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Changes in Accumulated Other Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2016
Equity [Abstract]  
Schedule Of Accumulated Other Comprehensive Income (Loss)
The following tables present changes in accumulated other comprehensive income (loss) (AOCI) by component for the years ended December 31, 2016 and 2015:
 
For the Year Ended December 31, 2016
Gains and
(Losses) on
Cash Flow
Hedges

Unrealized
Gains on
Marketable
Securities

Pension and
Non-Pension
Postretirement
Benefit Plan
Items

Gains and (Losses) on Foreign
Currency
Items

AOCI of
Equity
Investments

Total
Exelon(a)











Beginning balance
$
(19
)
 
$
3

 
$
(2,565
)
 
$
(40
)
 
$
(3
)
 
$
(2,624
)
OCI before reclassifications
(6
)
 
1

 
(182
)
 
5

 
(4
)
 
(186
)
Amounts reclassified from AOCI(b)
8

 
—

 
137

 
5

 
—

 
150

Net current-period OCI
2


1


(45
)

10


(4
)

(36
)
Ending balance
$
(17
)

$
4


$
(2,610
)

$
(30
)

$
(7
)

$
(2,660
)
Generation(a)









 

Beginning balance
$
(21
)
 
$
1

 
$
—

 
$
(40
)
 
$
(3
)
 
$
(63
)
OCI before reclassifications
(6
)
 
1

 
—

 
5

 
(4
)
 
(4
)
Amounts reclassified from AOCI(b)
8

 
—

 
—

 
5

 
—

 
13

Net current-period OCI
2


1


—


10


(4
)

9

Ending balance
$
(19
)

$
2


$
—


$
(30
)

$
(7
)

$
(54
)
PECO(a)









 

Beginning balance
$
—

 
$
1

 
$
—

 
$
—

 
$
—

 
$
1

OCI before reclassifications
—

 
—

 
—

 
—

 
—

 
—

Amounts reclassified from AOCI(b)
—

 
—

 
—

 
—

 
—

 
—

Net current-period OCI
—


—


—


—


—


—

Ending balance
$
—


$
1


$
—


$
—


$
—


$
1

PHI Predecessor(a)
 
 
 
 
 
 
 
 
 
 
 
Beginning balance January 1, 2016
$
(8
)
 
$
—

 
$
(28
)
 
$
—

 
$
—

 
$
(36
)
OCI before reclassifications
—

 
—

 
—

 
—

 
—

 
—

Amounts reclassified from AOCI(b)
—

 
—

 
1

 
—

 
—

 
1

Net current-period OCI
—

 
—

 
1

 
—

 
—

 
1

Ending balance March 23, 2016(c)
$
(8
)
 
$
—

 
$
(27
)
 
$
—

 
$
—

 
$
(35
)

For the Year Ended December 31, 2015
Gains and
(Losses) on
Cash Flow
Hedges
 
Unrealized
Gains on
Marketable
Securities
 
Pension and
Non-Pension
Postretirement
Benefit Plan
items
 
Gains and (Losses) on Foreign
Currency
Items
 
AOCI of
Equity
Investments
 
Total
Exelon(a)
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
$
(28
)

$
3


$
(2,640
)

$
(19
)

$
—

 
$
(2,684
)
OCI before reclassifications
(12
)

—


(100
)

(21
)

(3
)
 
(136
)
Amounts reclassified from AOCI(b)
21


—


175


—


—

 
196

Net current-period OCI
9


—


75


(21
)

(3
)

60

Ending balance
$
(19
)

$
3


$
(2,565
)

$
(40
)

$
(3
)

$
(2,624
)
Generation(a)









 

Beginning balance
$
(18
)

$
1


$
—


$
(19
)

$
—

 
(36
)
OCI before reclassifications
(8
)

—


—


(21
)

(3
)
 
(32
)
Amounts reclassified from AOCI(b)
5


—


—


—


—

 
5

Net current-period OCI
(3
)

—


—


(21
)

(3
)

(27
)
Ending balance
$
(21
)

$
1


$
—


$
(40
)

$
(3
)

$
(63
)
PECO(a)









 

Beginning balance
$
—


$
1


$
—


$
—


$
—

 
$
1

OCI before reclassifications
—


—


—


—


—

 
—

Amounts reclassified from AOCI(b)
—


—


—


—


—

 
—

Net current-period OCI
—


—


—


—


—


—

Ending balance
$
—


$
1


$
—


$
—


$
—


$
1

PHI Predecessor(a)
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
$
(9
)
 
$
—

 
$
(37
)
 
$
—

 
$
—

 
$
(46
)
OCI before reclassifications
—

 
—

 
5

 
—

 
—

 
5

Amounts reclassified from AOCI(b)
1

 
—

 
4

 
—

 
—

 
5

Net current-period OCI
1

 
—

 
9

 
—

 
—

 
10

Ending balance
$
(8
)
 
$
—

 
$
(28
)
 
$
—

 
$
—

 
$
(36
)
_______________________ 
(a)
All amounts are net of tax and noncontrolling interests. Amounts in parenthesis represent a decrease in accumulated other comprehensive income.
(b)
See next 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, Generation and PHI during the years ended December 31, 2016 and 2015:
 
For the Year Ended December 31, 2016
Details about AOCI components
 
Items reclassified out of AOCI(a)
 
Affected line item in the Statements of Operations and Comprehensive Income
 
 
 
 
 
 
Predecessor
 
 
 
 
 
 
 
 
January 1, 2016 to March 23, 2016
 
 
  
 
Exelon
 
Generation
 
PHI
 
 
Gains and (losses) on cash flow hedges
 
 
 
 
 
 
 
 
Other cash flow hedges
 
$
(13
)
 
$
(13
)
 
$
—

 
Interest expense
Total before tax
 
(13
)

(13
)
 
—

 
 
Tax benefit
 
5

 
5

 
—

 
 
Net of tax
 
$
(8
)

$
(8
)
 
$
—

 
Comprehensive income
 
 
 
 
 
 
 
 
 
Amortization of pension and other
postretirement benefit plan items
Prior service costs(b)
 
$
78

 
$
—

 
$
—

 
 
Actuarial losses(b)
 
(302
)
 
—

 
(1
)
 
 
Total before tax
 
(224
)

—

 
(1
)
 
 
Tax benefit
 
87

 
—

 
—

 
 
Net of tax
 
$
(137
)

$
—

 
$
(1
)
 
 
 
 
 
 
 
 
 
 
 
Gains and (losses) of FX
 
 
 
 
 
 
 
 
Gains
 
$
(5
)
 
$
(5
)
 
$
—

 
 
Other
 
—

 
—

 
—

 
 
Total before tax
 
(5
)
 
(5
)
 
—

 
 
Tax benefit
 
—

 
—

 
—

 
 
Net of tax
 
$
(5
)
 
$
(5
)
 
$
—

 
 
 
 
 
 
 
 
 
 
 
Total Reclassifications
 
$
(150
)

$
(13
)
 
$
(1
)
 
Comprehensive income

For the Year Ended December 31, 2015
Details about AOCI components
 
Items reclassified out of AOCI(a)
 
Affected line item in the Statements of Operations and Comprehensive Income
 
 
 
 
 
 
Predecessor
 
 
  
 
Exelon
 
Generation
 
PHI
 
 
Gains and (losses) on cash flow hedges
 
 
 
 
 
 
 
 
Terminated interest rate swaps
 
$
(26
)
 
$
—

 
$
—

 
Other, net
Energy related hedges
 
2

 
2

 
—

 
Operating revenues
Other cash flow hedges
 
(11
)
 
(11
)
 
(1
)
 
Interest expense
Total before tax
 
(35
)

(9
)

(1
)
 
 
Tax benefit
 
14

 
4

 
—

 
 
Net of tax
 
$
(21
)

$
(5
)

$
(1
)
 
Comprehensive income
 
 
 
 
 
 
 
 
 
Amortization of pension and other postretirement benefit plan items
 
 
 
 
 
 
 
 
Prior service costs(b)
 
$
74

 
$
—

 
$
—

 
 
Actuarial losses(b)
 
(361
)
 
—

 
(6
)
 
 
Total before tax
 
(287
)

—


(6
)
 
 
Tax benefit
 
112

 
—

 
2

 
 
Net of tax
 
$
(175
)

$
—


$
(4
)
 
 
 
 
 
 
 
 
 
 
 
Total Reclassifications
 
$
(196
)

$
(5
)

$
(5
)
 
Comprehensive income
_____________________
(a)
Amounts in parenthesis 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 17 — Retirement Benefits for additional details).
(c)
Amortization of the deferred compensation unit plan is allocated to capital and operating and maintenance expense.
Schedule of Components of Income Tax Expense (Benefit)
The following table presents income tax expense (benefit) allocated to each component of other comprehensive income (loss) during the years ended December 31, 2016 and 2015:
 
For the Years Ended December 31,
 
2016
 
2015
 
2014
Exelon
 
 
 
 
 
Pension and non-pension postretirement benefit plans:
 
 
 
 
 
Prior service benefit reclassified to periodic benefit cost
$
30

 
$
30

 
$
19

Actuarial loss reclassified to periodic cost
(118
)
 
(140
)
 
(93
)
Pension and non-pension postretirement benefit plan valuation adjustment
115

 
62

 
317

Change in unrealized (gain) loss on cash flow hedges
—

 
(6
)
 
96

Change in unrealized (gain) loss on equity investments
3

 
1

 
73

Total
$
30

 
$
(53
)

$
412

 
 
 
 
 
 
Generation
 
 
 
 
 
Change in unrealized loss on cash flow hedges
$
(2
)
 
$
2

 
$
84

Change in unrealized (gain) loss on equity investments
3

 
1

 
73

Total
$
1

 
$
3


$
157

 
Predecessor
 
January 1 to
March 23,
 
For the Years Ended
December 31,
PHI
2016
 
2015
 
2014
Pension and non-pension postretirement benefit plans:
 
 
 
 
 
Actuarial loss reclassified to periodic cost
$
—

 
$
6

 
$
5