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Supplemental Financial Information (Tables)
 3 Months Ended
Mar. 31, 2015
Supplemental Financial Information [Abstract]  
Components of non-operating income and expenses
The following tables provide additional information about the Registrants’ Consolidated Statements of Operations and Comprehensive Income for the three months ended March 31, 2015 and 2014:
 
 
Three Months Ended March 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
 
Other, Net
 
 
 
 
 
 
 
 
 
 
Decommissioning-related activities:
 
 
 
 
 
 
 
 
 
 
Net realized income on decommissioning trust funds(a)
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
$
71

 
$
71

 
$
—

 
$
—

 
$
—

 
Non-regulatory agreement units
29

 
29

 
—

 
—

 
—

 
Net unrealized gains on decommissioning trust funds
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
48

 
48

 
—

 
—

 
—

 
Non-regulatory agreement units
40

 
40

 
—

 
—

 
—

 
Net unrealized gains on pledged assets
 
 
 
 
 
 
 
 
 
 
Zion Station decommissioning
10

 
10

 
—

 
—

 
—

 
Regulatory offset to decommissioning trust fund-related
      activities(b)
(106
)
 
(106
)
 
—

 
—

 
—

 
Total decommissioning-related activities
92

 
92

 
—

 
—

 
—

 
Investment income (expense)
1

 
1

 
—

 
—

 
1

(c) 
Long-term lease income
4

 
—

 
—

 
—

 
—

 
Interest income related to uncertain income tax positions
—

 
1

 
—

 
—

 
—

 
AFUDC — Equity
5

 
—

 
—

 
2

 
3

 
Terminated interest rate swaps (d)
(23
)
 
3

 
—

 
—

 
—

 
Other
1

 
(3
)
 
3

 
—

 
—

 
Other, net
$
80

 
$
94

 
$
3

 
$
2

 
$
4

 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
Three Months Ended March 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
 
Other, Net
 
 
 
 
 
 
 
 
 
 
Decommissioning-related activities:
 
 
 
 
 
 
 
 
 
 
Net realized income on decommissioning trust funds(a)
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
$
43

 
$
43

 
$
—

 
$
—

 
$
—

 
Non-regulatory agreement units
25

 
25

 
—

 
—

 
—

 
Net unrealized gains on decommissioning trust funds
 
 
 
 
 
 
 
 
 
 
Regulatory agreement units
61

 
61

 
—

 
—

 
—

 
Non-regulatory agreement units
13

 
13

 
—

 
—

 
—

 
Net unrealized losses on pledged assets
 
 
 
 
 
 
 
 
 
 
Zion Station decommissioning
10

 
10

 
—

 
—

 
—

 
Regulatory offset to decommissioning trust fund-related
       activities(b)
(94
)
 
(94
)
 
—

 
—

 
—

 
Total decommissioning-related activities
58

 
58

 
—

 
—

 
—

 
Investment income (expense)
1

 
1

 
—

 
—

 
2

(c)  
Long-term lease income
6

 
—

 
—

 
—

 
—

 
Interest income related to uncertain income tax positions
10

 
14

 
—

 
—

 
—

 
AFUDC — Equity
6

 
—

 
3

 
1

 
3

 
Other
17

 
12

 
2

 
1

 
(1
)
 
Other, net
$
98

 
$
85

 
$
5

 
$
2

 
$
4

 
________
(a)
Includes investment income and realized gains and losses on sales of investments of the 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 15 — Asset Retirement Obligations of the Exelon 2014 Form 10-K for additional information regarding the accounting for nuclear decommissioning.
(c)
Relates to the cash return on BGE’s rate stabilization deferral. See Note 3 — Regulatory Matters of the Exelon 2014 Form 10-K 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.
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 three months ended March 31, 2015 and 2014:
 
Three Months Ended March 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Depreciation, amortization, accretion and depletion
 
 
 
 
 
 
 
 
 
Property, plant and equipment
$
540

 
$
242

 
$
154

 
$
58

 
$
71

Regulatory assets
58

 
—

 
21

 
4

 
35

Amortization of intangible assets, net
12

 
12

 
—

 
—

 
—

Amortization of energy contract assets and liabilities(a)
(31
)
 
(32
)
 
—

 
—

 
—

Nuclear fuel(b)
272

 
272

 
—

 
—

 
—

ARO accretion(c)
97

 
97

 
—

 
—

 
—

Total depreciation, amortization, accretion and depletion
$
948

 
$
591

 
$
175

 
$
62

 
$
106

 
Three Months Ended March 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Depreciation, amortization, accretion and depletion
 
 
 
 
 
 
 
 
 
Property, plant and equipment
$
481

 
$
200

 
$
143

 
$
56

 
$
70

Regulatory assets
72

 
—

 
30

 
2

 
38

Amortization of intangible assets, net
11

 
11

 
—

 
—

 
—

Amortization of energy contract assets and liabilities(a)
42

 
44

 
—

 
—

 
—

Nuclear fuel(b)
234

 
234

 
—

 
—

 
—

ARO accretion(c)
68

 
68

 
—

 
—

 
—

Total depreciation, amortization, accretion and depletion
$
908

 
$
557

 
$
173

 
$
58

 
$
108

_________
(a)
Included in Operating revenues or Purchased power and fuel expense 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.
Three Months Ended March 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Other non-cash operating activities:
 
 
 
 
 
 
 
 
 
Pension and non-pension postretirement benefit costs
$
159

 
$
67

 
$
52

 
$
10

 
$
16

Provision for uncollectible accounts
84

 
4

 
22

 
33

 
25

Stock-based compensation costs
39

 
—

 
—

 
—

 
—

Other decommissioning-related activity(a)
(44
)
 
(44
)
 
—

 
—

 
—

Energy-related options(b)
9

 
9

 
—

 
—

 
—

Amortization of regulatory asset related to debt costs
3

 
—

 
2

 
1

 
—

Amortization of rate stabilization deferral
25

 
—

 
—

 
—

 
25

Amortization of debt fair value adjustment
(9
)
 
(4
)
 
—

 
—

 
—

Discrete impacts of EIMA(c)
46

 
—

 
46

 
—

 
—

Amortization of debt costs
18

 
4

 
1

 
1

 
1

Lower of cost or market inventory adjustment
10

 
10

 
—

 
—

 
—

Other
4

 
(1
)
 
3

 
(1
)
 
(3
)
Total other non-cash operating activities
$
344

 
$
45

 
$
126

 
$
44

 
$
64

Changes in other assets and liabilities:
 
 
 
 
 
 
 
 
 
Under/over-recovered energy and transmission costs
$
65

 
$
—

 
$
—

 
$
26

 
$
39

Other regulatory assets and liabilities
92

 
—

 
2

 
(5
)
 
25

Cash deposits(d)
226

 
226

 
—

 
—

 
—

Other current assets
(155
)
 
(100
)
 
(1
)
 
(95
)
(e) 
30

Other noncurrent assets and liabilities
(113
)
 
(41
)
 
(10
)
 
2

 
(1
)
Total changes in other assets and liabilities
$
115

 
$
85

 
$
(9
)
 
$
(72
)
 
$
93

Non-cash investing and financing activities:
 
 
 
 
 
 
 
 
 
Indemnification of like-kind exchange position(f)
—

 
—

 
2

 
—

 
—

Total non-cash investing and financing activities:
$
—

 
$
—

 
$
2

 
$
—

 
$
—
Cash Flow Supplemental Disclosures
Three Months Ended March 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Other non-cash operating activities:
 
 
 
 
 
 
 
 
 
Pension and non-pension postretirement benefit costs
$
159

 
$
67

 
$
52

 
$
10

 
$
16

Provision for uncollectible accounts
84

 
4

 
22

 
33

 
25

Stock-based compensation costs
39

 
—

 
—

 
—

 
—

Other decommissioning-related activity(a)
(44
)
 
(44
)
 
—

 
—

 
—

Energy-related options(b)
9

 
9

 
—

 
—

 
—

Amortization of regulatory asset related to debt costs
3

 
—

 
2

 
1

 
—

Amortization of rate stabilization deferral
25

 
—

 
—

 
—

 
25

Amortization of debt fair value adjustment
(9
)
 
(4
)
 
—

 
—

 
—

Discrete impacts of EIMA(c)
46

 
—

 
46

 
—

 
—

Amortization of debt costs
18

 
4

 
1

 
1

 
1

Lower of cost or market inventory adjustment
10

 
10

 
—

 
—

 
—

Other
4

 
(1
)
 
3

 
(1
)
 
(3
)
Total other non-cash operating activities
$
344

 
$
45

 
$
126

 
$
44

 
$
64

Changes in other assets and liabilities:
 
 
 
 
 
 
 
 
 
Under/over-recovered energy and transmission costs
$
65

 
$
—

 
$
—

 
$
26

 
$
39

Other regulatory assets and liabilities
92

 
—

 
2

 
(5
)
 
25

Cash deposits(d)
226

 
226

 
—

 
—

 
—

Other current assets
(155
)
 
(100
)
 
(1
)
 
(95
)
(e) 
30

Other noncurrent assets and liabilities
(113
)
 
(41
)
 
(10
)
 
2

 
(1
)
Total changes in other assets and liabilities
$
115

 
$
85

 
$
(9
)
 
$
(72
)
 
$
93

Non-cash investing and financing activities:
 
 
 
 
 
 
 
 
 
Indemnification of like-kind exchange position(f)
—

 
—

 
2

 
—

 
—

Total non-cash investing and financing activities:
$
—

 
$
—

 
$
2

 
$
—

 
$
—


 
Three Months Ended March 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Other non-cash operating activities:
 
 
 
 
 
 
 
 
 
Pension and non-pension postretirement benefit costs
$
173

 
$
75

 
$
56

 
$
12

 
$
16

Equity method investments
19

 
19

 
—

 
—

 
—

Provision for uncollectible accounts
35

 
1

 
(11
)
 
35

 
11

Stock-based compensation costs
46

 
—

 
—

 
—

 
—

Other decommissioning-related activity(a)
(35
)
 
(35
)
 
—

 
—

 
—

Energy-related options(b)
31

 
31

 
—

 
—

 
—

Amortization of regulatory asset related to debt costs
3

 
—

 
2

 
1

 
—

Amortization of rate stabilization deferral
20

 
—

 
—

 
—

 
20

Amortization of debt fair value adjustment
(12
)
 
(5
)
 
—

 
—

 
—

Discrete impacts from EIMA(c)
(4
)
 
—

 
(4
)
 
—

 
—

Amortization of debt costs
5

 
3

 
(5
)
 
1

 
—

Increase in inventory reserve
2

 
2

 
—

 
—

 
—

Other
(7
)
 
(2
)
 
(2
)
 
—

 
(4
)
Total other non-cash operating activities
$
276

 
$
89

 
$
36

 
$
49

 
$
43

Changes in other assets and liabilities:
 
 
 
 
 
 
 
 
 
Under/over-recovered energy and transmission costs
$
(15
)
 
$
—

 
$
4

 
$
(17
)
 
$
23

Other regulatory assets and liabilities
(4
)
 
—

 
(10
)
 
(3
)
 
6

Other current assets
(209
)
 
(80
)
 
(29
)
 
(105
)
(e) 
18

Other noncurrent assets and liabilities
(50
)
 
(23
)
 
11

 
(2
)
 
(3
)
Total changes in other assets and liabilities
$
(278
)
 
$
(103
)
 
$
(24
)
 
$
(127
)
 
$
44

Non-cash investing and financing activities:
 
 
 
 
 
 
 
 
 
Indemnification of like-kind exchange position(f)
—

 
—

 
2

 
—

 
—

       Total non-cash investing and financing activities
$
—

 
$
—

 
$
2

 
$
—

 
$
—

 ____________
(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 15 — Asset Retirement Obligations of the Exelon 2014 Form 10-K 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 5 — Regulatory Matters for more information.
(d)
Relates primarily to cash deposits recalled from ISOs/RTOs and replaced with letters of credit.
(e)
Relates primarily to prepaid utility taxes.
(f)
See Note 10 — Income Taxes for discussion of the like-kind exchange tax position.
Supplemental Balance Sheet Disclosures
The following tables provide additional information about assets and liabilities of the Registrants as of March 31, 2015 and December 31, 2014.
 
March 31, 2015
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Property, plant and equipment:
 
 
 
 
 
 
 
 
 
Accumulated depreciation and amortization
$
15,207

(a) 
$
7,905

(a)  
$
3,247

 
$
2,989

 
$
2,905

Accounts receivable:
 
 
 
 
 
 
 
 
 
Allowance for uncollectible accounts
$
365

 
$
61

 
$
100

 
$
127

 
$
84

December 31, 2014
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
Property, plant and equipment:
 
 
 
 
 
 
 
 
 
Accumulated depreciation and amortization
$
14,742

(b) 
$
7,612

(b)  
$
3,432

 
$
2,917

 
$
2,868

Accounts receivable:
 
 
 
 
 
 
 
 
 
Allowance for uncollectible accounts
$
311

 
$
60

 
$
84

 
$
100

 
$
67

_______
(a)
Includes accumulated amortization of nuclear fuel in the reactor core of $2,772 million.
(b)
Includes accumulated amortization of nuclear fuel in the reactor core of $2,673 million.