. Descriptions of each of Generation’s six reportable segments are as follows:
•
Mid-Atlantic represents operations in the eastern half of PJM, which includes New Jersey, Maryland, Virginia, West Virginia, Delaware, the District of Columbia and parts of Pennsylvania and North Carolina.
•
Midwest represents operations in the western half of PJM, which includes portions of Illinois, Pennsylvania, Indiana, Ohio, Michigan, Kentucky and Tennessee, and the United States footprint of MISO, excluding MISO’s Southern Region, which covers all or most of North Dakota, South Dakota, Nebraska, Minnesota, Iowa, Wisconsin, the remaining parts of Illinois, Indiana, Michigan and Ohio not covered by PJM, and parts of Montana, Missouri and Kentucky.
•
New England represents the operations within ISO-NE covering the states of Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont.
•
New York represents operations within ISO-NY, which covers the state of New York in its entirety.
•
ERCOT represents operations within Electric Reliability Council of Texas, covering most of the state of Texas.
•
Other Power Regions:
•
South represents operations in the FRCC, MISO’s Southern Region, and the remaining portions of the SERC not included within MISO or PJM, which includes all or most of Florida, Arkansas, Louisiana, Mississippi, Alabama, Georgia, Tennessee, North Carolina, South Carolina and parts of Missouri, Kentucky and Texas. Generation’s South region also includes operations in the SPP, covering Kansas, Oklahoma, most of Nebraska and parts of New Mexico, Texas, Louisiana, Missouri, Mississippi and Arkansas.
•
West represents operations in the WECC, which includes California ISO, and covers the states of California, Oregon, Washington, Arizona, Nevada, Utah, Idaho, Colorado and parts of New Mexico, Wyoming and South Dakota.
•
Canada represents operations across the entire country of Canada and includes AESO, OIESO and the Canadian portion of MISO.
The CODMs for Exelon and Generation evaluate the performance of Generation’s electric business activities and allocate resources based on revenues net of purchased power and fuel expense (RNF). Generation believes that RNF is a useful measurement of operational performance. RNF is not a presentation defined under GAAP and may not be comparable to other companies’ presentations or deemed more useful than the GAAP information provided elsewhere in this report. Generation’s operating revenues include all sales to third parties and affiliated sales to the Utility Registrants. Purchased power costs include all costs associated with the procurement and supply of electricity including capacity, energy and ancillary services. Fuel expense includes the fuel costs for Generation’s owned generation and fuel costs associated with tolling agreements. The results of Generation's other business activities are not regularly reviewed by the CODM and are therefore not classified as operating segments or included in the regional reportable segment amounts. These activities include natural gas, as well as other miscellaneous business activities that are not significant to Generation's overall operating revenues or results of operations. Further, Generation’s unrealized mark-to-market gains and losses on economic hedging activities and its amortization of certain intangible assets and liabilities relating to commodity contracts recorded at fair value from mergers and acquisitions are also excluded from the regional reportable segment amounts. Exelon and Generation do not use a measure of total assets in making decisions regarding allocating resources to or assessing the performance of these reportable segments.
An analysis and reconciliation of the Registrants’ reportable segment information to the respective information in the consolidated financial statements for the three and six months ended June 30, 2017 and 2016 is as follows:
Three Months Ended June 30, 2017 and 2016
 
 
 
 
 
 
 
 
 
Successor
 
 
 
 
 
 
 
Generation(a)
 
ComEd
 
PECO
 
BGE
 
PHI(b)
 
Other(c)
 
Intersegment
Eliminations
 
Exelon
Operating revenues(d):
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Competitive businesses electric revenues
$
3,719

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
(266
)
 
$
3,453

Competitive businesses natural gas revenues
430

 
—

 
—

 
—

 
—

 
—

 
—

 
430

Competitive businesses other revenues
25

 
—

 
—

 
—

 
—

 
—

 
—

 
25

Rate-regulated electric revenues
—

 
1,357

 
550

 
571

 
1,040

 
—

 
(7
)
 
3,511

Rate-regulated natural gas revenues
—

 
—

 
80

 
103

 
22

 
—

 
(1
)
 
204

Shared service and other revenues
—

 
—

 
—

 
—

 
12

 
449

 
(461
)
 
—

2016
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Competitive businesses electric revenues
$
3,655

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
(354
)
 
$
3,301

Competitive businesses natural gas revenues
367

 
—

 
—

 
—

 
—

 
—

 
—

 
367

Competitive businesses other revenues
(433
)
 
—

 
—

 
—

 
—

 
—

 
(1
)
 
(434
)
Rate-regulated electric revenues
—

 
1,286

 
587

 
584

 
1,030

 
—

 
(7
)
 
3,480

Rate-regulated natural gas revenues
—

 
—

 
77

 
96

 
26

 
—

 
(2
)
 
197

Shared service and other revenues
—

 
—

 
—

 
—

 
10

 
398

 
(409
)
 
(1
)
Intersegment revenues(e):
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017
$
266

 
$
3

 
$
2

 
$
3

 
$
12

 
$
448

 
$
(734
)
 
$
—

2016
355

 
3

 
2

 
4

 
10

 
398

 
(771
)
 
1

Net income (loss):
 
 
 
 
 
 
 
 
 
 
 
 
 
 

2017
$
(266
)
 
$
118

 
$
88

 
$
45

 
$
66

 
$
13

 
$
—

 
$
64

2016
28

 
145

 
100

 
34

 
52

 
(52
)
 
(1
)
 
306

Total assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 

June 30, 2017
$
48,130

 
$
29,160

 
$
11,041

 
$
8,786

 
$
21,190

 
$
10,783

 
$
(11,986
)
 
$
117,104

December 31, 2016
46,974

 
28,335

 
10,831

 
8,704

 
21,025

 
10,369

 
(11,334
)
 
114,904


_________
(a)
Generation includes the six reportable segments shown below: Mid-Atlantic, Midwest, New England, New York, ERCOT and Other Power Regions. Intersegment revenues for Generation for the three months ended June 30, 2017 include revenue from sales to PECO of $34 million, sales to BGE of $99 million, sales to Pepco of $68 million, sales to DPL of $40 million, and sales to ACE of $7 million in the Mid-Atlantic region, and sales to ComEd of $18 million in the Midwest region. For the three months ended June 30, 2016, intersegment revenues for Generation include revenue from sales to PECO of $64 million, sales to BGE of $135 million, sales to Pepco of $88 million, sales to DPL of $43 million, and sales to ACE of $12 million in the Mid-Atlantic region, and sales to ComEd of $13 million in the Midwest region.
(b)
Amounts included represent activity for PHI's successor period, three months ended June 30, 2017 and 2016. PHI includes the three reportable segments: Pepco, DPL and ACE.
(c)
Other primarily includes Exelon’s corporate operations, shared service entities and other financing and investment activities.
(d)
Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses on the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 18 — Supplemental Financial Information for total utility taxes for the three months ended June 30, 2017 and 2016.
(e)
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.
Successor PHI:
 
Pepco
 
DPL
 
ACE
 
Other(b)
 
Intersegment
Eliminations
 
PHI
Operating revenues(a):
Three months ended June 30, 2017 - Successor
 
 
 
 
 
 
 
 
 
 
 
Rate-regulated electric revenues
$
514

 
$
260

 
$
270

 
$
—

 
$
(4
)
 
$
1,040

Rate-regulated natural gas revenues
—

 
22

 
—

 
—

 
—

 
22

Shared service and other revenues
—

 
—

 
—

 
13

 
(1
)
 
12

Three months ended June 30, 2016 - Successor
 
 
 
 
 
 
 
 
 
 
 
Rate-regulated electric revenues
$
509

 
$
255

 
$
270

 
$
—

 
$
(4
)
 
$
1,030

Rate-regulated natural gas revenues
—

 
26

 
—

 
—

 
—

 
26

Shared service and other revenues
—

 
—

 
—

 
10

 
—

 
10

Intersegment revenues:
 
 
 
 
 
 
 
 
 
 
 
Three months ended June 30, 2017 - Successor
$
1

 
$
2

 
$
1

 
$
13

 
$
(5
)
 
$
12

Three months ended June 30, 2016 - Successor
1

 
2

 
1

 
10

 
(4
)
 
10

Net income (loss):
 
 
 
 
 
 
 
 
 
 
 
Three months ended June 30, 2017 - Successor
$
43

 
$
19

 
$
8

 
$
(16
)
 
$
12

 
$
66

Three months ended June 30, 2016 - Successor
49

 
12

 
3

 
(22
)
 
10

 
52

Total assets:
 
 
 
 
 
 
 
 
 
 
 
June 30, 2017 - Successor
$
7,648

 
$
4,235

 
$
3,478

 
$
10,800

 
$
(4,971
)
 
$
21,190

December 31, 2016 - Successor
7,335

 
4,153

 
3,457

 
10,804

 
(4,724
)
 
21,025

_________
(a)
Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses on the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 18 — Supplemental Financial Information for total utility taxes for the three months ended June 30, 2017 and 2016.
(b)
Other primarily includes PHI’s corporate operations, shared service entities and other financing and investment activities.
Generation total revenues:
 
 
 
 
 
 
 
 
 
 
 
 
 
Three Months Ended June 30, 2017
 
Three Months Ended June 30, 2016
 
Revenues
from external
customers(a)

Intersegment
revenues

Total
Revenues

Revenues
from external
customers(a)

Intersegment
revenues

Total
Revenues
Mid-Atlantic
$
1,356

 
$
9

 
$
1,365

 
$
1,432

 
$
(16
)
 
$
1,416

Midwest
1,058

 
(8
)
 
1,050

 
1,076

 
7

 
1,083

New England
438

 
(5
)
 
433

 
352

 
(1
)
 
351

New York
352

 
(5
)
 
347

 
356

 
(10
)
 
346

ERCOT
247

 
—

 
247

 
207

 
—

 
207

Other Power Regions
268

 
(9
)
 
259

 
232

 
(9
)
 
223

Total Revenues for Reportable Segments
3,719

 
(18
)
 
3,701

 
3,655

 
(29
)
 
3,626

Other(b)
455

 
18

 
473

 
(66
)
 
29

 
(37
)
Total Generation Consolidated Operating Revenues
$
4,174

 
$
—

 
$
4,174

 
$
3,589

 
$
—

 
$
3,589

__________
(a)
Includes all wholesale and retail electric sales to third parties and affiliated sales to the Utility Registrants.
(b)
Other represents activities not allocated to a region. See text above for a description of included activities. Includes a $15 million and $9 million decrease to revenues for the amortization of intangible assets and liabilities related to commodity contracts recorded at fair value for the three months ended June 30, 2017 and 2016, respectively, unrealized mark-to-market losses of $143 million and $615 million for the three months ended June 30, 2017 and 2016, respectively, and elimination of intersegment revenues.
Generation total revenues net of purchased power and fuel expense:
 
 
 
 
 
 
 
 
 
 
 
 
 
Three Months Ended June 30, 2017
 
Three Months Ended June 30, 2016
 
RNF
from external
customers(a)
 
Intersegment
RNF
 
Total RNF
 
RNF
from external
customers(a)
 
Intersegment
RNF
 
Total RNF
Mid-Atlantic
$
757

 
$
26

 
$
783

 
$
830

 
$
(2
)
 
$
828

Midwest
728

 
—

 
728

 
724

 
4

 
728

New England
157

 
(10
)
 
147

 
118

 
(8
)
 
110

New York
230

 
—

 
230

 
270

 
(3
)
 
267

ERCOT
121

 
(51
)
 
70

 
111

 
(34
)
 
77

Other Power Regions
134

 
(44
)
 
90

 
123

 
(27
)
 
96

Total Revenues net of purchased power and fuel for Reportable Segments
2,127


(79
)

2,048


2,176


(70
)

2,106

Other(b)
(110
)
 
79

 
(31
)
 
(164
)
 
70

 
(94
)
Total Generation Revenues net of purchased power and fuel expense
$
2,017


$
—


$
2,017


$
2,012


$
—


$
2,012


__________
(a)
Includes purchases and sales from/to third parties and affiliated sales to the Utility Registrants.
(b)
Other represents activities not allocated to a region. See text above for a description of included activities. Includes a $20 million and $12 million decrease to RNF for the amortization of intangible assets and liabilities related to commodity contracts for the three months ended June 30, 2017 and 2016, respectively, unrealized mark-to-market losses of $184 million and $304 million for the three months ended June 30, 2017 and 2016, respectively, and the elimination of intersegment revenue net of purchased power and fuel expense.

Six Months Ended June 30, 2017 and 2016
 
 
 
 
 
 
 
 
 
Successor
 
 
 
 
 
 
 
Generation(a)
 
ComEd
 
PECO
 
BGE
 
PHI(b)
 
Other(c)
 
Intersegment
Eliminations
 
Exelon
Operating revenues(d):
2017
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Competitive businesses electric revenues
$
7,437

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
(592
)
 
$
6,845

Competitive businesses natural gas revenues
1,348

 
—

 
—

 
—

 
—

 
—

 
—

 
1,348

Competitive businesses other revenues
276

 
—

 
—

 
—

 
—

 
—

 
(1
)
 
275

Rate-regulated electric revenues
—

 
2,656

 
1,140

 
1,237

 
2,138

 
1

 
(16
)
 
7,156

Rate-regulated natural gas revenues
—

 
—

 
286

 
388

 
87

 
—

 
(4
)
 
757

Shared service and other revenues
—

 
—

 
—

 
—

 
23

 
870

 
(893
)
 
—

2016
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Competitive businesses electric revenues
$
7,352

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
(620
)
 
$
6,732

Competitive businesses natural gas revenues
1,189

 
—

 
—

 
—

 
—

 
—

 
—

 
1,189

Competitive businesses other revenues
(212
)
 
—

 
—

 
—

 
—

 
—

 
(1
)
 
(213
)
Rate-regulated electric revenues
—

 
2,535

 
1,232

 
1,264

 
1,120

 
—

 
(15
)
 
6,136

Rate-regulated natural gas revenues
—

 
—

 
273

 
345

 
28

 
—

 
(5
)
 
641

Shared service and other revenues
—

 
—

 
—

 
—

 
23

 
803

 
(826
)
 
—

Intersegment revenues(e):
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017
$
594

 
$
9

 
$
3

 
$
8

 
$
23

 
$
866

 
$
(1,503
)
 
$
—

2016
621

 
8

 
4

 
9

 
23

 
803

 
(1,466
)
 
2

Net income (loss):
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017
$
144

 
$
259

 
$
215

 
$
169

 
$
205

 
$
54

 
$
—

 
$
1,046

2016
285

 
260

 
224

 
135

 
(257
)
 
(215
)
 
(2
)
 
430

_________
(a)
Generation includes the six reportable segments shown below: Mid-Atlantic, Midwest, New England, New York, ERCOT and Other Power Regions. Intersegment revenues for Generation for the six months ended June 30, 2017 include revenue from sales to PECO of $79 million, sales to BGE of $233 million, sales to Pepco of $152 million, sales to DPL of $91 million, and sales to ACE of $16 million in the Mid-Atlantic region, and sales to ComEd of $23 million in the Midwest region. For the six months ended June 30, 2016, intersegment revenues for Generation include revenue from sales to PECO of $143 million and sales to BGE of $306 million in the Mid-Atlantic region, and sales to ComEd of $18 million in the Midwest region. For the Successor period of March 24, 2016 to June 30, 2016, intersegment revenues for Generation include revenue from sales to Pepco of $94 million, sales to DPL of $47 million, and sales to ACE of $13 million in the Mid-Atlantic region.
(b)
Amounts included represent activity for PHI's successor period, six months ended June 30, 2017 and March 24, 2016 through June 30, 2016. PHI includes the three reportable segments: Pepco, DPL and ACE. See tables below for PHI's predecessor period, including Pepco, DPL and ACE, for January 1, 2016 to March 23, 2016.
(c)
Other primarily includes Exelon’s corporate operations, shared service entities and other financing and investment activities.
(d)
Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses on the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 18 — Supplemental Financial Information for total utility taxes for the six months ended June 30, 2017 and 2016.
(e)
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.
Successor and Predecessor PHI:
 
Pepco
 
DPL
 
ACE
 
Other(b)
 
Intersegment
Eliminations
 
PHI
Operating revenues(a):
 
 
 
 
 
 
 
 
 
 
 
Six Months Ended June 30, 2017 - Successor
 
 
 
 
 
 
 
 
 
 
 
Rate-regulated electric revenues
$
1,045

 
$
557

 
$
544

 
$
1

 
$
(9
)
 
$
2,138

Rate-regulated natural gas revenues
—

 
87

 
—

 
—

 
—

 
87

Shared service and other revenues
—

 
—

 
—

 
25

 
(2
)
 
23

March 24, 2016 to June 30, 2016 - Successor
 
 
 
 
 
 
 
 
 
 
 
Rate-regulated electric revenues
$
550

 
$
279

 
$
293

 
$
3

 
$
(5
)
 
$
1,120

Rate-regulated natural gas revenues
—

 
29

 
—

 
(1
)
 
—

 
28

Shared service and other revenues
—

 
—

 
—

 
23

 
—

 
23

January 1, 2016 to March 23, 2016 - Predecessor
 
 
 
 
 
 
 
 
 
 
 
Rate-regulated electric revenues
$
511

 
$
279

 
$
268

 
$
42

 
$
(4
)
 
$
1,096

Rate-regulated natural gas revenues
—

 
56

 
—

 
1

 
—

 
57

Shared service and other revenues
—

 
—

 
—

 
—

 
—

 
—

Intersegment revenues:
 
 
 
 
 
 
 
 
 
 
 
Six Months Ended June 30, 2017 - Successor
$
3

 
$
4

 
$
1

 
$
24

 
$
(9
)
 
$
23

March 24, 2016 to June 30, 2016 - Successor
2

 
2

 
1

 
23

 
(5
)
 
23

January 1, 2016 to March 23, 2016 - Predecessor
1

 
2

 
1

 
—

 
(4
)
 
—

Net income (loss):
 
 
 
 
 
 
 
 
 
 
 
Six Months Ended June 30, 2017 - Successor
$
101

 
$
76

 
$
36

 
$
(31
)
 
$
23

 
$
205

March 24, 2016 to June 30, 2016 - Successor
(92
)
 
(86
)
 
(102
)
 
—

 
23

 
(257
)
January 1, 2016 to March 23, 2016 - Predecessor
32

 
26

 
5

 
(44
)
 
—

 
19

_________
(a)
Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses on the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 18 — Supplemental Financial Information for total utility taxes for the six months ended June 30, 2017 and 2016.
(b)
Other primarily includes PHI’s corporate operations, shared service entities and other financing and investment activities.  For the predecessor period presented, Other includes the activity of PHI’s unregulated businesses which were distributed to Exelon and Generation as a result of the PHI Merger. 







Generation total revenues:
 
Six Months Ended June 30, 2017
 
Six Months Ended June 30, 2016
 
Revenues
from external
customers(a)
 
Intersegment
revenues
 
Total
Revenues
 
Revenues
from external
customers(a)
 
Intersegment
revenues
 
Total
Revenues
Mid-Atlantic
$
2,785

 
$
5

 
$
2,790

 
$
2,964

 
$
(28
)
 
$
2,936

Midwest
2,107

 
(5
)
 
2,102

 
2,166

 
13

 
2,179

New England
987

 
(7
)
 
980

 
823

 
(2
)
 
821

New York
662

 
(8
)
 
654

 
573

 
(24
)
 
549

ERCOT
439

 
(1
)
 
438

 
370

 
—

 
370

Other Power Regions
457

 
(14
)
 
443

 
456

 
(9
)
 
447

Total Revenues for Reportable Segments
7,437


(30
)

7,407


7,352


(50
)

7,302

Other(b)
1,624

 
30

 
1,654

 
977

 
50

 
1,027

Total Generation Consolidated Operating Revenues
$
9,061


$
—


$
9,061


$
8,329


$
—


$
8,329

 __________
(a)
Includes all wholesale and retail electric sales to third parties and affiliated sales to the Utility Registrants.
(b)
Other represents activities not allocated to a region. See text above for a description of included activities. Includes a $17 million decrease to revenues and an $11 million increase to revenues for the amortization of intangible assets and liabilities related to commodity contracts recorded at fair value for the six months ended June 30, 2017 and 2016, respectively, unrealized mark-to-market losses of $98 million and $553 million for the six months ended June 30, 2017 and 2016, respectively, and elimination of intersegment revenues.

Generation total revenues net of purchased power and fuel expense:
 
Six Months Ended June 30, 2017
 
Six Months Ended June 30, 2016
 
RNF
from external
customers(a)
 
Intersegment
RNF
 
Total RNF
 
RNF
from external
customers(a)
 
Intersegment
RN
 
Total RNF
Mid-Atlantic
$
1,513

 
$
44

 
$
1,557

 
$
1,661

 
$
8

 
$
1,669

Midwest
1,431

 
12

 
1,443

 
1,443

 
6

 
1,449

New England
271

 
(14
)
 
257

 
204

 
(13
)
 
191

New York
385

 
—

 
385

 
408

 
(13
)
 
395

ERCOT
214

 
(76
)
 
138

 
192

 
(54
)
 
138

Other Power Regions
240

 
(88
)
 
152

 
211

 
(37
)
 
174

Total Revenues net of purchased power and fuel expense for Reportable Segments
4,054


(122
)

3,932


4,119


(103
)

4,016

Other(b)
52

 
122

 
174

 
190

 
103

 
293

Total Generation Revenues net of purchased power and fuel expense
$
4,106


$
—


$
4,106


$
4,309


$
—


$
4,309

__________
(a)
Includes purchases and sales from/to third parties and affiliated sales to the Utility Registrants.
(b)
Other represents activities not allocated to a region. See text above for a description of included activities. Includes a $22 million decrease to RNF and a $7 million increase to RNF for the amortization of intangible assets and liabilities related to commodity contracts for the six months ended June 30, 2017 and 2016, respectively, unrealized mark-to-market losses of $233 million and $201 million for the six months ended June 30, 2017 and 2016, respectively, and the elimination of intersegment revenue net of purchased power and fuel expense.