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Changes in Accumulated Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2017
Changes in Accumulated Other Comprehensive Income [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
three months ended March 31, 2017 and 2016:
Three Months Ended March 31, 2017
Gains 
and
(losses) 
on Cash Flow Hedges
 
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
$
(17
)
 
$
4

 
$
(2,610
)
 
$
(30
)
 
$
(7
)
 
$
(2,660
)
OCI before reclassifications
2

 
1

 
(59
)
 
1

 
5

 
(50
)
Amounts reclassified from AOCI(b)
4

 
—

 
36

 
—

 
—

 
40

Net current-period OCI
6

 
1

 
(23
)
 
1

 
5

 
(10
)
Ending balance
$
(11
)
 
$
5

 
$
(2,633
)
 
$
(29
)
 
$
(2
)
 
$
(2,670
)
Generation(a)
 
 
 
 
 
 
 
 
 
 


Beginning balance
$
(19
)
 
$
2

 
$
—

 
$
(30
)
 
$
(7
)
 
$
(54
)
OCI before reclassifications
2

 
—

 
—

 
1

 
6

 
9

Amounts reclassified from AOCI(b)
4

 
—

 
—

 
—

 
—

 
4

Net current-period OCI
6

 
—

 
—

 
1

 
6

 
13

Ending balance
$
(13
)
 
$
2

 
$
—

 
$
(29
)
 
$
(1
)
 
$
(41
)
PECO(a)
 
 
 
 
 
 
 
 
 
 


Beginning balance
$
—

 
$
1

 
$
—

 
$
—

 
$
—

 
$
1

OCI before reclassifications
—

 
—

 
—

 
—

 
—

 
—

Amounts reclassified from AOCI(b)
—

 
—

 
—

 
—

 
—

 
—

Net current-period OCI
—

 
—

 
—

 
—

 
—

 
—

Ending balance
$
—

 
$
1

 
$
—

 
$
—

 
$
—

 
$
1



Three Months Ended March 31, 2016
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
$
(19
)
 
$
3

 
$
(2,565
)
 
$
(40
)
 
$
(3
)
 
$
(2,624
)
OCI before reclassifications
(10
)
 
(1
)
 
(1
)
 
6

 
(3
)
 
(9
)
Amounts reclassified from AOCI(b)
3

 
—

 
34

 
—

 
—

 
37

Net current-period OCI
(7
)
 
(1
)
 
33

 
6

 
(3
)
 
28

Ending balance
$
(26
)
 
$
2

 
$
(2,532
)
 
$
(34
)
 
$
(6
)
 
$
(2,596
)
Generation(a)
 
 
 
 
 
 
 
 
 
 

Beginning balance
$
(21
)
 
$
1

 
$
—

 
$
(40
)
 
$
(3
)
 
$
(63
)
OCI before reclassifications
(8
)
 
—

 
—

 
6

 
(2
)
 
(4
)
Amounts reclassified from AOCI(b)
3

 
—

 
—

 
—

 
—

 
3

Net current-period OCI
(5
)
 
—

 
—

 
6

 
(2
)
 
(1
)
Ending balance
$
(26
)
 
$
1

 
$
—

 
$
(34
)
 
$
(5
)
 
$
(64
)
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
)
 ________
(a)
All amounts are net of tax and noncontrolling interest. Amounts in parenthesis represent a decrease in AOCI.
(b)
See next tables for details about these reclassifications.
(c)
As a result of the PHI Merger, the PHI predecessor balances at March 23, 2016 were reduced to zero on March 24, 2016 due to purchase accounting adjustments applied to PHI.
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 three months ended March 31, 2017 and 2016.

 
 
 
 
 
 
 

Three Months Ended March 31, 2017
Details about AOCI components
 
Items reclassified out of AOCI(a)
 
Affected line item in the Statement of Operations and Comprehensive Income
 
 
 
 
 
 
 
 
 
Exelon
 
Generation
 
 
Gains and (losses) on cash flow hedges
 
 
 
 
 
 
Other cash flow hedges
 
$
(7
)
 
$
(7
)
 
Interest expense
Total before tax
 
(7
)

(7
)

 
Tax benefit
 
3

 
3

 
 
Net of tax
 
$
(4
)
 
$
(4
)
 
Comprehensive income
 
 
 
 
 
 
 
Amortization of pension and other postretirement benefit plan items
 
 
 
 
 
 
Prior service costs(b)
 
$
23

 
$
—

 
 
Actuarial losses(b)
 
(81
)
 
—

 
 
Total before tax
 
(58
)
 
—

 
 
Tax benefit
 
22

 
—

 
 
Net of tax
 
$
(36
)
 
$
—

 
 
 
 
 
 
 
 
 
Total Reclassifications
 
$
(40
)
 
$
(4
)
 
Comprehensive income
 
 
 
 
 
 
 
 
 

Three Months Ended March 31, 2016
Details about AOCI components
 
Items reclassified out of AOCI(a)
 
Affected line item in the Statement of Operations and Comprehensive Income
 
 
 
 
 
 
Predecessor
 
 
 
 
Exelon
 
Generation
 
PHI
 
 
Gains and (losses) on cash flow hedges
 
 
 
 
 
 
 
 
Other cash flow hedges
 
$
(5
)
 
$
(5
)
 
—

 
Interest expense
Total before tax
 
(5
)

(5
)

—

 
 
Tax expense
 
2

 
2

 
—

 
 
Net of tax
 
$
(3
)
 
$
(3
)
 
$
—

 
Comprehensive income
 
 
 
 
 
 
 
 
 
Amortization of pension and other postretirement benefit plan items
 
 
 
 
 
 
 
 
Prior service costs(b)
 
$
20

 
$
—

 
$
—

 
 
Actuarial losses(b)
 
(76
)
 
—

 
(1
)
 
 
Total before tax
 
(56
)
 
—

 
(1
)
 
 
Tax benefit
 
22

 
—

 
—

 
 
Net of tax
 
$
(34
)
 
$
—

 
$
(1
)
 
 
 
 
 
 
 
 
 
 
 
Total Reclassifications
 
$
(37
)
 
$
(3
)
 
$
(1
)
 
Comprehensive income
_______
(a)
Amounts in parenthesis represent a decrease in net income.
(b)
This AOCI component is included in the computation of net periodic pension and OPEB cost (see Note 13 — Retirement Benefits for additional details).
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 months ended March 31, 2017 and 2016:
 
 
Three Months Ended March 31,
 
2017
 
2016
Exelon
 
 
 
Pension and non-pension postretirement benefit plans:
 
 
 
Prior service benefit reclassified to periodic benefit cost
$
10

 
$
7

Actuarial loss reclassified to periodic benefit cost
(32
)
 
(30
)
Pension and non-pension postretirement benefit plans valuation adjustment
—

 
—

Change in unrealized (loss)/gain on cash flow hedges
(1
)
 
3

Change in unrealized (loss)/gain on equity investments
(4
)
 
2

Change in unrealized (loss)/gain on marketable securities
(1
)
 
1

Total
$
(28
)
 
$
(17
)
 
 
 
 
Generation
 
 
 
Change in unrealized (loss)/gain on cash flow hedges
$
(1
)
 
$
2

Change in unrealized (loss)/gain on equity investments
(3
)
 
2

Total
$
(4
)
 
$
4