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Supplemental Financial Information (Tables)
12 Months Ended
Dec. 31, 2015
Supplemental Financial Information [Abstract]  
Components of taxes other than income
The following tables provide additional information about the Registrants’ Consolidated Statements of Operations and Comprehensive Income for the years ended December 31, 2015, 2014 and 2013.
 
For the year ended December 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Taxes other than income
 
 
 
 
 
 
 
 
 
Utility (a)
$
474

 
$
105

 
$
236

 
$
133

 
$
85

Property
407

 
250

 
27

 
11

 
119

Payroll
201

 
118

 
28

 
14

 
16

Other
118

 
16

 
5

 
2

 
4

Total taxes other than income
$
1,200

 
$
489

 
296

 
$
160

 
$
224

 
For the year ended December 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Taxes other than income
 
 
 
 
 
 
 
 
 
Utility (a)
$
456

 
$
89

 
$
238

 
$
128

 
$
86

Property
396

 
240

 
25

 
15

 
114

Payroll
200

 
118

 
28

 
14

 
18

Other
102

 
18

 
2

 
2

 
3

Total taxes other than income
$
1,154

 
$
465

 
$
293

 
$
159

 
$
221


For the year ended December 31, 2013
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Taxes other than income
 
 
 
 
 
 
 
 
 
Utility (a)
$
449

 
$
79

 
$
241

 
$
129

 
$
82

Property
302

 
205

 
24

 
14

 
112

Payroll
159

 
89

 
27

 
13

 
15

Other
185

 
16

 
7

 
2

 
4

Total taxes other than income
$
1,095

 
$
389

 
$
299

 
$
158

 
$
213

_____________________ 
(a)
Generation’s utility tax represents gross receipts tax related to its retail operations and ComEd’s, PECO’s and BGE’s utility taxes represent municipal and state utility taxes and gross receipts taxes related to their operating revenues. The offsetting collection of utility taxes from customers is recorded in revenues on the Registrants’ Consolidated Statements of Operations and Comprehensive Income.
Components of non-operating income and expenses
For the year ended December 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
 
Other, Net
 
 
 
 
 
 
 
 
 
 
Decommissioning-related activities:
 
 
 
 
 
 
 
 
 
 
Net realized income on decommissioning
trust funds (a)
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
$
232

 
$
232

 
$

 
$

 
$

 
Non-regulatory agreement units
156

 
156

 

 

 

 
Net unrealized losses on decommissioning
trust funds—
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
(282
)
 
(282
)
 

 

 

 
Non-regulatory agreement units
(197
)
 
(197
)
 

 

 

 
Net unrealized gains on pledged assets—
 
 
 
 
 
 
 
 
 
 
Zion Station decommissioning
7

 
7

 

 

 

 
Regulatory offset to decommissioning trust
fund-related activities (b)
21

 
21

 

 

 

 
Total decommissioning-related activities
(63
)

(63
)






 
Investment income (loss)
8

 
3

 

 
(2
)
 
4

(c) 
Long-term lease income
15

 

 

 

 

 
Interest income related to uncertain income tax
positions
1

 
1







 
AFUDC—Equity
24

 

 
5

 
5

 
14

 
Terminated interest rate swaps (d)
(26
)
 

 

 

 

 
PHI merger related debt exchange (e)
(22
)
 

 

 

 

 
Other
17

 
(1
)
 
16

 
2

 

 
Other, net
$
(46
)

$
(60
)

$
21


$
5


$
18

 
 
For the year ended December 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
 
Other, Net
 
 
 
 
 
 
 
 
 
 
Decommissioning-related activities:
 
 
 
 
 
 
 
 
 
 
Net realized income on decommissioning trust
funds (a)
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
$
216

 
$
216

 
$

 
$

 
$

 
Non-regulatory agreement units
159

 
159

 

 

 

 
Net unrealized gains on decommissioning trust
funds—
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
180

 
180

 

 

 

 
Non-regulatory agreement units
134

 
134

 

 

 

 
Net unrealized gains on pledged assets—
 
 
 
 
 
 
 
 
 
 
Zion Station decommissioning
29

 
29

 

 

 

 
Regulatory offset to decommissioning trust
fund-related activities (b)
(358
)
 
(358
)
 

 


 


 
Total decommissioning-related activities
360


360







 
Investment income
1

 
1

 

 
(1
)
 
7

(c) 
Long-term lease income
24

 

 

 

 

 
Interest income related to uncertain income tax
positions
40


54







 
AFUDC—Equity
21

 

 
3

 
6

 
12

 
Other
9

 
(9
)
 
14

 
2

 
(1
)
 
Other, net
$
455


$
406


$
17


$
7


$
18

 
 
 
For the year ended December 31, 2013
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
 
Other, Net
 
 
 
 
 
 
 
 
 
 
Decommissioning-related activities:
 
 
 
 
 
 
 
 
 
 
Net realized income on decommissioning
trust funds (a)
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
$
256

 
$
256

 
$

 
$

 
$

 
Non-regulatory agreement units
77

 
77

 

 

 

 
Net unrealized gains on decommissioning
trust funds—
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
406

 
406

 

 

 

 
Non-regulatory agreement units
146

 
146

 

 

 

 
Net unrealized gains on pledged assets—
 
 
 
 
 
 
 
 
 
 
Zion Station decommissioning
7

 
7

 

 

 

 
Regulatory offset to decommissioning trust
fund-related activities (b)
(546
)
 
(546
)
 

 


 

 
Total decommissioning-related activities
346


346







 
Investment income
8

 
(1
)
 

 
(1
)
 
9

(c) 
Long-term lease income
28

 

 

 

 

 
Interest income related to uncertain income tax
positions
24

 
4

 

 

 

 
AFUDC—Equity
22

 

 
11

 
4

 
7

 
Other
32

 
6

 
15

 
3

 
1

 
Other, net
$
460


$
355


$
26


$
6


$
17

 
_________________________
(a)
Includes investment income and realized gains and losses on sales of investments within the nuclear decommissioning trust funds.
(b)
Includes the elimination of NDT fund activity for the Regulatory Agreement Units, including the elimination of net income taxes related to all NDT fund activity for those units. See Note 16Asset Retirement Obligations for additional information regarding the accounting for nuclear decommissioning.
(c)
Relates to the cash return on BGE’s rate stabilization deferral. See Note 3Regulatory Matters for additional information regarding the rate stabilization deferral.
(d)
In January 2015, in connection with Generation's $750 million issuance of five-year Senior Unsecured Notes, Exelon terminated certain floating-to-fixed interest rate swaps. As the original forecasted transactions were a series of future interest payments over a ten year period, a portion of the anticipated interest payments are probable not to occur. As a result, $26 million of anticipated payments were reclassified from Accumulated OCI to Other, net in Exelon's Consolidated Statement of Operations and Comprehensive Income.
(e)
See Note 14Debt and Credit Agreements and 4Mergers, Acquisitions, and Dispositions for additional information on the PHI merger related debt exchange.

Components of depreciation, amortization and accretion, and other, net
The following tables provide additional information regarding the Registrants’ Consolidated Statements of Cash Flows for the years ended December 31, 2015, 2014 and 2013.
 
For the year ended December 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Depreciation, amortization, accretion and
depletion
 
 
 
 
 
 
 
 
 
Property, plant and equipment
$
2,227

 
$
1,007

 
$
635

 
$
240

 
$
289

Regulatory assets
170

 

 
72

 
20

 
77

Amortization of intangible assets, net
54

 
47

 

 

 

Amortization of energy contract assets and
liabilities (a)
22

 
22

 

 

 

Nuclear fuel (b)
1,116

 
1,116

 

 

 

ARO accretion (c)
398

 
397

 

 

 

Total depreciation, amortization, accretion and
depletion
$
3,987

 
$
2,589

 
$
707


$
260

 
$
366

 
For the year ended December 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Depreciation, amortization, accretion and
depletion
 
 
 
 
 
 
 
 
 
Property, plant and equipment
$
2,080

 
$
922

 
$
588

 
$
227

 
$
288

Regulatory assets
191

 

 
99

 
9

 
83

Amortization of intangible assets, net
44

 
44

 

 

 

Amortization of energy contract assets and
liabilities (a)
135

 
135

 

 

 

Nuclear fuel (b)
1,073

 
1,073

 

 

 

ARO accretion (c)
345

 
345

 

 

 

Total depreciation, amortization, accretion and
depletion
$
3,868


$
2,519


$
687


$
236


$
371

 
For the year ended December 31, 2013
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Depreciation, amortization, accretion and
depletion
 
 
 
 
 
 
 
 
 
Property, plant and equipment
$
1,893

 
$
813

 
$
545

 
$
219

 
$
264

Regulatory assets
212

 

 
119

 
9

 
84

Amortization of intangible assets, net
48

 
43

 
5

 

 

Amortization of energy contract assets and
liabilities (a)
430

 
507

 

 

 

Nuclear fuel (b)
921

 
921

 

 

 

ARO accretion (c)
275

 
275

 

 

 

Total depreciation, amortization and accretion
$
3,779

 
$
2,559


$
669


$
228


$
348

________________________
(a)
Included in Operating revenues or Purchased power and fuel on the Registrants’ Consolidated Statements of Operations and Comprehensive Income.
(b)
Included in Purchased power and fuel expense on the Registrants’ Consolidated Statements of Operations and Comprehensive Income.
(c)
Included in Operating and maintenance expense on the Registrants’ Consolidated Statements of Operations and Comprehensive Income.

Schedule of Cash Flow, Supplemental Disclosure
For the year ended December 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Cash paid (refunded) during the year:
 
 
 
 
 
 
 
 
 
Interest (net of amount capitalized)
$
930

 
$
348

 
$
308

 
$
94

 
$
120

Income taxes (net of refunds)
342

 
476

 
(265
)
 
64

 
73


Other non-cash operating activities:
 
 
 
 
 
 
 
 
 
Pension and non-pension postretirement benefit
costs
$
637

 
$
269

 
$
206

 
$
39

 
$
65

Loss from equity method investments
7

 
8

 

 

 

Provision for uncollectible accounts
120

 
22

 
53

 
30

 
15

Provision for excess and obsolete inventory
10

 
9

 
1

 

 

Stock-based compensation costs
97

 

 

 

 

Other decommissioning-related activity (a)
(82
)
 
(82
)
 

 

 

Energy-related options (b)
21

 
21

 

 

 

Amortization of regulatory asset related to debt
costs
7

 

 
5

 
2

 

Amortization of rate stabilization deferral
73

 

 

 

 
73

Amortization of debt fair value adjustment
(17
)
 
(17
)
 

 

 

Amortization of debt costs
58

 
15

 
4

 
2

 
2

Discrete impacts from EIMA (c)
144

 

 
144

 

 

Lower of cost or market inventory adjustment
23

 
23

 

 

 

Other
11

 

 
3

 
(3
)
 
(18
)
Total other non-cash operating activities
$
1,109


$
268


$
416


$
70


$
137

Non-cash investing and financing activities:
 
 
 
 
 
 
 
 
 
Change in PPE related to ARO update
$
885

 
$
885

 
$

 
$

 
$

Change in capital expenditures not paid
96

 
82

 
34

 
(13
)
 
(9
)
Non-cash financing of capital projects
77

 
77

 

 

 

Nuclear fuel procurement (d)
57

 
57

 

 

 

Indemnification of like-kind exchange position (e)

 

 
7

 

 

Long-term software licensing agreement (f)
95

 

 

 

 

____________________________
(a)
Includes the elimination of NDT fund activity for the Regulatory Agreement Units, including the elimination of operating revenues, ARO accretion, ARC amortization, investment income and income taxes related to all NDT fund activity for these units. See Note 16Asset Retirement Obligations for additional information regarding the accounting for nuclear decommissioning.
(b)
Includes option premiums reclassified to realized at the settlement of the underlying contracts and recorded to results of operations.
(c)
Reflects the change in distribution rates pursuant to EIMA, which allows for the recovery of costs by a utility through a pre-established performance-based formula rate tariff. See Note 3Regulatory Matters for more information.
(d)
Relates to the nuclear fuel procurement contract for the purchase of fixed quantities of converted uranium, which was delivered to Generation in 2015. Generation is required to make payments starting September 28, 2018, with the final payment being due no later than September 30, 2020.
(e)
See Note 15Income Taxes for discussion of the like-kind exchange tax position.
(f)
Relates to a long-term software license agreement entered into on May 30, 2015. Exelon is required to make payments starting August of 2015 through May of 2024. See Note 14Debt and Credit Agreements for additional information.
For the year ended December 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Cash paid (refunded) during the year:
 
 
 
 
 
 
 
 
 
Interest (net of amount capitalized)
$
940

 
$
322

 
$
292

 
$
94

 
$
111

Income taxes (net of refunds)
314

 
227

 
(6
)
 
85

 
(21
)

Other non-cash operating activities:
 
 
 
 
 
 
 
 
 
Pension and non-pension postretirement benefit costs
$
560

 
$
249

 
$
162

 
$
36

 
$
64

Loss from equity method investments
22

 
20

 

 

 

Provision for uncollectible accounts
156

 
14

 
26

 
52

 
64

Provision for excess and obsolete inventory
5

 
5

 

 

 

Stock-based compensation costs
91

 

 

 

 

Other decommissioning-related activity (a)
(132
)
 
(132
)
 

 

 

Energy-related options (b)
122

 
122

 

 

 

Amortization of regulatory asset related to debt
costs
11

 

 
8

 
3

 

Amortization of rate stabilization deferral
65

 

 

 

 
65

Amortization of debt fair value adjustment
(23
)
 
(23
)
 

 

 

Merger-related commitments
44

 
44

 

 

 

Amortization of debt costs
53

 
12

 
4

 
2

 
2

Discrete impacts from EIMA (c)
53

 

 
53

 

 

Lower of cost or market inventory adjustment
29

 
29

 

 

 

Other
(2
)
 
6

 
2

 
(1
)
 
(15
)
Total other non-cash operating activities
$
1,054


$
346


$
255


$
92


$
180

Non-cash investing and financing activities:
 
 
 
 
 
 
 
 
 
Change in PPE related to ARO update
$
72

 
$
72

 
$

 
$

 
$

Change in capital expenditures not paid
220

 
(61
)
(d) 
78

 

 
25

Fair value of net assets recorded upon CENG
consolidation (e)
3,400

 
3,400

 

 

 

Issuance of equity units (f)
131

 

 

 

 

Nuclear fuel procurement (g)
70

 
70

 

 

 

Indemnification of like-kind exchange position (h)


 

 
5

 

 

 ______________________ 
(a)
Includes the elimination of NDT fund activity for the Regulatory Agreement Units, including the elimination of operating revenues, ARO accretion, ARC amortization, investment income and income taxes related to all NDT fund activity for these units. See Note 16Asset Retirement Obligations for additional information regarding the accounting for nuclear decommissioning.
(b)
Includes option premiums reclassified to realized at the settlement of the underlying contracts and recorded to results of operations.
(c)
Reflects the change in distribution rates pursuant to EIMA, which allows for the recovery of costs by a utility through a pre-established performance-based formula rate tariff. See Note 3Regulatory Matters for more information.
(d)
Includes $170 million of changes in capital expenditures not paid between December 31, 2014 and 2013 related to Antelope Valley.
(e)
See Note 5Investment in Constellation Energy Nuclear Group, LLC for additional information.
(f)
Relates to the present value of the contract payments for the equity units issued by Exelon. See Note 20Stock-Based Compensation Plans for additional information.
(g)
Relates to the nuclear fuel procurement contracts for the purchase of fixed quantities of uranium, which was delivered to Generation in 2014. Generation is required to make payments starting June 30, 2016, with the final payment being due no later than June 30, 2018.
(h)
See Note 15Income Taxes for discussion of the like-kind exchange tax position.

For the year ended December 31, 2013
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Cash paid (refunded) during the year:
 
 
 
 
 
 
 
 
 
Interest (net of amount capitalized)
$
866

 
$
291

 
$
283

 
$
95

 
$
130

Income taxes (net of refunds)
112

 
(18
)
 
33

 
70

 
42


Other non-cash operating activities:
 
 
 
 
 
 
 
 
 
Pension and non-pension postretirement benefit costs
$
825

 
$
345

 
$
308

 
$
43

 
$
56

Gain from equity method investments
(10
)
 
(10
)
 

 

 

Provision for uncollectible accounts
101

 
10

 
(15
)
 
61

 
44

Provision for excess and obsolete inventory
9

 
9

 

 

 

Stock-based compensation costs
120

 

 

 

 

Other decommissioning-related activity (a)
(169
)
 
(169
)
 

 

 

Energy-related options (b)
104

 
104

 

 

 

Amortization of regulatory asset related to debt costs
12

 

 
9

 
3

 

Amortization of rate stabilization deferral
66

 

 

 

 
66

Amortization of debt fair value adjustment
(34
)
 
(34
)
 

 

 

Discrete impacts from EIMA (c)
(271
)
 

 
(271
)
 

 

Amortization of debt costs
18

 
10

 
1

 
2

 
2

Other
(53
)
 
5

 
(4
)
 
(1
)
 
(15
)
Total other non-cash operating activities
$
718


$
270


$
28


$
108


$
153

Non-cash investing and financing activities:
 
 
 
 
 
 
 
 
 
Change in PPE related to ARO update
$
(128
)
 
$
(128
)
 
$

 
$

 
$
4

Change in capital expenditures not paid
(38
)
 
(107
)
(d) 
(8
)
 
13

 
(48
)
Consolidated VIE dividend to noncontrolling interest
63

 
63

 

 

 

Indemnification of like-kind exchange position (e)

 

 
176

 

 

 _________________________ 
(a)
Includes the elimination of NDT fund activity for the Regulatory Agreement Units, including the elimination of operating revenues, ARO accretion, ARC amortization, investment income and income taxes related to all NDT fund activity for these units. See Note 16Asset Retirement Obligations for additional information regarding the accounting for nuclear decommissioning.
(b)
Includes option premiums reclassified to realized at the settlement of the underlying contracts and recorded to results of operations.
(c)
Reflects the change in distribution rates pursuant to EIMA, which allows for the recovery of costs by a utility through pre-established performance-based formula rate tariff. See Note 3Regulatory Matters.
(d)
Includes $55 million of changes in capital expenditures not paid between December 31, 2013 and 2012 related to Antelope Valley.
(e)
See Note 15Income Taxes for discussion of the like-kind exchanged tax position.

Investments
The following tables provide additional information about assets and liabilities of the Registrants at December 31, 2015 and 2014.
 
December 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Investments
 
 
 
 
 
 
 
 
 
Equity method investments:
 
 
 
 
 
 
 
 
 
      Financing trusts (a)
$
22

 
$

 
$
6

 
$
8

 
$
8

Bloom
63

 
63

 

 

 

Net Power
23

 
23

 

 

 

Other equity method investments
4

 
3

 

 

 

Total equity method investments
112


89


6


8


8

Other investments:
 
 
 
 
 
 
 
 
 
Net investment in leases (b)
358

 
6

 

 

 

       Employee benefit trusts and investments (c)
85

 
31

 

 
20

 
4

Other cost method investments
55

 
55

 

 

 

Other available for sale investments
29

 
29

 

 

 

Total investments
$
639


$
210


$
6


$
28


$
12

 
December 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Investments
 
 
 
 
 
 
 
 
 
Equity method investments:
 
 
 
 
 
 
 
 
 
Financing trusts (a)
$
22

 
$

 
$
6

 
$
8

 
$
8

Bloom
13

 
13

 

 

 

Net Power
9

 
9

 

 

 

Sunnyside
5

 
5

 

 

 

Other equity method investments
1

 
1

 

 

 

Total equity method investments
50


28


6


8


8

Other investments:

 

 


 


 


Net investment in leases (b)
367

 
7

 

 

 

Employee benefit trusts and investments (c)
85

 
27

 

 
23

 
4

Other cost method investments
37

 
37

 

 

 

Other available for sale investments
5

 
5

 

 

 

Total investments
$
544


$
104


$
6


$
31


$
12

_________________________
(a)
Includes investments in affiliated financing trusts, which were not consolidated within the financial statements of Exelon and are shown as investments on the Consolidated Balance Sheets. See Note 1Significant Accounting Policies for additional information.
(b)
Represents direct financing lease investments. See Note 8Impairment of Long-Lived Assets for additional information.
(c)
The Registrants’ investments in these marketable securities are recorded at fair market value.

Accrued Liabilities Current
The following tables provide additional information about liabilities of the Registrants at December 31, 2015 and 2014.
 
December 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Accrued expenses
  
 
 
 
 
 
Compensation-related accruals (a)
$
1,014

 
$
547

 
$
183

 
$
66

 
$
57

Taxes accrued
293

 
186

 
63

 
4

 
23

Interest accrued
915

 
77

 
443

 
35

 
27

Severance accrued
21

 
11

 
3

 

 
1

Other accrued expenses
133

 
114


14

 
4

 
2

Total accrued expenses
$
2,376

 
$
935

 
$
706

 
$
109

 
$
110

 
 
 
 
 
 
 
 
 
 
December 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Accrued expenses
 
 
 
 
 
 
 
 
 
Compensation-related accruals (a)
$
832

 
$
447

 
$
153

 
$
50

 
$
58

Taxes accrued
305

 
248

 
59

 
3

 
42

Interest accrued
240

 
66

 
102

 
33

 
29

Severance accrued
49

 
33

 
2

 
1

 
2

Other accrued expenses
113

(b)  
92

(b) 
15

 
4

 

Total accrued expenses
$
1,539

 
$
886

 
$
331

 
$
91

 
$
131

_______________________ 
(a)
Primarily includes accrued payroll, bonuses and other incentives, vacation and benefits.
(b)
Includes $19 million for amounts accrued related to Antelope Valley as of December 31, 2014.