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Retirement Benefits (Tables)
 6 Months Ended
Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Schedule of Defined Benefit Plans Disclosures
The following tables present the components of Exelon’s net periodic benefit costs, prior to any capitalization, for the three and six months ended June 30, 2015 and 2014.
 
Pension Benefits
Three Months Ended
June 30,
 
Other Postretirement Benefits
Three Months Ended
June 30,
 
2015(a)
 
2014(a)
 
2015(a)
 
2014(a)
Service cost
$
81

 
$
74

 
$
29

 
$
30

Interest cost
178

 
190

 
42

 
47

Expected return on assets
(256
)
 
(251
)
 
(37
)
 
(38
)
Amortization of:
 
 
 
 
 
 
 
Prior service cost (benefit)
4

 
4

 
(44
)
 
(30
)
Actuarial loss
142

 
104

 
21

 
12

Net periodic benefit cost
$
149

 
$
121

 
$
11

 
$
21

 
 
 
 
 
 
 
 
 
Pension Benefits
Six Months Ended
June 30,
 
Other Postretirement Benefits
Six Months Ended
June 30,
 
2015(a)
 
2014(a)
 
2015(a)
 
2014(a)
Service cost
$
163

 
$
143

 
$
59

 
$
62

Interest cost
355

 
373

 
83

 
103

Expected return on assets
(513
)
 
(492
)
 
(75
)
 
(76
)
Amortization of:
 
 
 
 
 
 
 
Prior service cost (benefit)
7

 
7

 
(88
)
 
(34
)
Actuarial loss
285

 
209

 
41

 
20

Net periodic benefit cost
$
297

 
$
240

 
$
20

 
$
75

______________ 
(a)
For the three months ended June 30, 2015, the cost for pension benefits and other postretirement benefits related to CENG were $3 million and $3 million, respectively. For the six months ended June 30, 2015, the cost for pension benefits and other postretirement benefits related to CENG were $5 million and $6 million, respectively. For the period of April 1, 2014 to June 30, 2014, the cost for pension benefits and other postretirement benefits related to CENG were $2 million and $3 million, respectively. CENG amounts are included in the tables above.
Schedule Of Pension And Other Postretirement Benefit Costs
The amounts below represent Generation’s, ComEd’s, PECO’s, BGE’s and BSC's allocated portion of the pension and postretirement benefit plan costs, which were included in Property, plant and equipment within the respective Consolidated Balance Sheets and Operating and maintenance expense within the Consolidated Statement of Operations and Comprehensive Income during the three and six months ended June 30, 2015 and 2014.
 
Three Months Ended June 30,
 
Six Months Ended June 30,
Pension and Other Postretirement Benefit Costs
2015
 
2014
 
2015
 
2014
Generation(a)
$
68

 
$
63

 
$
133

 
$
139

ComEd
51

 
40

 
103

 
96

PECO
10

 
9

 
19

 
21

BGE
17

 
17

 
33

 
33

BSC(b)
14

 
13

 
29

 
26

______________ 
(a)
For the three and six months ended June 30, 2015, the costs related to CENG were $6 million and $11 million, respectively. For the period of April 1, 2014 to June 30, 2014, amounts include $5 million related to CENG.
(b)
These amounts primarily represent amounts billed to Exelon’s subsidiaries through intercompany allocations. These amounts are not included in the Generation, ComEd, PECO or BGE amounts above.
Schedule Of Defined Contributions
The following table presents the matching contributions to the savings plans during the three and six months ended June 30, 2015 and 2014:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
Savings Plan Matching Contributions
 
2015
 
2014
 
2015
 
2014
Exelon(a)
 
$
38

 
$
19

 
$
60

 
$
48

Generation(a)
 
20

 
10

 
33

 
24

ComEd
 
8

 
5

 
13

 
12

PECO
 
3

 
2

 
4

 
4

BGE
 
3

 
1

 
5

 
4

BSC(b)
 
4

 
1

 
5

 
4

_______________ 
(a)
Includes $3 million and $4 million, respectively, related to CENG for the three and six months ended June 30, 2015. For the period of April 1, 2014 to June 30, 2014, amounts include $1 million related to CENG.
(b)
These amounts primarily represent amounts billed to Exelon’s subsidiaries through intercompany allocations. These costs are not included in the Generation, ComEd, PECO or BGE amounts above.