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Changes in Accumulated Other Comprehensive Income (Tables)
 6 Months Ended
Jun. 30, 2015
Changes in Accumulated Other Comprehensive Income [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following tables present changes in accumulated other comprehensive income (loss) (AOCI) by component for the six months ended June 30, 2015 and 2014:
 
Six Months Ended June 30, 2015
 
Gains 
and
(Losses) 
on Hedging
Activity
 
Unrealized
Gains and
(Losses) on
Marketable
Securities
 
Pension and
Non-Pension
Postretirement
Benefit Plan
Items
 
Foreign
Currency
Items
 
AOCI of
Equity
Investments
 
Total
Exelon(a)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
(28
)
 
$
3

 
$
(2,640
)
 
$
(19
)
 
$
—

 
$
(2,684
)
OCI before reclassifications
 
(10
)
 
—

 
(29
)
 
(9
)
 
—

 
(48
)
Amounts reclassified from AOCI(b)
 
19

 
—

 
87

 
—

 
—

 
106

Net current-period OCI
 
9

 
—

 
58

 
(9
)
 
—

 
58

Ending balance
 
$
(19
)
 
$
3

 
$
(2,582
)
 
$
(28
)
 
$
—

 
$
(2,626
)
Generation(a)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
(18
)
 
$
1

 
$
—

 
$
(19
)
 
$
—

 
$
(36
)
OCI before reclassifications
 
(6
)
 
1

 
—

 
(9
)
 
—

 
(14
)
Amounts reclassified from AOCI(b)
 
3

 
—

 
—

 
—

 
—

 
3

Net current-period OCI
 
(3
)
 
1

 
—

 
(9
)
 
—

 
(11
)
Ending balance
 
$
(21
)
 
$
2

 
$
—

 
$
(28
)
 
$
—

 
$
(47
)
PECO(a)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
—

 
$
1

 
$
—

 
$
—

 
$
—

 
$
1

OCI before reclassifications
 
—

 
—

 
—

 
—

 
—

 
—

Amounts reclassified from AOCI(b)
 
—

 
—

 
—

 
—

 
—

 
—

Net current-period OCI
 
—

 
—

 
—

 
—

 
—

 
—

Ending balance
 
$
—

 
$
1

 
$
—

 
$
—

 
$
—

 
$
1

______________ 
(a)
All amounts are net of tax. Amounts in parentheses represent a decrease in accumulated other comprehensive income.
(b)
See tables following changes in accumulated other comprehensive income tables for details about these reclassifications.

Six Months Ended June 30, 2014
 
Gains 
and
(Losses) 
on Hedging
Activity
 
Unrealized
Gains and
(Losses) on
Marketable
Securities
 
Pension and
Non-Pension
Postretirement
Benefit Plan
Items
 
Foreign
Currency
Items
 
AOCI of
Equity
Investments
 
Total
Exelon(a)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
120

 
$
2

 
$
(2,260
)
 
$
(10
)
 
$
108

 
$
(2,040
)
OCI before reclassifications
 
(11
)
 
1

 
246

 
(1
)
 
11

 
246

Amounts reclassified from AOCI(b)
 
(62
)
 
—

 
66

 
—

 
(116
)
 
(112
)
Net current-period OCI
 
(73
)
 
1

 
312

 
(1
)
 
(105
)
 
134

Ending balance
 
$
47

 
$
3

 
$
(1,948
)
 
$
(11
)
 
$
3

 
$
(1,906
)
Generation(a)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
114

 
$
2

 
$
—

 
$
(10
)
 
$
108

 
$
214

OCI before reclassifications
 
(8
)
 
(1
)
 
—

 
(1
)
 
11

 
1

Amounts reclassified from AOCI(b)
 
(62
)
 
—

 
—

 
—

 
(116
)
 
(178
)
Net current-period OCI
 
(70
)
 
(1
)
 
—

 
(1
)
 
(105
)
 
(177
)
Ending balance
 
$
44

 
$
1

 
$
—

 
$
(11
)
 
$
3

 
$
37

PECO(a)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
—

 
$
1

 
$
—

 
$
—

 
$
—

 
$
1

OCI before reclassifications
 
—

 
—

 
—

 
—

 
—

 
—

Amounts reclassified from AOCI(b)
 
—

 
—

 
—

 
—

 
—

 
—

Net current-period OCI
 
—

 
—

 
—

 
—

 
—

 
—

Ending balance
 
$
—

 
$
1

 
$
—

 
$
—

 
$
—

 
$
1

 _______________
(a)
All amounts are net of tax. Amounts in parentheses represent a decrease in accumulated other comprehensive income.
(b)
See tables following changes in accumulated other comprehensive income tables for details about these reclassifications.
Reclassification out of Accumulated Other Comprehensive Income
The following tables present amounts reclassified out of AOCI to Net income for Exelon and Generation during the three and six months ended June 30, 2015 and 2014.

Three Months Ended June 30, 2015
Details about AOCI components
 
Items reclassified out of AOCI(a)
 
Affected line item in the Statements of Operations and Comprehensive Income
 
 
Exelon
 
Generation
 
 
Gains (losses) on hedging activity
 
 
 
 
 
 
Other cash flow hedges
 
$
(2
)
 
$
(2
)
 
Interest expense
 
 
(2
)
 
(2
)
 
Total before tax
 
 
—

 
—

 
Tax benefit
 
 
$
(2
)
 
$
(2
)
 
Net of tax
Amortization of pension and other postretirement benefit plan items
 
 
 
 
 
 
Prior service costs (b)
 
$
19

 
$
—

 
 
Actuarial losses (b)
 
(90
)
 
—

 
 
 
 
(71
)
 
—

 
Total before tax
 
 
27

 
—

 
Tax benefit
 
 
$
(44
)
 
$
—

 
Net of tax
 
 
 
 
 
 
 
Total Reclassifications for the period
 
$
(46
)
 
$
(2
)
 
Net of Tax

Six Months Ended June 30, 2015
Details about AOCI components
 
Items reclassified out of AOCI(a)
 
Affected line item in the Statements of Operations and Comprehensive Income
 
 
Exelon
 
Generation
 
 
Gains (losses) on hedging activity
 
 
 
 
 
 
Terminated interest rate swaps (c)
 
$
(26
)
 
$
—

 
Other, net
Energy related hedges
 
2

 
2

 
Operating revenues
Other cash flow hedges
 
(5
)
 
(5
)
 
Interest expense
 
 
(29
)
 
(3
)
 
Total before tax
 
 
10

 
—

 
Tax benefit
 
 
$
(19
)
 
$
(3
)
 
Net of tax
Amortization of pension and other postretirement benefit plan items
 
 
 
 
 
 
Prior service costs (b)
 
$
38

 
$
—

 
 
Actuarial losses (b)
 
(180
)
 
—

 
 
 
 
(142
)
 
—

 
Total before tax
 
 
55

 
—

 
Tax benefit
 
 
$
(87
)
 
$
—

 
Net of tax
 
 
 
 
 
 
 
Total Reclassifications for the period
 
$
(106
)
 
$
(3
)
 
Net of Tax

Three months ended June 30, 2014
Details about AOCI components
 
Items reclassified out of AOCI(a)
 
Affected line item in the Statements of Operations and Comprehensive Income
 
 
Exelon
 
Generation
 
 
Gains on hedging activity
 
 
 
 
 
 
Energy related hedges
 
$
63

 
$
63

 
Operating revenues
 
 
63

 
63

 
Total before tax
 
 
(25
)
 
(25
)
 
Tax (expense)
 
 
$
38

 
$
38

 
Net of tax
Amortization of pension and other postretirement benefit plan items
 
 
 
 
 
 
Prior service costs (b)
 
$
12

 
$
—

 
 
Actuarial losses (b)
 
(61
)
 
—

 
 
 
 
(49
)
 
—

 
Total before tax
 
 
18

 
—

 
Tax benefit
 
 
$
(31
)
 
$
—

 
Net of tax
Equity investments
 
 
 
 
 
 
Reversal of CENG equity method AOCI
 
$
193

 
$
193

 
Gain on consolidation of CENG
 
 
193

 
193

 
Total before tax
 
 
(77
)
 
(77
)
 
Tax benefit
 
 
$
116

 
$
116

 
Net of tax
 
 
 
 
 
 
 
Total reclassifications for the period
 
$
123

 
$
154

 
Net of Tax

Six Months Ended June 30, 2014
Details about AOCI components
 
Items reclassified out of AOCI(a)
 
Affected line item in the Statements of Operations and Comprehensive Income
 
 
Exelon
 
Generation
 
 
Gains on hedging activity
 
 
 
 
 
 
Energy related hedges
 
$
102

 
$
102

 
Operating revenues
 
 
102

 
102

 
Total before tax
 
 
(40
)
 
(40
)
 
Tax (expense)
 
 
$
62

 
$
62

 
Net of tax
Amortization of pension and other postretirement benefit plan items
 
 
 
 
 
 
Prior service costs (b)
 
$
10

 
$
—

 
 
Actuarial losses (b)
 
(117
)
 
—

 
 
 
 
(107
)
 
—

 
Total before tax
 
 
41

 
—

 
Tax benefit
 
 
$
(66
)
 
$
—

 
Net of tax
Equity investments
 
 
 
 
 
 
Reversal of CENG equity method AOCI
 
$
193

 
$
193

 
Gain on consolidation of CENG
 
 
193

 
193

 
Total before tax
 
 
(77
)
 
(77
)
 
Tax benefit
 
 
$
116

 
$
116

 
Net of tax
 
 
 
 
 
 
 
Total reclassifications for the period
 
$
112

 
$
178

 
Net of Tax
____________
(a)
All amounts are net of tax. Amounts in parentheses represent a decrease in net income.
(b)
This accumulated other comprehensive income component is included in the computation of net periodic pension and OPEB cost (see Note 14— Retirement Benefits for additional details).
(c)
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.
Schedule Of Other Comprehensive Income Loss Tax
The following table presents income tax expense (benefit) allocated to each component of other comprehensive income (loss) during the three and six months ended June 30, 2015 and 2014:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
Exelon
 
 
 
 
 
 
 
Pension and non-pension postretirement benefit plans:
 
 
 
 
 
 
 
Prior service benefit reclassified to periodic benefit cost
$
8

 
$
5

 
$
15

 
$
5

Actuarial loss reclassified to periodic cost
(35
)
 
(23
)
 
(69
)
 
(46
)
Pension and non-pension postretirement benefit plans valuation adjustment
—

 
(166
)
 
17

 
(159
)
Change in unrealized (gain) loss on cash flow hedges
(2
)
 
28

 
(6
)
 
48

Change in unrealized income on equity investments
—

 
77

 
—

 
70

Change in unrealized loss on marketable securities
1

 
—

 
1

 
—

Total
$
(28
)
 
$
(79
)
 
$
(42
)
 
$
(82
)
 
 
 
 
 
 
 
 
Generation
 
 
 
 
 
 
 
Change in unrealized (gain) loss on cash flow hedges
$
(1
)
 
$
25

 
$
1

 
$
44

Change in unrealized income on equity investments
—

 
77

 
—

 
70

Change in marketable securities
—

 
—

 
1

 
(2
)
Total
$
(1
)
 
$
102

 
$
2

 
$
112